Commit 1bdcdbd996
Changed files (55)
test
cases
run_translated_c
translate_c
src
test/cases/run_translated_c/compound_assignments_with_implicit_casts.c
@@ -1,20 +0,0 @@
-int main() {
- int i = 2;
- float f = 3.2f;
-
- i += 1.7;
- if (i != 3) return 1;
- i += f;
- if (i != 6) return 2;
-
-
- f += 2UL;
- if (f <= 5.1999 || f >= 5.2001) return 3;
- f += i;
- if (f <= 11.1999 || f >= 11.2001) return 4;
-
- return 0;
-}
-
-// run-translated-c
-// c_frontend=clang
test/cases/run_translated_c/compound_assignments_with_pointer_arithmetic.c
@@ -1,21 +0,0 @@
-int main() {
- const char *s = "forgreatjustice";
- unsigned int add = 1;
-
- s += add;
- if (*s != 'o') return 1;
-
- s += 1UL;
- if (*s != 'r') return 2;
-
- const char *s2 = (s += add);
- if (*s2 != 'g') return 3;
-
- s2 -= add;
- if (*s2 != 'r') return 4;
-
- return 0;
-}
-
-// run-translated-c
-// c_frontend=clang
test/cases/run_translated_c/dereference address of.c
@@ -1,11 +0,0 @@
-#include <stdlib.h>
-int main(void) {
- int i = 0;
- *&i = 42;
- if (i != 42) abort();
- return 0;
-}
-
-// run-translated-c
-// c_frontend=clang
-// link_libc=true
test/cases/run_translated_c/explicit_cast_bool_from_float.c
@@ -1,10 +0,0 @@
-#include <stdbool.h>
-
-int main() {
- float f = 2.0f;
- bool b = (bool) f;
- return 0;
-}
-
-// run-translated-c
-// c_frontend=clang
test/cases/run_translated_c/extern_typedef_variables_in_functions.c
@@ -1,22 +0,0 @@
-const int ev = 40;
-
-static int func(void)
-{
- typedef int test_type_t;
- extern const test_type_t ev;
- // Ensure mangled name is also being used for conditions and loops, see #20828
- if (ev == 0);
- while (ev == 0);
- do; while (ev == 0);
- return ev + 2;
-}
-
-int main()
-{
- if (func() != 42)
- return 1;
- return 0;
-}
-
-// run-translated-c
-// c_frontend=clang
test/cases/run_translated_c/float_from_bool_expr_cast.c
@@ -1,8 +0,0 @@
-int main() {
- float f = (float)(10.0f > 1.0f);
- return 0;
-}
-
-// run-translated-c
-// c_frontend=clang
-//
test/cases/run_translated_c/sub_scope_extern_local_var_ref.c
@@ -1,23 +0,0 @@
-#include <stdlib.h>
-int a = 42;
-int foo(int bar) {
- extern int a;
- if (bar) {
- return a;
- }
- return 0;
-}
-int main() {
- int result1 = foo(0);
- if (result1 != 0) abort();
- int result2 = foo(1);
- if (result2 != 42) abort();
- a = 100;
- int result3 = foo(1);
- if (result3 != 100) abort();
- return 0;
-}
-
-// run-translated-c
-// c_frontend=clang
-// link_libc=true
test/cases/translate_c/_Static_assert.c
@@ -1,7 +0,0 @@
-_Static_assert(1 == 1, "");
-
-// translate-c
-// target=x86_64-linux
-// c_frontend=aro
-//
-// tmp.c:1:1: warning: ignoring _Static_assert declaration
test/cases/translate_c/align() attribute.c
@@ -1,17 +0,0 @@
-__attribute__ ((aligned(128)))
-extern char my_array[16];
-__attribute__ ((aligned(128)))
-void my_fn(void) { }
-void other_fn(void) {
- char ARR[16] __attribute__ ((aligned (16)));
-}
-
-// translate-c
-// c_frontend=clang
-//
-// pub extern var my_array: [16]u8 align(128);
-// pub export fn my_fn() align(128) void {}
-// pub export fn other_fn() void {
-// var ARR: [16]u8 align(16) = undefined;
-// _ = &ARR;
-// }
test/cases/translate_c/assert_with_strlit.c
@@ -1,8 +0,0 @@
-
-void assert(int x) {}
-#define FOO assert(0 && "error message")
-
-// translate-c
-// c_frontend=clang
-//
-// pub const FOO = assert((@as(c_int, 0) != 0) and (@intFromPtr("error message") != 0));
test/cases/translate_c/atomic types.c
@@ -1,8 +0,0 @@
-typedef _Atomic(int) AtomicInt;
-
-// translate-c
-// target=x86_64-linux
-// c_frontend=aro
-//
-// tmp.c:1:22: warning: unsupported type: '_Atomic(int)'
-// pub const AtomicInt = @compileError("unable to resolve typedef child type");
test/cases/translate_c/c_keywords_as_macro_function_parameters.c
@@ -1,82 +0,0 @@
-#define GUARDED_INT_ADDITION(int) ((int) + 1)
-
-#define UNGUARDED_INT_SUBTRACTION(int) (int - 2)
-
-#define GUARDED_INT_MULTIPLY(int) ((int) * 3)
-
-#define UNGUARDED_INT_DIVIDE(int) (int / 4)
-
-#define WRAPPED_RETURN(return) ((return) % 2)
-
-#define UNWRAPPED_RETURN(return) (return ^ 0x7F)
-
-#define WITH_TWO_PARAMETERS(signed, x) ((signed) + (x) + 9)
-
-#define GUARDED_ALIGNOF(_Alignof) ((_Alignof) & 0x55)
-
-#define UNGUARDED_ALIGNOF(_Alignof) (_Alignof | 0x80)
-
-#define GUARDED_SIZEOF(sizeof) ((sizeof) == 64)
-
-#define UNGUARDED_SIZEOF(sizeof) (sizeof < 64)
-
-#define SIZEOF(x) ((int)sizeof(x))
-
-#define SIZEOF2(x) ((int)sizeof x)
-
-// translate-c
-// c_frontend=clang
-//
-// pub inline fn GUARDED_INT_ADDITION(int: anytype) @TypeOf(int + @as(c_int, 1)) {
-// _ = ∫
-// return int + @as(c_int, 1);
-// }
-// pub inline fn UNGUARDED_INT_SUBTRACTION(int: anytype) @TypeOf(int - @as(c_int, 2)) {
-// _ = ∫
-// return int - @as(c_int, 2);
-// }
-// pub inline fn GUARDED_INT_MULTIPLY(int: anytype) @TypeOf(int * @as(c_int, 3)) {
-// _ = ∫
-// return int * @as(c_int, 3);
-// }
-// pub inline fn UNGUARDED_INT_DIVIDE(int: anytype) @TypeOf(@import("std").zig.c_translation.MacroArithmetic.div(int, @as(c_int, 4))) {
-// _ = ∫
-// return @import("std").zig.c_translation.MacroArithmetic.div(int, @as(c_int, 4));
-// }
-// pub inline fn WRAPPED_RETURN(@"return": anytype) @TypeOf(@import("std").zig.c_translation.MacroArithmetic.rem(@"return", @as(c_int, 2))) {
-// _ = &@"return";
-// return @import("std").zig.c_translation.MacroArithmetic.rem(@"return", @as(c_int, 2));
-// }
-// pub inline fn UNWRAPPED_RETURN(@"return": anytype) @TypeOf(@"return" ^ @as(c_int, 0x7F)) {
-// _ = &@"return";
-// return @"return" ^ @as(c_int, 0x7F);
-// }
-// pub inline fn WITH_TWO_PARAMETERS(signed: anytype, x: anytype) @TypeOf((signed + x) + @as(c_int, 9)) {
-// _ = &signed;
-// _ = &x;
-// return (signed + x) + @as(c_int, 9);
-// }
-// pub inline fn GUARDED_ALIGNOF(_Alignof: anytype) @TypeOf(_Alignof & @as(c_int, 0x55)) {
-// _ = &_Alignof;
-// return _Alignof & @as(c_int, 0x55);
-// }
-// pub inline fn UNGUARDED_ALIGNOF(_Alignof: anytype) @TypeOf(_Alignof | @as(c_int, 0x80)) {
-// _ = &_Alignof;
-// return _Alignof | @as(c_int, 0x80);
-// }
-// pub inline fn GUARDED_SIZEOF(sizeof: anytype) @TypeOf(sizeof == @as(c_int, 64)) {
-// _ = &sizeof;
-// return sizeof == @as(c_int, 64);
-// }
-// pub inline fn UNGUARDED_SIZEOF(sizeof: anytype) @TypeOf(sizeof < @as(c_int, 64)) {
-// _ = &sizeof;
-// return sizeof < @as(c_int, 64);
-// }
-// pub inline fn SIZEOF(x: anytype) c_int {
-// _ = &x;
-// return @import("std").zig.c_translation.cast(c_int, @import("std").zig.c_translation.sizeof(x));
-// }
-// pub inline fn SIZEOF2(x: anytype) c_int {
-// _ = &x;
-// return @import("std").zig.c_translation.cast(c_int, @import("std").zig.c_translation.sizeof(x));
-// }
test/cases/translate_c/circular_struct_definitions.c
@@ -1,20 +0,0 @@
-struct Bar;
-
-struct Foo {
- struct Bar *next;
-};
-
-struct Bar {
- struct Foo *next;
-};
-
-// translate-c
-// c_frontend=clang
-//
-// pub const struct_Bar = extern struct {
-// next: [*c]struct_Foo = @import("std").mem.zeroes([*c]struct_Foo),
-// };
-//
-// pub const struct_Foo = extern struct {
-// next: [*c]struct_Bar = @import("std").mem.zeroes([*c]struct_Bar),
-// };
test/cases/translate_c/continue_from_while.c
@@ -1,14 +0,0 @@
-void foo() {
- for (;;) {
- continue;
- }
-}
-
-// translate-c
-// c_frontend=clang
-//
-// pub export fn foo() void {
-// while (true) {
-// continue;
-// }
-// }
test/cases/translate_c/double_define_struct.c
@@ -1,25 +0,0 @@
-typedef struct Bar Bar;
-typedef struct Foo Foo;
-
-struct Foo {
- Foo *a;
-};
-
-struct Bar {
- Foo *a;
-};
-
-// translate-c
-// c_frontend=clang
-//
-// pub const struct_Foo = extern struct {
-// a: [*c]Foo = @import("std").mem.zeroes([*c]Foo),
-// };
-//
-// pub const Foo = struct_Foo;
-//
-// pub const struct_Bar = extern struct {
-// a: [*c]Foo = @import("std").mem.zeroes([*c]Foo),
-// };
-//
-// pub const Bar = struct_Bar;
test/cases/translate_c/empty declaration.c
@@ -1,6 +0,0 @@
-;
-
-// translate-c
-// c_frontend=clang,aro
-//
-//
\ No newline at end of file
test/cases/translate_c/empty union initializer list.c
@@ -1,20 +0,0 @@
-union U {
- int x;
- long y;
-};
-
-void foo(void) {
- union U u = {};
-}
-// translate-c
-// target=x86_64-linux
-// c_frontend=clang
-//
-// pub const union_U = extern union {
-// x: c_int,
-// y: c_long,
-// };
-// pub export fn foo() void {
-// var u: union_U = @import("std").mem.zeroes(union_U);
-// _ = &u;
-// }
test/cases/translate_c/enums msvc.c
@@ -1,16 +0,0 @@
-enum Foo {
- FooA = 2,
- FooB = 5,
- Foo1,
-};
-
-// translate-c
-// target=x86_64-windows-msvc
-// c_frontend=clang
-//
-// pub const FooA: c_int = 2;
-// pub const FooB: c_int = 5;
-// pub const Foo1: c_int = 6;
-// pub const enum_Foo = c_int;
-//
-// pub const Foo = enum_Foo;
test/cases/translate_c/enums.c
@@ -1,16 +0,0 @@
-enum Foo {
- FooA = 2,
- FooB = 5,
- Foo1,
-};
-
-// translate-c
-// target=x86_64-linux
-// c_frontend=clang,aro
-//
-// pub const FooA: c_int = 2;
-// pub const FooB: c_int = 5;
-// pub const Foo1: c_int = 6;
-// pub const enum_Foo = c_uint;
-//
-// pub const Foo = enum_Foo;
test/cases/translate_c/field_access_is_grouped_if_necessary.c
@@ -1,18 +0,0 @@
-unsigned long foo(unsigned long x) {
- return ((union{unsigned long _x}){x})._x;
-}
-
-// translate-c
-// c_frontend=clang
-//
-// pub export fn foo(arg_x: c_ulong) c_ulong {
-// var x = arg_x;
-// _ = &x;
-// const union_unnamed_1 = extern union {
-// _x: c_ulong,
-// };
-// _ = &union_unnamed_1;
-// return (union_unnamed_1{
-// ._x = x,
-// })._x;
-// }
test/cases/translate_c/function prototype with parenthesis.c
@@ -1,10 +0,0 @@
-void (f0) (void *L);
-void ((f1)) (void *L);
-void (((f2))) (void *L);
-
-// translate-c
-// c_frontend=clang,aro
-//
-// pub extern fn f0(L: ?*anyopaque) void;
-// pub extern fn f1(L: ?*anyopaque) void;
-// pub extern fn f2(L: ?*anyopaque) void;
test/cases/translate_c/global_struct_whose_default_name_conflicts_with_global_is_mangled.c
@@ -1,15 +0,0 @@
-struct foo {
- int x;
-};
-const char *struct_foo = "hello world";
-
-// translate-c
-// c_frontend=clang
-//
-// pub const struct_foo_1 = extern struct {
-// x: c_int = @import("std").mem.zeroes(c_int),
-// };
-//
-// pub const foo = struct_foo_1;
-//
-// pub export var struct_foo: [*c]const u8 = "hello world";
test/cases/translate_c/large_packed_struct.c
@@ -1,20 +0,0 @@
-struct __attribute__((packed)) bar {
- short a;
- float b;
- double c;
- short x;
- float y;
- double z;
-};
-
-// translate-c
-// c_frontend=aro,clang
-//
-// pub const struct_bar = extern struct {
-// a: c_short align(1) = @import("std").mem.zeroes(c_short),
-// b: f32 align(1) = @import("std").mem.zeroes(f32),
-// c: f64 align(1) = @import("std").mem.zeroes(f64),
-// x: c_short align(1) = @import("std").mem.zeroes(c_short),
-// y: f32 align(1) = @import("std").mem.zeroes(f32),
-// z: f64 align(1) = @import("std").mem.zeroes(f64),
-// };
test/cases/translate_c/macro_calling_convention.c
@@ -1,9 +0,0 @@
-#define SYSV_ABI __attribute__((sysv_abi))
-void SYSV_ABI foo(void);
-
-
-// translate-c
-// c_frontend=clang
-// target=x86_64-windows
-//
-// pub extern fn foo() callconv(.{ .x86_64_sysv = .{} }) void;
test/cases/translate_c/macro_function_string_concat.c
@@ -1,11 +0,0 @@
-#define bar() ""
-#define FOO bar() "," bar()
-
-// translate-c
-// target=x86_64-linux
-// c_frontend=clang
-//
-// pub inline fn bar() @TypeOf("") {
-// return "";
-// }
-// pub const FOO = bar() ++ "," ++ bar();
test/cases/translate_c/macro_referencing_var.c
@@ -1,21 +0,0 @@
-extern float foo;
-#define FOO_TWICE foo * 2.0f
-#define FOO_NEGATIVE -foo
-
-#define BAR 10.0f
-#define BAR_TWICE BAR * 2.0f
-
-// translate-c
-// c_frontend=clang
-//
-// pub extern var foo: f32;
-//
-// pub inline fn FOO_TWICE() @TypeOf(foo * @as(f32, 2.0)) {
-// return foo * @as(f32, 2.0);
-// }
-//
-// pub inline fn FOO_NEGATIVE() @TypeOf(-foo) {
-// return -foo;
-// }
-// pub const BAR = @as(f32, 10.0);
-// pub const BAR_TWICE = BAR * @as(f32, 2.0);
test/cases/translate_c/noreturn attribute.c
@@ -1,6 +0,0 @@
-void foo(void) __attribute__((noreturn));
-
-// translate-c
-// c_frontend=aro,clang
-//
-// pub extern fn foo() noreturn;
test/cases/translate_c/packed_union_nested_unpacked.c
@@ -1,25 +0,0 @@
-// NOTE: The nested struct is *not* packed/aligned,
-// even though the parent struct is
-// this is consistent with GCC docs
-union Foo{
- short x;
- double y;
- struct {
- int b;
- } z;
-} __attribute__((packed));
-
-// translate-c
-// c_frontend=aro,clang
-//
-// const struct_unnamed_1 = extern struct {
-// b: c_int = @import("std").mem.zeroes(c_int),
-// };
-//
-// pub const union_Foo = extern union {
-// x: c_short align(1),
-// y: f64 align(1),
-// z: struct_unnamed_1 align(1),
-// };
-//
-// pub const Foo = union_Foo;
test/cases/translate_c/packed_union_simple.c
@@ -1,14 +0,0 @@
-union Foo {
- short x;
- double y;
-} __attribute__((packed));
-
-// translate-c
-// c_frontend=aro,clang
-//
-// pub const union_Foo = extern union {
-// x: c_short align(1),
-// y: f64 align(1),
-// };
-//
-// pub const Foo = union_Foo;
test/cases/translate_c/pointer_to_struct_demoted_opaque_due_to_bit_fields.c
@@ -1,15 +0,0 @@
-struct Foo {
- unsigned int: 1;
-};
-struct Bar {
- struct Foo *foo;
-};
-
-// translate-c
-// c_frontend=clang
-//
-// pub const struct_Foo = opaque {};
-//
-// pub const struct_Bar = extern struct {
-// foo: ?*struct_Foo = @import("std").mem.zeroes(?*struct_Foo),
-// };
test/cases/translate_c/qualified_struct_and_enum.c
@@ -1,25 +0,0 @@
-struct Foo {
- int x;
- int y;
-};
-enum Bar {
- BarA,
- BarB,
-};
-void func(struct Foo *a, enum Bar **b);
-
-// translate-c
-// c_frontend=clang
-// target=x86_64-linux,x86_64-macos
-//
-// pub const struct_Foo = extern struct {
-// x: c_int = @import("std").mem.zeroes(c_int),
-// y: c_int = @import("std").mem.zeroes(c_int),
-// };
-// pub const BarA: c_int = 0;
-// pub const BarB: c_int = 1;
-// pub const enum_Bar = c_uint;
-// pub extern fn func(a: [*c]struct_Foo, b: [*c][*c]enum_Bar) void;
-//
-// pub const Foo = struct_Foo;
-// pub const Bar = enum_Bar;
test/cases/translate_c/qualified_struct_and_enum_msvc.c
@@ -1,25 +0,0 @@
-struct Foo {
- int x;
- int y;
-};
-enum Bar {
- BarA,
- BarB,
-};
-void func(struct Foo *a, enum Bar **b);
-
-// translate-c
-// c_frontend=clang
-// target=x86_64-windows-msvc
-//
-// pub const struct_Foo = extern struct {
-// x: c_int = @import("std").mem.zeroes(c_int),
-// y: c_int = @import("std").mem.zeroes(c_int),
-// };
-// pub const BarA: c_int = 0;
-// pub const BarB: c_int = 1;
-// pub const enum_Bar = c_int;
-// pub extern fn func(a: [*c]struct_Foo, b: [*c][*c]enum_Bar) void;
-//
-// pub const Foo = struct_Foo;
-// pub const Bar = enum_Bar;
test/cases/translate_c/scoped_record.c
@@ -1,49 +0,0 @@
-void foo() {
- struct Foo {
- int A;
- int B;
- int C;
- };
- struct Foo a = {0};
- {
- struct Foo {
- int A;
- int B;
- int C;
- };
- struct Foo a = {0};
- }
-}
-
-// translate-c
-// c_frontend=clang
-//
-// pub export fn foo() void {
-// const struct_Foo = extern struct {
-// A: c_int = @import("std").mem.zeroes(c_int),
-// B: c_int = @import("std").mem.zeroes(c_int),
-// C: c_int = @import("std").mem.zeroes(c_int),
-// };
-// _ = &struct_Foo;
-// var a: struct_Foo = struct_Foo{
-// .A = @as(c_int, 0),
-// .B = 0,
-// .C = 0,
-// };
-// _ = &a;
-// {
-// const struct_Foo_1 = extern struct {
-// A: c_int = @import("std").mem.zeroes(c_int),
-// B: c_int = @import("std").mem.zeroes(c_int),
-// C: c_int = @import("std").mem.zeroes(c_int),
-// };
-// _ = &struct_Foo_1;
-// var a_2: struct_Foo_1 = struct_Foo_1{
-// .A = @as(c_int, 0),
-// .B = 0,
-// .C = 0,
-// };
-// _ = &a_2;
-// }
-// }
-
test/cases/translate_c/simple function prototypes.c
@@ -1,8 +0,0 @@
-void __attribute__((noreturn)) foo(void);
-int bar(void);
-
-// translate-c
-// c_frontend=clang,aro
-//
-// pub extern fn foo() noreturn;
-// pub extern fn bar() c_int;
test/cases/translate_c/simple_struct.c
@@ -1,12 +0,0 @@
-struct Foo {
- int x;
-};
-
-// translate-c
-// c_frontend=aro,clang
-//
-// const struct_Foo = extern struct {
-// x: c_int = @import("std").mem.zeroes(c_int),
-// };
-//
-// pub const Foo = struct_Foo;
test/cases/translate_c/simple_union.c
@@ -1,12 +0,0 @@
-union Foo {
- int x;
-};
-
-// translate-c
-// c_frontend=aro,clang
-//
-// pub const union_Foo = extern union {
-// x: c_int,
-// };
-//
-// pub const Foo = union_Foo;
test/cases/translate_c/static empty struct.c
@@ -1,17 +0,0 @@
-struct empty_struct {};
-
-static inline void foo() {
- static struct empty_struct bar = {};
-}
-
-// translate-c
-// target=x86_64-linux
-// c_frontend=clang
-//
-// pub const struct_empty_struct = extern struct {};
-// pub fn foo() callconv(.c) void {
-// const bar = struct {
-// var static: struct_empty_struct = @import("std").mem.zeroes(struct_empty_struct);
-// };
-// _ = &bar;
-// }
test/cases/translate_c/strlit_as_bool.c
@@ -1,8 +0,0 @@
-void foo() { if(0 && "error message") {} }
-
-// translate-c
-// c_frontend=clang
-//
-// pub export fn foo() void {
-// if (false and (@intFromPtr("error message") != 0)) {}
-// }
test/cases/translate_c/struct prototype used in func.c
@@ -1,10 +0,0 @@
-struct Foo;
-struct Foo *some_func(struct Foo *foo, int x);
-
-// translate-c
-// c_frontend=clang,aro
-//
-// pub const struct_Foo = opaque {};
-// pub extern fn some_func(foo: ?*struct_Foo, x: c_int) ?*struct_Foo;
-//
-// pub const Foo = struct_Foo;
test/cases/translate_c/struct_in_struct_init_to_zero.c
@@ -1,24 +0,0 @@
-struct Foo {
- int a;
- struct Bar {
- int a;
- } b;
-} a = {};
-#define PTR void *
-
-// translate-c
-// c_frontend=clang
-//
-// pub const struct_Bar_1 = extern struct {
-// a: c_int = @import("std").mem.zeroes(c_int),
-// };
-// pub const struct_Foo = extern struct {
-// a: c_int = @import("std").mem.zeroes(c_int),
-// b: struct_Bar_1 = @import("std").mem.zeroes(struct_Bar_1),
-// };
-// pub export var a: struct_Foo = struct_Foo{
-// .a = 0,
-// .b = @import("std").mem.zeroes(struct_Bar_1),
-// };
-//
-// pub const PTR = ?*anyopaque;
test/cases/translate_c/struct_with_aligned_fields.c
@@ -1,10 +0,0 @@
-struct foo {
- __attribute__((aligned(4))) short bar;
-};
-
-// translate-c
-// c_frontend=aro,clang
-//
-// pub const struct_foo = extern struct {
-// bar: c_short align(4) = @import("std").mem.zeroes(c_short),
-// };
test/cases/translate_c/struct_with_invalid_field_alignment.c
@@ -1,35 +0,0 @@
-// The aligned attribute cannot decrease the alignment of a field. The packed attribute is required
-// for decreasing the alignment. gcc and clang will compile these structs without error
-// (and possibly without warning), but checking the alignment will reveal a different value than
-// what was requested. This is consistent with the gcc documentation on type attributes.
-//
-// This test is currently broken for the clang frontend. See issue #19307.
-
-struct foo {
- __attribute__((aligned(1)))int x;
-};
-
-struct bar {
- __attribute__((aligned(2)))float y;
-};
-
-struct baz {
- __attribute__((aligned(4)))double z;
-};
-
-// translate-c
-// c_frontend=aro
-// target=x86_64-linux
-//
-// pub const struct_foo = extern struct {
-// x: c_int = @import("std").mem.zeroes(c_int),
-// };
-//
-// pub const struct_bar = extern struct {
-// y: f32 = @import("std").mem.zeroes(f32),
-// };
-//
-// pub const struct_baz = extern struct {
-// z: f64 = @import("std").mem.zeroes(f64),
-// };
-//
test/cases/translate_c/type_referenced_struct.c
@@ -1,19 +0,0 @@
-// When clang uses the <arch>-windows-none, triple it behaves as MSVC and
-// interprets the inner `struct Bar` as an anonymous structure
-struct Foo {
- struct Bar{
- int b;
- };
- struct Bar c;
-};
-
-// translate-c
-// c_frontend=aro,clang
-// target=x86_64-linux-gnu
-//
-// pub const struct_Bar_1 = extern struct {
-// b: c_int = @import("std").mem.zeroes(c_int),
-// };
-// pub const struct_Foo = extern struct {
-// c: struct_Bar_1 = @import("std").mem.zeroes(struct_Bar_1),
-// };
test/cases/translate_c/union_initializer.c
@@ -1,22 +0,0 @@
-union { int x; char c[4]; }
- ua = {1},
- ub = {.c={'a','b','b','a'}};
-
-// translate-c
-// c_frontend=clang
-//
-// const union_unnamed_1 = extern union {
-// x: c_int,
-// c: [4]u8,
-// };
-// pub export var ua: union_unnamed_1 = union_unnamed_1{
-// .x = @as(c_int, 1),
-// };
-// pub export var ub: union_unnamed_1 = union_unnamed_1{
-// .c = [4]u8{
-// 'a',
-// 'b',
-// 'b',
-// 'a',
-// },
-// };
test/cases/translate_c/union_struct_forward_decl.c
@@ -1,37 +0,0 @@
-struct A;
-union B;
-enum C;
-
-struct A {
- short x;
- double y;
-};
-
-union B {
- short x;
- double y;
-};
-
-struct Foo {
- struct A a;
- union B b;
-};
-
-
-// translate-c
-// c_frontend=aro,clang
-//
-// pub const struct_A = extern struct {
-// x: c_short = @import("std").mem.zeroes(c_short),
-// y: f64 = @import("std").mem.zeroes(f64),
-// };
-//
-// pub const union_B = extern union {
-// x: c_short,
-// y: f64,
-// };
-//
-// pub const struct_Foo = extern struct {
-// a: struct_A = @import("std").mem.zeroes(struct_A),
-// b: union_B = @import("std").mem.zeroes(union_B),
-// };
test/cases/translate_c/unnamed_fields_have_predictable_names.c
@@ -1,22 +0,0 @@
-struct a {
- struct { int x; };
-};
-struct b {
- struct { int y; };
-};
-
-// translate-c
-// c_frontend=aro,clang
-//
-// const struct_unnamed_1 = extern struct {
-// x: c_int = @import("std").mem.zeroes(c_int),
-// };
-// pub const struct_a = extern struct {
-// unnamed_0: struct_unnamed_1 = @import("std").mem.zeroes(struct_unnamed_1),
-// };
-// const struct_unnamed_2 = extern struct {
-// y: c_int = @import("std").mem.zeroes(c_int),
-// };
-// pub const struct_b = extern struct {
-// unnamed_0: struct_unnamed_2 = @import("std").mem.zeroes(struct_unnamed_2),
-// };
test/cases/translate_c/void_pointer_subtraction.c
@@ -1,16 +0,0 @@
-#include <stddef.h>
-ptrdiff_t sub_ptr(void *a, void *b) {
- return a - b;
-}
-
-// translate-c
-// c_frontend=clang
-// target=x86_64-linux
-//
-// pub export fn sub_ptr(arg_a: ?*anyopaque, arg_b: ?*anyopaque) ptrdiff_t {
-// var a = arg_a;
-// _ = &a;
-// var b = arg_b;
-// _ = &b;
-// return @as(c_long, @bitCast(@intFromPtr(a) -% @intFromPtr(b)));
-// }
test/cases/translate_c/zero_width_field_alignment.c
@@ -1,18 +0,0 @@
-struct __attribute__((packed)) foo {
- int x;
- struct {};
- float y;
- union {};
-};
-
-// translate-c
-// c_frontend=aro
-//
-// const struct_unnamed_1 = extern struct {};
-// const union_unnamed_2 = extern union {};
-// pub const struct_foo = extern struct {
-// x: c_int align(1) = @import("std").mem.zeroes(c_int),
-// unnamed_0: struct_unnamed_1 align(1) = @import("std").mem.zeroes(struct_unnamed_1),
-// y: f32 align(1) = @import("std").mem.zeroes(f32),
-// unnamed_1: union_unnamed_2 align(1) = @import("std").mem.zeroes(union_unnamed_2),
-// };
test/cases/translate_c/zig_keywords_in_c_code.c
@@ -1,12 +0,0 @@
-struct comptime {
- int defer;
-};
-
-// translate-c
-// c_frontend=aro,clang
-//
-// pub const struct_comptime = extern struct {
-// @"defer": c_int = @import("std").mem.zeroes(c_int),
-// };
-//
-// pub const @"comptime" = struct_comptime;
test/cases/README.md
@@ -22,33 +22,6 @@ This will do `zig run` on the code and expect exit code 0.
// run
```
-## Translate-c
-
-If you want to test translating C code to Zig use `translate-c`:
-
-```c
-// translate-c
-// c_frontend=aro,clang
-// target=x86_64-linux
-//
-// pub const foo = 1;
-// pub const immediately_after_foo = 2;
-//
-// pub const somewhere_else_in_the_file = 3:
-```
-
-## Run Translated C
-
-If you want to test translating C code to Zig and then executing it use `run-translated-c`:
-
-```c
-// run-translated-c
-// c_frontend=aro,clang
-// target=x86_64-linux
-//
-// Hello world!
-```
-
## Incremental Compilation
Make multiple files that have ".", and then an integer, before the ".zig"
test/src/Cases.zig
@@ -9,7 +9,6 @@ const ArrayList = std.ArrayList;
gpa: Allocator,
arena: Allocator,
cases: std.array_list.Managed(Case),
-translate: std.array_list.Managed(Translate),
pub const IncrementalCase = struct {
base_path: []const u8,
@@ -127,25 +126,6 @@ pub const Case = struct {
}
};
-pub const Translate = struct {
- /// The name of the test case. This is shown if a test fails, and
- /// otherwise ignored.
- name: []const u8,
-
- input: [:0]const u8,
- target: std.Build.ResolvedTarget,
- link_libc: bool,
- c_frontend: CFrontend,
- kind: union(enum) {
- /// Translate the input, run it and check that it
- /// outputs the expected text.
- run: []const u8,
- /// Translate the input and check that it contains
- /// the expected lines of code.
- translate: []const []const u8,
- },
-};
-
pub fn addExe(
ctx: *Cases,
name: []const u8,
@@ -374,7 +354,6 @@ fn addFromDirInner(
const backends = try manifest.getConfigForKeyAlloc(ctx.arena, "backend", Backend);
const targets = try manifest.getConfigForKeyAlloc(ctx.arena, "target", std.Target.Query);
- const c_frontends = try manifest.getConfigForKeyAlloc(ctx.arena, "c_frontend", CFrontend);
const is_test = try manifest.getConfigForKeyAssertSingle("is_test", bool);
const link_libc = try manifest.getConfigForKeyAssertSingle("link_libc", bool);
const output_mode = try manifest.getConfigForKeyAssertSingle("output_mode", std.builtin.OutputMode);
@@ -384,39 +363,6 @@ fn addFromDirInner(
const emit_bin = try manifest.getConfigForKeyAssertSingle("emit_bin", bool);
const imports = try manifest.getConfigForKeyAlloc(ctx.arena, "imports", []const u8);
- if (manifest.type == .translate_c) {
- for (c_frontends) |c_frontend| {
- for (targets) |target_query| {
- const output = try manifest.trailingLinesSplit(ctx.arena);
- try ctx.translate.append(.{
- .name = try caseNameFromPath(ctx.arena, filename),
- .c_frontend = c_frontend,
- .target = b.resolveTargetQuery(target_query),
- .link_libc = link_libc,
- .input = src,
- .kind = .{ .translate = output },
- });
- }
- }
- continue;
- }
- if (manifest.type == .run_translated_c) {
- for (c_frontends) |c_frontend| {
- for (targets) |target_query| {
- const output = try manifest.trailingSplit(ctx.arena);
- try ctx.translate.append(.{
- .name = try caseNameFromPath(ctx.arena, filename),
- .c_frontend = c_frontend,
- .target = b.resolveTargetQuery(target_query),
- .link_libc = link_libc,
- .input = src,
- .kind = .{ .run = output },
- });
- }
- }
- continue;
- }
-
var cases = std.array_list.Managed(usize).init(ctx.arena);
// Cross-product to get all possible test combinations
@@ -484,101 +430,11 @@ fn addFromDirInner(
pub fn init(gpa: Allocator, arena: Allocator) Cases {
return .{
.gpa = gpa,
- .cases = std.array_list.Managed(Case).init(gpa),
- .translate = std.array_list.Managed(Translate).init(gpa),
+ .cases = .init(gpa),
.arena = arena,
};
}
-pub const TranslateCOptions = struct {
- skip_translate_c: bool = false,
- skip_run_translated_c: bool = false,
-};
-pub fn lowerToTranslateCSteps(
- self: *Cases,
- b: *std.Build,
- parent_step: *std.Build.Step,
- test_filters: []const []const u8,
- test_target_filters: []const []const u8,
- target: std.Build.ResolvedTarget,
- translate_c_options: TranslateCOptions,
-) void {
- const tests = @import("../tests.zig");
- const test_translate_c_step = b.step("test-translate-c", "Run the C translation tests");
- if (!translate_c_options.skip_translate_c) {
- tests.addTranslateCTests(b, test_translate_c_step, test_filters, test_target_filters);
- parent_step.dependOn(test_translate_c_step);
- }
-
- const test_run_translated_c_step = b.step("test-run-translated-c", "Run the Run-Translated-C tests");
- if (!translate_c_options.skip_run_translated_c) {
- tests.addRunTranslatedCTests(b, test_run_translated_c_step, test_filters, target);
- parent_step.dependOn(test_run_translated_c_step);
- }
-
- for (self.translate.items) |case| switch (case.kind) {
- .run => |output| {
- if (translate_c_options.skip_run_translated_c) continue;
- const annotated_case_name = b.fmt("run-translated-c {s}", .{case.name});
- for (test_filters) |test_filter| {
- if (std.mem.indexOf(u8, annotated_case_name, test_filter)) |_| break;
- } else if (test_filters.len > 0) continue;
- if (!std.process.can_spawn) {
- std.debug.print("Unable to spawn child processes on {s}, skipping test.\n", .{@tagName(builtin.os.tag)});
- continue; // Pass test.
- }
-
- const write_src = b.addWriteFiles();
- const file_source = write_src.add("tmp.c", case.input);
-
- const translate_c = b.addTranslateC(.{
- .root_source_file = file_source,
- .optimize = .Debug,
- .target = case.target,
- .link_libc = case.link_libc,
- .use_clang = case.c_frontend == .clang,
- });
- translate_c.step.name = b.fmt("{s} translate-c", .{annotated_case_name});
-
- const run_exe = b.addExecutable(.{
- .name = "translated_c",
- .root_module = translate_c.createModule(),
- });
- run_exe.step.name = b.fmt("{s} build-exe", .{annotated_case_name});
- run_exe.root_module.link_libc = true;
- const run = b.addRunArtifact(run_exe);
- run.step.name = b.fmt("{s} run", .{annotated_case_name});
- run.expectStdOutEqual(output);
- run.skip_foreign_checks = true;
-
- test_run_translated_c_step.dependOn(&run.step);
- },
- .translate => |output| {
- if (translate_c_options.skip_translate_c) continue;
- const annotated_case_name = b.fmt("zig translate-c {s}", .{case.name});
- for (test_filters) |test_filter| {
- if (std.mem.indexOf(u8, annotated_case_name, test_filter)) |_| break;
- } else if (test_filters.len > 0) continue;
-
- const write_src = b.addWriteFiles();
- const file_source = write_src.add("tmp.c", case.input);
-
- const translate_c = b.addTranslateC(.{
- .root_source_file = file_source,
- .optimize = .Debug,
- .target = case.target,
- .link_libc = case.link_libc,
- .use_clang = case.c_frontend == .clang,
- });
- translate_c.step.name = b.fmt("{s} translate-c", .{annotated_case_name});
-
- const check_file = translate_c.addCheckFile(output);
- check_file.step.name = b.fmt("{s} CheckFile", .{annotated_case_name});
- test_translate_c_step.dependOn(&check_file.step);
- },
- };
-}
-
pub const CaseTestOptions = struct {
test_filters: []const []const u8,
test_target_filters: []const []const u8,
test/run_translated_c.zig
@@ -1,1825 +0,0 @@
-const std = @import("std");
-const tests = @import("tests.zig");
-const nl = if (@import("builtin").os.tag == .windows) "\r\n" else "\n";
-
-// *********************************************************
-// * *
-// * DO NOT ADD NEW CASES HERE *
-// * instead add a file to test/cases/run_translated_c *
-// * *
-// *********************************************************
-
-pub fn addCases(cases: *tests.RunTranslatedCContext) void {
- cases.add("division of floating literals",
- \\#define _NO_CRT_STDIO_INLINE 1
- \\#include <stdio.h>
- \\#define PI 3.14159265358979323846f
- \\#define DEG2RAD (PI/180.0f)
- \\int main(void) {
- \\ printf("DEG2RAD is: %f\n", DEG2RAD);
- \\ return 0;
- \\}
- , "DEG2RAD is: 0.017453" ++ nl);
-
- cases.add("use global scope for record/enum/typedef type translation if needed",
- \\void bar(void);
- \\void baz(void);
- \\struct foo { int x; };
- \\void bar() {
- \\ struct foo tmp;
- \\}
- \\
- \\void baz() {
- \\ struct foo tmp;
- \\}
- \\
- \\int main(void) {
- \\ bar();
- \\ baz();
- \\ return 0;
- \\}
- , "");
-
- cases.add("failed macros are only declared once",
- \\#define FOO =
- \\#define FOO =
- \\#define PtrToPtr64(p) ((void *POINTER_64) p)
- \\#define STRUC_ALIGNED_STACK_COPY(t,s) ((CONST t *)(s))
- \\#define bar = 0x
- \\#define baz = 0b
- \\int main(void) {}
- , "");
-
- cases.add("parenthesized string literal",
- \\void foo(const char *s) {}
- \\int main(void) {
- \\ foo(("bar"));
- \\}
- , "");
-
- cases.add("variable shadowing type type",
- \\#include <stdlib.h>
- \\int main() {
- \\ int type = 1;
- \\ if (type != 1) abort();
- \\}
- , "");
-
- cases.add("assignment as expression",
- \\#include <stdlib.h>
- \\int main() {
- \\ int a, b, c, d = 5;
- \\ int e = a = b = c = d;
- \\ if (e != 5) abort();
- \\}
- , "");
-
- cases.add("static variable in block scope",
- \\#include <stdlib.h>
- \\int foo() {
- \\ static int bar;
- \\ bar += 1;
- \\ return bar;
- \\}
- \\int main() {
- \\ foo();
- \\ foo();
- \\ if (foo() != 3) abort();
- \\}
- , "");
-
- cases.add("array initializer",
- \\#include <stdlib.h>
- \\int main(int argc, char **argv) {
- \\ int a0[4] = {1};
- \\ int a1[4] = {1,2,3,4};
- \\ int s0 = 0, s1 = 0;
- \\ for (int i = 0; i < 4; i++) {
- \\ s0 += a0[i];
- \\ s1 += a1[i];
- \\ }
- \\ if (s0 != 1) abort();
- \\ if (s1 != 10) abort();
- \\}
- , "");
-
- cases.add("forward declarations",
- \\#include <stdlib.h>
- \\int foo(int);
- \\int foo(int x) { return x + 1; }
- \\int main(int argc, char **argv) {
- \\ if (foo(2) != 3) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("typedef and function pointer",
- \\#include <stdlib.h>
- \\typedef struct _Foo Foo;
- \\typedef int Ret;
- \\typedef int Param;
- \\struct _Foo { Ret (*func)(Param p); };
- \\static Ret add1(Param p) {
- \\ return p + 1;
- \\}
- \\int main(int argc, char **argv) {
- \\ Foo strct = { .func = add1 };
- \\ if (strct.func(16) != 17) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("ternary operator",
- \\#include <stdlib.h>
- \\static int cnt = 0;
- \\int foo() { cnt++; return 42; }
- \\int main(int argc, char **argv) {
- \\ short q = 3;
- \\ signed char z0 = q?:1;
- \\ if (z0 != 3) abort();
- \\ int z1 = 3?:1;
- \\ if (z1 != 3) abort();
- \\ int z2 = foo()?:-1;
- \\ if (z2 != 42) abort();
- \\ if (cnt != 1) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("switch case",
- \\#include <stdlib.h>
- \\int lottery(unsigned int x) {
- \\ switch (x) {
- \\ case 3: return 0;
- \\ case -1: return 3;
- \\ case 8 ... 10: return x;
- \\ default: return -1;
- \\ }
- \\}
- \\int main(int argc, char **argv) {
- \\ if (lottery(2) != -1) abort();
- \\ if (lottery(3) != 0) abort();
- \\ if (lottery(-1) != 3) abort();
- \\ if (lottery(9) != 9) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("boolean values and expressions",
- \\#include <stdlib.h>
- \\static const _Bool false_val = 0;
- \\static const _Bool true_val = 1;
- \\void foo(int x, int y) {
- \\ _Bool r = x < y;
- \\ if (!r) abort();
- \\ _Bool self = foo;
- \\ if (self == false_val) abort();
- \\ if (((r) ? 'a' : 'b') != 'a') abort();
- \\}
- \\int main(int argc, char **argv) {
- \\ foo(2, 5);
- \\ if (false_val == true_val) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("hello world",
- \\#define _NO_CRT_STDIO_INLINE 1
- \\#include <stdio.h>
- \\int main(int argc, char **argv) {
- \\ printf("hello, world!\n");
- \\ return 0;
- \\}
- , "hello, world!" ++ nl);
-
- cases.add("anon struct init",
- \\#include <stdlib.h>
- \\struct {int a; int b;} x = {1, 2};
- \\int main(int argc, char **argv) {
- \\ x.a += 2;
- \\ x.b += 1;
- \\ if (x.a != 3) abort();
- \\ if (x.b != 3) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("casting away const and volatile",
- \\void foo(int *a) {}
- \\void bar(const int *a) {
- \\ foo((int *)a);
- \\}
- \\void baz(volatile int *a) {
- \\ foo((int *)a);
- \\}
- \\int main(int argc, char **argv) {
- \\ int a = 0;
- \\ bar((const int *)&a);
- \\ baz((volatile int *)&a);
- \\ return 0;
- \\}
- , "");
-
- cases.add("anonymous struct & unions",
- \\#include <stdlib.h>
- \\#include <stdint.h>
- \\static struct { struct { uint16_t x, y; }; } x = { 1 };
- \\static struct { union { uint32_t x; uint8_t y; }; } y = { 0x55AA55AA };
- \\int main(int argc, char **argv) {
- \\ if (x.x != 1) abort();
- \\ if (x.y != 0) abort();
- \\ if (y.x != 0x55AA55AA) abort();
- \\ if (y.y != 0xAA) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("array to pointer decay",
- \\#include <stdlib.h>
- \\int main(int argc, char **argv) {
- \\ char data[3] = {'a','b','c'};
- \\ if (2[data] != data[2]) abort();
- \\ if ("abc"[1] != data[1]) abort();
- \\ char *as_ptr = data;
- \\ if (2[as_ptr] != as_ptr[2]) abort();
- \\ if ("abc"[1] != as_ptr[1]) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("struct initializer - packed",
- \\#define _NO_CRT_STDIO_INLINE 1
- \\#include <stdint.h>
- \\#include <stdlib.h>
- \\struct s {uint8_t x,y;
- \\ uint32_t z;} __attribute__((packed)) s0 = {1, 2};
- \\int main() {
- \\ /* sizeof nor offsetof currently supported */
- \\ if (((intptr_t)&s0.z - (intptr_t)&s0.x) != 2) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("cast signed array index to unsigned",
- \\#include <stdlib.h>
- \\int main(int argc, char **argv) {
- \\ int a[10], i = 0;
- \\ a[i] = 0;
- \\ if (a[i] != 0) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("cast long long array index to unsigned",
- \\#include <stdlib.h>
- \\int main(int argc, char **argv) {
- \\ long long a[10], i = 0;
- \\ a[i] = 0;
- \\ if (a[i] != 0) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("case boolean expression converted to int",
- \\#include <stdlib.h>
- \\int main(int argc, char **argv) {
- \\ int value = 1 + 2 * 3 + 4 * 5 + 6 << 7 | 8 == 9;
- \\ if (value != 4224) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("case boolean expression on left converted to int",
- \\#include <stdlib.h>
- \\int main(int argc, char **argv) {
- \\ int value = 8 == 9 | 1 + 2 * 3 + 4 * 5 + 6 << 7;
- \\ if (value != 4224) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("case boolean and operator+ converts bool to int",
- \\#include <stdlib.h>
- \\int main(int argc, char **argv) {
- \\ int value = (8 == 9) + 3;
- \\ int value2 = 3 + (8 == 9);
- \\ if (value != value2) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("case boolean and operator<",
- \\#include <stdlib.h>
- \\int main(int argc, char **argv) {
- \\ int value = (8 == 9) < 3;
- \\ if (value == 0) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("case boolean and operator*",
- \\#include <stdlib.h>
- \\int main(int argc, char **argv) {
- \\ int value = (8 == 9) * 3;
- \\ int value2 = 3 * (9 == 9);
- \\ if (value != 0) abort();
- \\ if (value2 == 0) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("scoped typedef",
- \\int main(int argc, char **argv) {
- \\ typedef int Foo;
- \\ typedef Foo Bar;
- \\ typedef void (*func)(int);
- \\ typedef int uint32_t;
- \\ uint32_t a;
- \\ Foo i;
- \\ Bar j;
- \\ return 0;
- \\}
- , "");
-
- cases.add("scoped for loops with shadowing",
- \\#include <stdlib.h>
- \\int main() {
- \\ int count = 0;
- \\ for (int x = 0; x < 2; x++)
- \\ for (int x = 0; x < 2; x++)
- \\ count++;
- \\
- \\ if (count != 4) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("array value type casts properly",
- \\#include <stdlib.h>
- \\unsigned int choose[53][10];
- \\static int hash_binary(int k)
- \\{
- \\ choose[0][k] = 3;
- \\ int sum = 0;
- \\ sum += choose[0][k];
- \\ return sum;
- \\}
- \\
- \\int main() {
- \\ int s = hash_binary(4);
- \\ if (s != 3) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("array value type casts properly use +=",
- \\#include <stdlib.h>
- \\static int hash_binary(int k)
- \\{
- \\ unsigned int choose[1][1] = {{3}};
- \\ int sum = -1;
- \\ int prev = 0;
- \\ prev = sum += choose[0][0];
- \\ if (sum != 2) abort();
- \\ return sum + prev;
- \\}
- \\
- \\int main() {
- \\ int x = hash_binary(4);
- \\ if (x != 4) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("ensure array casts outside +=",
- \\#include <stdlib.h>
- \\static int hash_binary(int k)
- \\{
- \\ unsigned int choose[3] = {1, 2, 3};
- \\ int sum = -2;
- \\ int prev = sum + choose[k];
- \\ if (prev != 0) abort();
- \\ return sum + prev;
- \\}
- \\
- \\int main() {
- \\ int x = hash_binary(1);
- \\ if (x != -2) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("array cast int to uint",
- \\#include <stdlib.h>
- \\static unsigned int hash_binary(int k)
- \\{
- \\ int choose[3] = {-1, -2, 3};
- \\ unsigned int sum = 2;
- \\ sum += choose[k];
- \\ return sum;
- \\}
- \\
- \\int main() {
- \\ unsigned int x = hash_binary(1);
- \\ if (x != 0) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("assign enum to uint, no explicit cast",
- \\#include <stdlib.h>
- \\typedef enum {
- \\ ENUM_0 = 0,
- \\ ENUM_1 = 1,
- \\} my_enum_t;
- \\
- \\int main() {
- \\ my_enum_t val = ENUM_1;
- \\ unsigned int x = val;
- \\ if (x != 1) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("assign enum to int",
- \\#include <stdlib.h>
- \\typedef enum {
- \\ ENUM_0 = 0,
- \\ ENUM_1 = 1,
- \\} my_enum_t;
- \\
- \\int main() {
- \\ my_enum_t val = ENUM_1;
- \\ int x = val;
- \\ if (x != 1) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("cast enum to smaller uint",
- \\#include <stdlib.h>
- \\#include <stdint.h>
- \\typedef enum {
- \\ ENUM_0 = 0,
- \\ ENUM_257 = 257,
- \\} my_enum_t;
- \\
- \\int main() {
- \\ my_enum_t val = ENUM_257;
- \\ uint8_t x = (uint8_t)val;
- \\ if (x != (uint8_t)257) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("cast enum to smaller signed int",
- \\#include <stdlib.h>
- \\#include <stdint.h>
- \\typedef enum {
- \\ ENUM_0 = 0,
- \\ ENUM_384 = 384,
- \\} my_enum_t;
- \\
- \\int main() {
- \\ my_enum_t val = ENUM_384;
- \\ int8_t x = (int8_t)val;
- \\ if (x != (int8_t)384) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("cast negative enum to smaller signed int",
- \\#include <stdlib.h>
- \\#include <stdint.h>
- \\typedef enum {
- \\ ENUM_MINUS_1 = -1,
- \\ ENUM_384 = 384,
- \\} my_enum_t;
- \\
- \\int main() {
- \\ my_enum_t val = ENUM_MINUS_1;
- \\ int8_t x = (int8_t)val;
- \\ if (x != -1) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("cast negative enum to smaller unsigned int",
- \\#include <stdlib.h>
- \\#include <stdint.h>
- \\typedef enum {
- \\ ENUM_MINUS_1 = -1,
- \\ ENUM_384 = 384,
- \\} my_enum_t;
- \\
- \\int main() {
- \\ my_enum_t val = ENUM_MINUS_1;
- \\ uint8_t x = (uint8_t)val;
- \\ if (x != (uint8_t)-1) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("implicit enum cast in boolean expression",
- \\#include <stdlib.h>
- \\enum Foo {
- \\ FooA,
- \\ FooB,
- \\ FooC,
- \\};
- \\int main() {
- \\ int a = 0;
- \\ float b = 0;
- \\ void *c = 0;
- \\ enum Foo d = FooA;
- \\ if (a || d) abort();
- \\ if (d && b) abort();
- \\ if (c || d) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("issue #6707 cast builtin call result to opaque struct pointer",
- \\#include <stdlib.h>
- \\struct foo* make_foo(void)
- \\{
- \\ return (struct foo*)__builtin_strlen("0123456789ABCDEF");
- \\}
- \\int main(void) {
- \\ struct foo *foo_pointer = make_foo();
- \\ if (foo_pointer != (struct foo*)16) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("C built-ins",
- \\#include <stdlib.h>
- \\#include <limits.h>
- \\#include <stdbool.h>
- \\#define M_E 2.71828182845904523536
- \\#define M_PI_2 1.57079632679489661923
- \\bool check_clz(unsigned int pos) {
- \\ return (__builtin_clz(1 << pos) == (8 * sizeof(unsigned int) - pos - 1));
- \\}
- \\int main(void) {
- \\ if (__builtin_bswap16(0x0102) != 0x0201) abort();
- \\ if (__builtin_bswap32(0x01020304) != 0x04030201) abort();
- \\ if (__builtin_bswap64(0x0102030405060708) != 0x0807060504030201) abort();
- \\
- \\ if (__builtin_signbit(0.0) != 0) abort();
- \\ if (__builtin_signbitf(0.0f) != 0) abort();
- \\ if (__builtin_signbit(1.0) != 0) abort();
- \\ if (__builtin_signbitf(1.0f) != 0) abort();
- \\ if (__builtin_signbit(-1.0) != 1) abort();
- \\ if (__builtin_signbitf(-1.0f) != 1) abort();
- \\
- \\ if (__builtin_popcount(0) != 0) abort();
- \\ if (__builtin_popcount(0b1) != 1) abort();
- \\ if (__builtin_popcount(0b11) != 2) abort();
- \\ if (__builtin_popcount(0b1111) != 4) abort();
- \\ if (__builtin_popcount(0b11111111) != 8) abort();
- \\
- \\ if (__builtin_ctz(0b1) != 0) abort();
- \\ if (__builtin_ctz(0b10) != 1) abort();
- \\ if (__builtin_ctz(0b100) != 2) abort();
- \\ if (__builtin_ctz(0b10000) != 4) abort();
- \\ if (__builtin_ctz(0b100000000) != 8) abort();
- \\
- \\ if (!check_clz(0)) abort();
- \\ if (!check_clz(1)) abort();
- \\ if (!check_clz(2)) abort();
- \\ if (!check_clz(4)) abort();
- \\ if (!check_clz(8)) abort();
- \\
- \\ if (__builtin_sqrt(__builtin_sqrt(__builtin_sqrt(256))) != 2.0) abort();
- \\ if (__builtin_sqrt(__builtin_sqrt(__builtin_sqrt(256.0))) != 2.0) abort();
- \\ if (__builtin_sqrt(__builtin_sqrt(__builtin_sqrt(256.0f))) != 2.0) abort();
- \\ if (__builtin_sqrtf(__builtin_sqrtf(__builtin_sqrtf(256.0f))) != 2.0f) abort();
- \\
- \\ if (__builtin_sin(1.0) != -__builtin_sin(-1.0)) abort();
- \\ if (__builtin_sinf(1.0f) != -__builtin_sinf(-1.0f)) abort();
- \\ if (__builtin_sin(M_PI_2) != 1.0) abort();
- \\ if (__builtin_sinf(M_PI_2) != 1.0f) abort();
- \\
- \\ if (__builtin_cos(1.0) != __builtin_cos(-1.0)) abort();
- \\ if (__builtin_cosf(1.0f) != __builtin_cosf(-1.0f)) abort();
- \\ if (__builtin_cos(0.0) != 1.0) abort();
- \\ if (__builtin_cosf(0.0f) != 1.0f) abort();
- \\
- \\ if (__builtin_exp(0) != 1.0) abort();
- \\ if (__builtin_fabs(__builtin_exp(1.0) - M_E) > 0.00000001) abort();
- \\ if (__builtin_exp(0.0f) != 1.0f) abort();
- \\
- \\ if (__builtin_exp2(0) != 1.0) abort();
- \\ if (__builtin_exp2(4.0) != 16.0) abort();
- \\ if (__builtin_exp2f(0.0f) != 1.0f) abort();
- \\ if (__builtin_exp2f(4.0f) != 16.0f) abort();
- \\
- \\ if (__builtin_log(M_E) != 1.0) abort();
- \\ if (__builtin_log(1.0) != 0.0) abort();
- \\ if (__builtin_logf(1.0f) != 0.0f) abort();
- \\
- \\ if (__builtin_log2(8.0) != 3.0) abort();
- \\ if (__builtin_log2(1.0) != 0.0) abort();
- \\ if (__builtin_log2f(8.0f) != 3.0f) abort();
- \\ if (__builtin_log2f(1.0f) != 0.0f) abort();
- \\
- \\ if (__builtin_log10(1000.0) != 3.0) abort();
- \\ if (__builtin_log10(1.0) != 0.0) abort();
- \\ if (__builtin_log10f(1000.0f) != 3.0f) abort();
- \\ if (__builtin_log10f(1.0f) != 0.0f) abort();
- \\
- \\ if (__builtin_fabs(-42.0f) != 42.0) abort();
- \\ if (__builtin_fabs(-42.0) != 42.0) abort();
- \\ if (__builtin_fabs(-42) != 42.0) abort();
- \\ if (__builtin_fabsf(-42.0f) != 42.0f) abort();
- \\
- \\ if (__builtin_fabs(-42.0f) != 42.0) abort();
- \\ if (__builtin_fabs(-42.0) != 42.0) abort();
- \\ if (__builtin_fabs(-42) != 42.0) abort();
- \\ if (__builtin_fabsf(-42.0f) != 42.0f) abort();
- \\
- \\ if (__builtin_abs(42) != 42) abort();
- \\ if (__builtin_abs(-42) != 42) abort();
- \\ if (__builtin_abs(INT_MIN) != INT_MIN) abort();
- \\
- \\ if (__builtin_floor(42.9) != 42.0) abort();
- \\ if (__builtin_floor(-42.9) != -43.0) abort();
- \\ if (__builtin_floorf(42.9f) != 42.0f) abort();
- \\ if (__builtin_floorf(-42.9f) != -43.0f) abort();
- \\
- \\ if (__builtin_ceil(42.9) != 43.0) abort();
- \\ if (__builtin_ceil(-42.9) != -42) abort();
- \\ if (__builtin_ceilf(42.9f) != 43.0f) abort();
- \\ if (__builtin_ceilf(-42.9f) != -42.0f) abort();
- \\
- \\ if (__builtin_trunc(42.9) != 42.0) abort();
- \\ if (__builtin_truncf(42.9f) != 42.0f) abort();
- \\ if (__builtin_trunc(-42.9) != -42.0) abort();
- \\ if (__builtin_truncf(-42.9f) != -42.0f) abort();
- \\
- \\ if (__builtin_round(0.5) != 1.0) abort();
- \\ if (__builtin_round(-0.5) != -1.0) abort();
- \\ if (__builtin_roundf(0.5f) != 1.0f) abort();
- \\ if (__builtin_roundf(-0.5f) != -1.0f) abort();
- \\
- \\ if (__builtin_strcmp("abc", "abc") != 0) abort();
- \\ if (__builtin_strcmp("abc", "def") >= 0 ) abort();
- \\ if (__builtin_strcmp("def", "abc") <= 0) abort();
- \\
- \\ if (__builtin_strlen("this is a string") != 16) abort();
- \\
- \\ char *s = malloc(6);
- \\ __builtin_memcpy(s, "hello", 5);
- \\ s[5] = '\0';
- \\ if (__builtin_strlen(s) != 5) abort();
- \\
- \\ __builtin_memset(s, 42, __builtin_strlen(s));
- \\ if (s[0] != 42 || s[1] != 42 || s[2] != 42 || s[3] != 42 || s[4] != 42) abort();
- \\
- \\ free(s);
- \\
- \\ return 0;
- \\}
- , "");
-
- cases.add("function macro that uses builtin",
- \\#include <stdlib.h>
- \\#define FOO(x, y) (__builtin_popcount((x)) + __builtin_strlen((y)))
- \\int main() {
- \\ if (FOO(7, "hello!") != 9) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("assign bool result to int or char",
- \\#include <stdlib.h>
- \\#include <stdbool.h>
- \\bool foo() { return true; }
- \\int main() {
- \\ int x = foo();
- \\ if (x != 1) abort();
- \\ signed char c = foo();
- \\ if (c != 1) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("static K&R-style no prototype function declaration (empty parameter list)",
- \\#include <stdlib.h>
- \\static int foo() {
- \\ return 42;
- \\}
- \\int main() {
- \\ if (foo() != 42) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("K&R-style static function prototype for unused function",
- \\static int foo();
- \\int main() {
- \\ return 0;
- \\}
- , "");
-
- cases.add("K&R-style static function prototype + separate definition",
- \\#include <stdlib.h>
- \\static int foo();
- \\static int foo(int a, int b) {
- \\ return a + b;
- \\}
- \\int main() {
- \\ if (foo(40, 2) != 42) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("dollar sign in identifiers",
- \\#include <stdlib.h>
- \\#define $FOO 2
- \\#define $foo bar$
- \\#define $baz($x) ($x + $FOO)
- \\int $$$(int $x$) { return $x$ + $FOO; }
- \\int main() {
- \\ int bar$ = 42;
- \\ if ($foo != 42) abort();
- \\ if (bar$ != 42) abort();
- \\ if ($baz(bar$) != 44) abort();
- \\ if ($$$(bar$) != 44) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("Cast boolean expression result to int",
- \\#include <stdlib.h>
- \\char foo(char c) { return c; }
- \\int bar(int i) { return i; }
- \\long baz(long l) { return l; }
- \\int main() {
- \\ if (foo(1 == 2)) abort();
- \\ if (!foo(1 == 1)) abort();
- \\ if (bar(1 == 2)) abort();
- \\ if (!bar(1 == 1)) abort();
- \\ if (baz(1 == 2)) abort();
- \\ if (!baz(1 == 1)) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("Wide, UTF-16, and UTF-32 character literals",
- \\#include <wchar.h>
- \\#include <stdlib.h>
- \\int main() {
- \\ wchar_t wc = L'™';
- \\ int utf16_char = u'™';
- \\ int utf32_char = U'💯';
- \\ if (wc != 8482) abort();
- \\ if (utf16_char != 8482) abort();
- \\ if (utf32_char != 128175) abort();
- \\ unsigned char c = wc;
- \\ if (c != 0x22) abort();
- \\ c = utf32_char;
- \\ if (c != 0xaf) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("Variadic function call",
- \\#define _NO_CRT_STDIO_INLINE 1
- \\#include <stdio.h>
- \\int main(void) {
- \\ printf("%d %d\n", 1, 2);
- \\ return 0;
- \\}
- , "1 2" ++ nl);
-
- cases.add("multi-character character constant",
- \\#include <stdlib.h>
- \\int main(void) {
- \\ int foo = 'abcd';
- \\ switch (foo) {
- \\ case 'abcd': break;
- \\ default: abort();
- \\ }
- \\ return 0;
- \\}
- , "");
-
- cases.add("Array initializers (string literals, incomplete arrays)",
- \\#include <stdlib.h>
- \\#include <string.h>
- \\extern int foo[];
- \\int global_arr[] = {1, 2, 3};
- \\char global_string[] = "hello";
- \\int main(int argc, char *argv[]) {
- \\ if (global_arr[2] != 3) abort();
- \\ if (strlen(global_string) != 5) abort();
- \\ const char *const_str = "hello";
- \\ if (strcmp(const_str, "hello") != 0) abort();
- \\ char empty_str[] = "";
- \\ if (strlen(empty_str) != 0) abort();
- \\ char hello[] = "hello";
- \\ if (strlen(hello) != 5 || sizeof(hello) != 6) abort();
- \\ int empty[] = {};
- \\ if (sizeof(empty) != 0) abort();
- \\ int bar[] = {42};
- \\ if (bar[0] != 42) abort();
- \\ bar[0] = 43;
- \\ if (bar[0] != 43) abort();
- \\ int baz[] = {1, [42] = 123, 456};
- \\ if (baz[42] != 123 || baz[43] != 456) abort();
- \\ if (sizeof(baz) != sizeof(int) * 44) abort();
- \\ const char *const names[] = {"first", "second", "third"};
- \\ if (strcmp(names[2], "third") != 0) abort();
- \\ char catted_str[] = "abc" "def";
- \\ if (strlen(catted_str) != 6 || sizeof(catted_str) != 7) abort();
- \\ char catted_trunc_str[2] = "abc" "def";
- \\ if (sizeof(catted_trunc_str) != 2 || catted_trunc_str[0] != 'a' || catted_trunc_str[1] != 'b') abort();
- \\ char big_array_utf8lit[10] = "💯";
- \\ if (strcmp(big_array_utf8lit, "💯") != 0 || big_array_utf8lit[9] != 0) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("Wide, UTF-16, and UTF-32 string literals",
- \\#include <stdlib.h>
- \\#include <stdint.h>
- \\#include <wchar.h>
- \\int main(void) {
- \\ const wchar_t *wide_str = L"wide";
- \\ const wchar_t wide_hello[] = L"hello";
- \\ if (wcslen(wide_str) != 4) abort();
- \\ if (wcslen(L"literal") != 7) abort();
- \\ if (wcscmp(wide_hello, L"hello") != 0) abort();
- \\
- \\ const uint16_t *u16_str = u"wide";
- \\ const uint16_t u16_hello[] = u"hello";
- \\ if (u16_str[3] != u'e' || u16_str[4] != 0) abort();
- \\ if (u16_hello[4] != u'o' || u16_hello[5] != 0) abort();
- \\
- \\ const uint32_t *u32_str = U"wide";
- \\ const uint32_t u32_hello[] = U"hello";
- \\ if (u32_str[3] != U'e' || u32_str[4] != 0) abort();
- \\ if (u32_hello[4] != U'o' || u32_hello[5] != 0) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("Address of function is no-op",
- \\#include <stdlib.h>
- \\#include <stdbool.h>
- \\typedef int (*myfunc)(int);
- \\int a(int arg) { return arg + 1;}
- \\int b(int arg) { return arg + 2;}
- \\int caller(myfunc fn, int arg) {
- \\ return fn(arg);
- \\}
- \\int main() {
- \\ myfunc arr[3] = {&a, &b, a};
- \\ myfunc foo = a;
- \\ myfunc bar = &(a);
- \\ if (foo != bar) abort();
- \\ if (arr[0] == arr[1]) abort();
- \\ if (arr[0] != arr[2]) abort();
- \\ if (caller(b, 40) != 42) abort();
- \\ if (caller(&b, 40) != 42) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("Obscure ways of calling functions; issue #4124",
- \\#include <stdlib.h>
- \\static int add(int a, int b) {
- \\ return a + b;
- \\}
- \\typedef int (*adder)(int, int);
- \\typedef void (*funcptr)(void);
- \\int main() {
- \\ if ((add)(1, 2) != 3) abort();
- \\ if ((&add)(1, 2) != 3) abort();
- \\ if (add(3, 1) != 4) abort();
- \\ if ((*add)(2, 3) != 5) abort();
- \\ if ((**add)(7, -1) != 6) abort();
- \\ if ((***add)(-2, 9) != 7) abort();
- \\
- \\ int (*ptr)(int a, int b);
- \\ ptr = add;
- \\
- \\ if (ptr(1, 2) != 3) abort();
- \\ if ((*ptr)(3, 1) != 4) abort();
- \\ if ((**ptr)(2, 3) != 5) abort();
- \\ if ((***ptr)(7, -1) != 6) abort();
- \\ if ((****ptr)(-2, 9) != 7) abort();
- \\
- \\ funcptr addr1 = (funcptr)(add);
- \\ funcptr addr2 = (funcptr)(&add);
- \\
- \\ if (addr1 != addr2) abort();
- \\ if (((int(*)(int, int))addr1)(1, 2) != 3) abort();
- \\ if (((adder)addr2)(1, 2) != 3) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("Return boolean expression as int; issue #6215",
- \\#include <stdlib.h>
- \\#include <stdbool.h>
- \\bool actual_bool(void) { return 4 - 1 < 4;}
- \\char char_bool_ret(void) { return 0 || 1; }
- \\short short_bool_ret(void) { return 0 < 1; }
- \\int int_bool_ret(void) { return 1 && 1; }
- \\long long_bool_ret(void) { return !(0 > 1); }
- \\static int GLOBAL = 1;
- \\int nested_scopes(int a, int b) {
- \\ if (a == 1) {
- \\ int target = 1;
- \\ return b == target;
- \\ } else {
- \\ int target = 2;
- \\ if (b == target) {
- \\ return GLOBAL == 1;
- \\ }
- \\ return target == 2;
- \\ }
- \\}
- \\int main(void) {
- \\ if (!actual_bool()) abort();
- \\ if (!char_bool_ret()) abort();
- \\ if (!short_bool_ret()) abort();
- \\ if (!int_bool_ret()) abort();
- \\ if (!long_bool_ret()) abort();
- \\ if (!nested_scopes(1, 1)) abort();
- \\ if (nested_scopes(1, 2)) abort();
- \\ if (!nested_scopes(0, 2)) abort();
- \\ if (!nested_scopes(0, 3)) abort();
- \\ return 1 != 1;
- \\}
- , "");
-
- cases.add("Comma operator should create new scope; issue #7989",
- \\#include <stdlib.h>
- \\#include <stdio.h>
- \\int main(void) {
- \\ if (1 || (abort(), 1)) {}
- \\ if (0 && (1, printf("do not print\n"))) {}
- \\ int x = 0;
- \\ x = (x = 3, 4, x + 1);
- \\ if (x != 4) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("Use correct break label for statement expression in nested scope",
- \\#include <stdlib.h>
- \\int main(void) {
- \\ int x = ({1, ({2; 3;});});
- \\ if (x != 3) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("pointer difference: scalar array w/ size truncation or negative result. Issue #7216",
- \\#include <stdlib.h>
- \\#include <stddef.h>
- \\#define SIZE 10
- \\int main() {
- \\ int foo[SIZE];
- \\ int *start = &foo[0];
- \\ int *one_past_end = start + SIZE;
- \\ ptrdiff_t diff = one_past_end - start;
- \\ char diff_char = one_past_end - start;
- \\ if (diff != SIZE || diff_char != SIZE) abort();
- \\ diff = start - one_past_end;
- \\ if (diff != -SIZE) abort();
- \\ if (one_past_end - foo != SIZE) abort();
- \\ if ((one_past_end - 1) - foo != SIZE - 1) abort();
- \\ if ((start + 1) - foo != 1) abort();
- \\ return 0;
- \\}
- , "");
-
- // C standard: if the expression P points either to an element of an array object or one
- // past the last element of an array object, and the expression Q points to the last
- // element of the same array object, the expression ((Q)+1)-(P) has the same value as
- // ((Q)-(P))+1 and as -((P)-((Q)+1)), and has the value zero if the expression P points
- // one past the last element of the array object, even though the expression (Q)+1
- // does not point to an element of the array object
- cases.add("pointer difference: C standard edge case",
- \\#include <stdlib.h>
- \\#include <stddef.h>
- \\#define SIZE 10
- \\int main() {
- \\ int foo[SIZE];
- \\ int *start = &foo[0];
- \\ int *P = start + SIZE;
- \\ int *Q = &foo[SIZE - 1];
- \\ if ((Q + 1) - P != 0) abort();
- \\ if ((Q + 1) - P != (Q - P) + 1) abort();
- \\ if ((Q + 1) - P != -(P - (Q + 1))) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("pointer difference: unary operators",
- \\#include <stdlib.h>
- \\int main() {
- \\ int foo[10];
- \\ int *x = &foo[1];
- \\ const int *y = &foo[5];
- \\ if (y - x++ != 4) abort();
- \\ if (y - x != 3) abort();
- \\ if (y - ++x != 2) abort();
- \\ if (y - x-- != 2) abort();
- \\ if (y - x != 3) abort();
- \\ if (y - --x != 4) abort();
- \\ if (y - &foo[0] != 5) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("pointer difference: struct array with padding",
- \\#include <stdlib.h>
- \\#include <stddef.h>
- \\#define SIZE 10
- \\typedef struct my_struct {
- \\ int x;
- \\ char c;
- \\ int y;
- \\} my_struct_t;
- \\int main() {
- \\ my_struct_t foo[SIZE];
- \\ my_struct_t *start = &foo[0];
- \\ my_struct_t *one_past_end = start + SIZE;
- \\ ptrdiff_t diff = one_past_end - start;
- \\ int diff_int = one_past_end - start;
- \\ if (diff != SIZE || diff_int != SIZE) abort();
- \\ diff = start - one_past_end;
- \\ if (diff != -SIZE) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("pointer difference: array of function pointers",
- \\#include <stdlib.h>
- \\int a(void) { return 1;}
- \\int b(void) { return 2;}
- \\int c(void) { return 3;}
- \\typedef int (*myfunc)(void);
- \\int main() {
- \\ myfunc arr[] = {a, b, c, a, b, c};
- \\ myfunc *f1 = &arr[1];
- \\ myfunc *f4 = &arr[4];
- \\ if (f4 - f1 != 3) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("typeof operator",
- \\#include <stdlib.h>
- \\static int FOO = 42;
- \\typedef typeof(FOO) foo_type;
- \\typeof(foo_type) myfunc(typeof(FOO) x) { return (typeof(FOO)) x; }
- \\int main(void) {
- \\ int x = FOO;
- \\ typeof(x) y = x;
- \\ foo_type z = y;
- \\ if (x != y) abort();
- \\ if (myfunc(z) != x) abort();
- \\
- \\ const char *my_string = "bar";
- \\ typeof (typeof (my_string)[4]) string_arr = {"a","b","c","d"};
- \\ if (string_arr[0][0] != 'a' || string_arr[3][0] != 'd') abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("offsetof",
- \\#include <stddef.h>
- \\#include <stdlib.h>
- \\#define container_of(ptr, type, member) ({ \
- \\ const typeof( ((type *)0)->member ) *__mptr = (ptr); \
- \\ (type *)( (char *)__mptr - offsetof(type,member) );})
- \\typedef struct {
- \\ int i;
- \\ struct { int x; char y; int z; } s;
- \\ float f;
- \\} container;
- \\int main(void) {
- \\ if (offsetof(container, i) != 0) abort();
- \\ if (offsetof(container, s) <= offsetof(container, i)) abort();
- \\ if (offsetof(container, f) <= offsetof(container, s)) abort();
- \\
- \\ container my_container;
- \\ typeof(my_container.s) *inner_member_pointer = &my_container.s;
- \\ float *float_member_pointer = &my_container.f;
- \\ int *anon_member_pointer = &my_container.s.z;
- \\ container *my_container_p;
- \\
- \\ my_container_p = container_of(inner_member_pointer, container, s);
- \\ if (my_container_p != &my_container) abort();
- \\
- \\ my_container_p = container_of(float_member_pointer, container, f);
- \\ if (my_container_p != &my_container) abort();
- \\
- \\ if (container_of(anon_member_pointer, typeof(my_container.s), z) != inner_member_pointer) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("handle assert.h",
- \\#include <assert.h>
- \\int main() {
- \\ int x = 1;
- \\ int *xp = &x;
- \\ assert(1);
- \\ assert(x != 0);
- \\ assert(xp);
- \\ assert(*xp);
- \\ return 0;
- \\}
- , "");
-
- cases.add("NDEBUG disables assert",
- \\#define NDEBUG
- \\#include <assert.h>
- \\int main() {
- \\ assert(0);
- \\ assert(NULL);
- \\ return 0;
- \\}
- , "");
-
- cases.add("pointer arithmetic with signed operand",
- \\#include <stdlib.h>
- \\int main() {
- \\ int array[10];
- \\ int *x = &array[5];
- \\ int *y;
- \\ int idx = 0;
- \\ y = x + ++idx;
- \\ if (y != x + 1 || y != &array[6]) abort();
- \\ y = idx + x;
- \\ if (y != x + 1 || y != &array[6]) abort();
- \\ y = x - idx;
- \\ if (y != x - 1 || y != &array[4]) abort();
- \\
- \\ idx = 0;
- \\ y = --idx + x;
- \\ if (y != x - 1 || y != &array[4]) abort();
- \\ y = idx + x;
- \\ if (y != x - 1 || y != &array[4]) abort();
- \\ y = x - idx;
- \\ if (y != x + 1 || y != &array[6]) abort();
- \\
- \\ idx = 1;
- \\ x += idx;
- \\ if (x != &array[6]) abort();
- \\ x -= idx;
- \\ if (x != &array[5]) abort();
- \\ y = (x += idx);
- \\ if (y != x || y != &array[6]) abort();
- \\ y = (x -= idx);
- \\ if (y != x || y != &array[5]) abort();
- \\
- \\ if (array + idx != &array[1] || array + 1 != &array[1]) abort();
- \\ idx = -1;
- \\ if (array - idx != &array[1]) abort();
- \\
- \\ return 0;
- \\}
- , "");
-
- cases.add("Compound literals",
- \\#include <stdlib.h>
- \\struct Foo {
- \\ int a;
- \\ char b[2];
- \\ float c;
- \\};
- \\int main() {
- \\ struct Foo foo;
- \\ int x = 1, y = 2;
- \\ foo = (struct Foo) {x + y, {'a', 'b'}, 42.0f};
- \\ if (foo.a != x + y || foo.b[0] != 'a' || foo.b[1] != 'b' || foo.c != 42.0f) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("Generic selections",
- \\#include <stdlib.h>
- \\#include <string.h>
- \\#include <stdint.h>
- \\#define my_generic_fn(X) _Generic((X), \
- \\ int: abs, \
- \\ char *: strlen, \
- \\ size_t: malloc, \
- \\ default: free \
- \\)(X)
- \\#define my_generic_val(X) _Generic((X), \
- \\ int: 1, \
- \\ const char *: "bar" \
- \\)
- \\int main(void) {
- \\ if (my_generic_val(100) != 1) abort();
- \\
- \\ const char *foo = "foo";
- \\ const char *bar = my_generic_val(foo);
- \\ if (strcmp(bar, "bar") != 0) abort();
- \\
- \\ if (my_generic_fn(-42) != 42) abort();
- \\ if (my_generic_fn("hello") != 5) abort();
- \\
- \\ size_t size = 8192;
- \\ uint8_t *mem = my_generic_fn(size);
- \\ memset(mem, 42, size);
- \\ if (mem[size - 1] != 42) abort();
- \\ my_generic_fn(mem);
- \\
- \\ return 0;
- \\}
- , "");
-
- // See __builtin_alloca_with_align comment in std.zig.c_builtins
- cases.add("use of unimplemented builtin in unused function does not prevent compilation",
- \\#include <stdlib.h>
- \\void unused() {
- \\ __builtin_alloca_with_align(1, 8);
- \\}
- \\int main(void) {
- \\ if (__builtin_sqrt(1.0) != 1.0) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("convert single-statement bodies into blocks for if/else/for/while. issue #8159",
- \\#include <stdlib.h>
- \\int foo() { return 1; }
- \\int main(void) {
- \\ int i = 0;
- \\ if (i == 0) if (i == 0) if (i != 0) i = 1;
- \\ if (i != 0) i = 1; else if (i == 0) if (i == 0) i += 1;
- \\ for (; i < 10;) for (; i < 10;) i++;
- \\ while (i == 100) while (i == 100) foo();
- \\ if (0) do do "string"; while(1); while(1);
- \\ return 0;
- \\}
- , "");
-
- cases.add("cast RHS of compound assignment if necessary, unused result",
- \\#include <stdlib.h>
- \\int main(void) {
- \\ signed short val = -1;
- \\ val += 1; if (val != 0) abort();
- \\ val -= 1; if (val != -1) abort();
- \\ val *= 2; if (val != -2) abort();
- \\ val /= 2; if (val != -1) abort();
- \\ val %= 2; if (val != -1) abort();
- \\ val <<= 1; if (val != -2) abort();
- \\ val >>= 1; if (val != -1) abort();
- \\ val += 100000000; // compile error if @truncate() not inserted
- \\ unsigned short uval = 1;
- \\ uval += 1; if (uval != 2) abort();
- \\ uval -= 1; if (uval != 1) abort();
- \\ uval *= 2; if (uval != 2) abort();
- \\ uval /= 2; if (uval != 1) abort();
- \\ uval %= 2; if (uval != 1) abort();
- \\ uval <<= 1; if (uval != 2) abort();
- \\ uval >>= 1; if (uval != 1) abort();
- \\ uval += 100000000; // compile error if @truncate() not inserted
- \\}
- , "");
-
- cases.add("cast RHS of compound assignment if necessary, used result",
- \\#include <stdlib.h>
- \\int main(void) {
- \\ signed short foo;
- \\ signed short val = -1;
- \\ foo = (val += 1); if (foo != 0) abort();
- \\ foo = (val -= 1); if (foo != -1) abort();
- \\ foo = (val *= 2); if (foo != -2) abort();
- \\ foo = (val /= 2); if (foo != -1) abort();
- \\ foo = (val %= 2); if (foo != -1) abort();
- \\ foo = (val <<= 1); if (foo != -2) abort();
- \\ foo = (val >>= 1); if (foo != -1) abort();
- \\ foo = (val += 100000000); // compile error if @truncate() not inserted
- \\ unsigned short ufoo;
- \\ unsigned short uval = 1;
- \\ ufoo = (uval += 1); if (ufoo != 2) abort();
- \\ ufoo = (uval -= 1); if (ufoo != 1) abort();
- \\ ufoo = (uval *= 2); if (ufoo != 2) abort();
- \\ ufoo = (uval /= 2); if (ufoo != 1) abort();
- \\ ufoo = (uval %= 2); if (ufoo != 1) abort();
- \\ ufoo = (uval <<= 1); if (ufoo != 2) abort();
- \\ ufoo = (uval >>= 1); if (ufoo != 1) abort();
- \\ ufoo = (uval += 100000000); // compile error if @truncate() not inserted
- \\}
- , "");
-
- cases.add("break from switch statement. Issue #8387",
- \\#include <stdlib.h>
- \\int switcher(int x) {
- \\ switch (x) {
- \\ case 0: // no braces
- \\ x += 1;
- \\ break;
- \\ case 1: // conditional break
- \\ if (x == 1) {
- \\ x += 1;
- \\ break;
- \\ }
- \\ x += 100;
- \\ case 2: { // braces with fallthrough
- \\ x += 1;
- \\ }
- \\ case 3: // fallthrough to return statement
- \\ x += 1;
- \\ case 42: { // random out of order case
- \\ x += 1;
- \\ return x;
- \\ }
- \\ case 4: { // break within braces
- \\ x += 1;
- \\ break;
- \\ }
- \\ case 5:
- \\ x += 1; // fallthrough to default
- \\ default:
- \\ x += 1;
- \\ }
- \\ return x;
- \\}
- \\int main(void) {
- \\ int expected[] = {1, 2, 5, 5, 5, 7, 7};
- \\ for (int i = 0; i < sizeof(expected) / sizeof(int); i++) {
- \\ int res = switcher(i);
- \\ if (res != expected[i]) abort();
- \\ }
- \\ if (switcher(42) != 43) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("Cast to enum from larger integral type. Issue #6011",
- \\#include <stdint.h>
- \\#include <stdlib.h>
- \\enum Foo { A, B, C };
- \\static inline enum Foo do_stuff(void) {
- \\ int64_t i = 1;
- \\ return (enum Foo)i;
- \\}
- \\int main(void) {
- \\ if (do_stuff() != B) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("Render array LHS as grouped node if necessary",
- \\#include <stdlib.h>
- \\int main(void) {
- \\ int arr[] = {40, 41, 42, 43};
- \\ if ((arr + 1)[1] != 42) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("typedef with multiple names",
- \\#include <stdlib.h>
- \\typedef struct {
- \\ char field;
- \\} a_t, b_t;
- \\
- \\int main(void) {
- \\ a_t a = { .field = 42 };
- \\ b_t b = a;
- \\ if (b.field != 42) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("__cleanup__ attribute",
- \\#include <stdlib.h>
- \\static int cleanup_count = 0;
- \\void clean_up(int *final_value) {
- \\ if (*final_value != cleanup_count++) abort();
- \\}
- \\void doit(void) {
- \\ int a __attribute__ ((__cleanup__(clean_up))) __attribute__ ((unused)) = 2;
- \\ int b __attribute__ ((__cleanup__(clean_up))) __attribute__ ((unused)) = 1;
- \\ int c __attribute__ ((__cleanup__(clean_up))) __attribute__ ((unused)) = 0;
- \\}
- \\int main(void) {
- \\ doit();
- \\ if (cleanup_count != 3) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("enum used as boolean expression",
- \\#include <stdlib.h>
- \\enum FOO {BAR, BAZ};
- \\int main(void) {
- \\ enum FOO x = BAR;
- \\ if (x) abort();
- \\ if (!BAZ) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("Flexible arrays",
- \\#include <stdlib.h>
- \\#include <stdint.h>
- \\typedef struct { char foo; int bar; } ITEM;
- \\typedef struct { size_t count; ITEM items[]; } ITEM_LIST;
- \\typedef struct { unsigned char count; int items[]; } INT_LIST;
- \\#define SIZE 10
- \\int main(void) {
- \\ ITEM_LIST *list = malloc(sizeof(ITEM_LIST) + SIZE * sizeof(ITEM));
- \\ for (int i = 0; i < SIZE; i++) list->items[i] = (ITEM) {.foo = i, .bar = i + 1};
- \\ const ITEM_LIST *const c_list = list;
- \\ for (int i = 0; i < SIZE; i++) if (c_list->items[i].foo != i || c_list->items[i].bar != i + 1) abort();
- \\ INT_LIST *int_list = malloc(sizeof(INT_LIST) + SIZE * sizeof(int));
- \\ for (int i = 0; i < SIZE; i++) int_list->items[i] = i;
- \\ const INT_LIST *const c_int_list = int_list;
- \\ const int *const ints = int_list->items;
- \\ for (int i = 0; i < SIZE; i++) if (ints[i] != i) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("Flexible array with typedefed flexible item, issue #16838",
- \\#include <stdlib.h>
- \\#include <assert.h>
- \\typedef int MARKER[0];
- \\typedef struct { int x; MARKER y; } Flexible;
- \\#define SIZE 10
- \\int main(void) {
- \\ Flexible *flex = malloc(sizeof(Flexible) + SIZE * sizeof(int));
- \\ for (int i = 0; i < SIZE; i++) {
- \\ flex->y[i] = i;
- \\ }
- \\ for (int i = 0; i < SIZE; i++) {
- \\ assert(flex->y[i] == i);
- \\ }
- \\ return 0;
- \\}
- , "");
-
- cases.add("enum with value that fits in c_uint but not c_int, issue #8003",
- \\#include <stdlib.h>
- \\enum my_enum {
- \\ FORCE_UINT = 0xffffffff
- \\};
- \\int main(void) {
- \\ if(FORCE_UINT != 0xffffffff) abort();
- \\}
- , "");
-
- cases.add("block-scope static variable shadows function parameter. Issue #8208",
- \\#include <stdlib.h>
- \\int func1(int foo) { return foo + 1; }
- \\int func2(void) {
- \\ static int foo = 5;
- \\ return foo++;
- \\}
- \\int main(void) {
- \\ if (func1(42) != 43) abort();
- \\ if (func2() != 5) abort();
- \\ if (func2() != 6) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("nested same-name static locals",
- \\#include <stdlib.h>
- \\int func(int val) {
- \\ static int foo;
- \\ if (foo != val) abort();
- \\ {
- \\ foo += 1;
- \\ static int foo = 2;
- \\ if (foo != val + 2) abort();
- \\ foo += 1;
- \\ }
- \\ return foo;
- \\}
- \\int main(void) {
- \\ int foo = 1;
- \\ if (func(0) != 1) abort();
- \\ if (func(1) != 2) abort();
- \\ if (func(2) != 3) abort();
- \\ if (foo != 1) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("Enum constants are assigned correct type. Issue #9153",
- \\enum A { A0, A1=0xFFFFFFFF };
- \\enum B { B0=-1, B1=0xFFFFFFFF };
- \\enum C { C0=-1, C1=0 };
- \\enum D { D0, D1=0xFFFFFFFFFFL };
- \\enum E { E0=-1, E1=0xFFFFFFFFFFL };
- \\int main(void) {
- \\ signed char a0 = A0, a1 = A1;
- \\ signed char b0 = B0, b1 = B1;
- \\ signed char c0 = C0, c1 = C1;
- \\ signed char d0 = D0, d1 = D1;
- \\ signed char e0 = E0, e1 = E1;
- \\ return 0;
- \\}
- , "");
-
- cases.add("Enum constant matches enum name; multiple enumerations with same value",
- \\#include <stdlib.h>
- \\enum FOO {
- \\ FOO = 1,
- \\ BAR = 2,
- \\ BAZ = 1,
- \\};
- \\int main(void) {
- \\ enum FOO x = BAZ;
- \\ if (x != 1) abort();
- \\ if (x != BAZ) abort();
- \\ if (x != FOO) abort();
- \\}
- , "");
-
- cases.add("Scoped enums",
- \\#include <stdlib.h>
- \\int main(void) {
- \\ enum Foo { A, B, C };
- \\ enum Foo a = B;
- \\ if (a != B) abort();
- \\ if (a != 1) abort();
- \\ {
- \\ enum Foo { A = 5, B = 6, C = 7 };
- \\ enum Foo a = B;
- \\ if (a != B) abort();
- \\ if (a != 6) abort();
- \\ }
- \\ if (a != B) abort();
- \\ if (a != 1) abort();
- \\}
- , "");
-
- cases.add("Underscore identifiers",
- \\#include <stdlib.h>
- \\int _ = 10;
- \\typedef struct { int _; } S;
- \\int main(void) {
- \\ if (_ != 10) abort();
- \\ S foo = { ._ = _ };
- \\ if (foo._ != _) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("__builtin_choose_expr (unchosen expression is not evaluated)",
- \\#include <stdlib.h>
- \\int main(void) {
- \\ int x = 0.0;
- \\ int y = 0.0;
- \\ int res;
- \\ res = __builtin_choose_expr(1, 1, x / y);
- \\ if (res != 1) abort();
- \\ res = __builtin_choose_expr(0, x / y, 2);
- \\ if (res != 2) abort();
- \\ return 0;
- \\}
- , "");
-
- // TODO: add isnan check for long double once bitfield support is added
- // (needed for x86_64-windows-gnu)
- // TODO: add isinf check for long double once std.math.isInf supports c_longdouble
- cases.add("NAN and INFINITY",
- \\#include <math.h>
- \\#include <stdint.h>
- \\#include <stdlib.h>
- \\union uf { uint32_t u; float f; };
- \\#define CHECK_NAN(STR, VAL) { \
- \\ union uf unpack = {.f = __builtin_nanf(STR)}; \
- \\ if (!isnan(unpack.f)) abort(); \
- \\ if (unpack.u != VAL) abort(); \
- \\}
- \\int main(void) {
- \\ float f_nan = NAN;
- \\ if (!isnan(f_nan)) abort();
- \\ double d_nan = NAN;
- \\ if (!isnan(d_nan)) abort();
- \\ CHECK_NAN("0", 0x7FC00000);
- \\ CHECK_NAN("", 0x7FC00000);
- \\ CHECK_NAN("1", 0x7FC00001);
- \\ CHECK_NAN("0x7FC00000", 0x7FC00000);
- \\ CHECK_NAN("0x7FC0000F", 0x7FC0000F);
- \\ CHECK_NAN("0x7FC000F0", 0x7FC000F0);
- \\ CHECK_NAN("0x7FC00F00", 0x7FC00F00);
- \\ CHECK_NAN("0x7FC0F000", 0x7FC0F000);
- \\ CHECK_NAN("0x7FCF0000", 0x7FCF0000);
- \\ CHECK_NAN("0xFFFFFFFF", 0x7FFFFFFF);
- \\ float f_inf = INFINITY;
- \\ if (!isinf(f_inf)) abort();
- \\ double d_inf = INFINITY;
- \\ if (!isinf(d_inf)) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("signed array subscript. Issue #8556",
- \\#include <stdint.h>
- \\#include <stdlib.h>
- \\#define TEST_NEGATIVE(type) { type x = -1; if (ptr[x] != 42) abort(); }
- \\#define TEST_UNSIGNED(type) { type x = 2; if (arr[x] != 42) abort(); }
- \\int main(void) {
- \\ int arr[] = {40, 41, 42, 43};
- \\ int *ptr = arr + 3;
- \\ if (ptr[-1] != 42) abort();
- \\ TEST_NEGATIVE(int);
- \\ TEST_NEGATIVE(long);
- \\ TEST_NEGATIVE(long long);
- \\ TEST_NEGATIVE(int64_t);
- \\ TEST_NEGATIVE(__int128);
- \\ TEST_UNSIGNED(unsigned);
- \\ TEST_UNSIGNED(unsigned long);
- \\ TEST_UNSIGNED(unsigned long long);
- \\ TEST_UNSIGNED(uint64_t);
- \\ TEST_UNSIGNED(size_t);
- \\ TEST_UNSIGNED(unsigned __int128);
- \\ return 0;
- \\}
- , "");
-
- cases.add("Ensure side-effects only evaluated once for signed array indices",
- \\#include <stdlib.h>
- \\int main(void) {
- \\ int foo[] = {1, 2, 3, 4};
- \\ int *p = foo;
- \\ int idx = 1;
- \\ if ((++p)[--idx] != 2) abort();
- \\ if (p != foo + 1) abort();
- \\ if (idx != 0) abort();
- \\ if ((p++)[idx++] != 2) abort();
- \\ if (p != foo + 2) abort();
- \\ if (idx != 1) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("Allow non-const char* string literals. Issue #9126",
- \\#include <stdlib.h>
- \\int func(char *x) { return x[0]; }
- \\struct S { char *member; };
- \\struct S global_struct = { .member = "global" };
- \\char *g = "global";
- \\int main(void) {
- \\ if (g[0] != 'g') abort();
- \\ if (global_struct.member[0] != 'g') abort();
- \\ char *string = "hello";
- \\ if (string[0] != 'h') abort();
- \\ struct S s = {.member = "hello"};
- \\ if (s.member[0] != 'h') abort();
- \\ if (func("foo") != 'f') abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("Ensure while loop under an if doesn't steal the else. Issue #9953",
- \\#include <stdio.h>
- \\void doWork(int id) { }
- \\int reallyDelete(int id) { printf("deleted %d\n", id); return 1; }
- \\int process(int id, int n, int delete) {
- \\ if(!delete)
- \\ while(n-- > 0) doWork(id);
- \\ else
- \\ return reallyDelete(id);
- \\ return 0;
- \\}
- \\int main(void) {
- \\ process(99, 3, 0);
- \\ return 0;
- \\}
- , "");
-
- cases.add("Remainder operator with negative integers. Issue #10176",
- \\#include <stdlib.h>
- \\int main(void) {
- \\ int denominator = -2;
- \\ int numerator = 5;
- \\ if (numerator % denominator != 1) abort();
- \\ numerator = -5; denominator = 2;
- \\ if (numerator % denominator != -1) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("Boolean expression coerced to int. Issue #10175",
- \\#include <stdlib.h>
- \\int sign(int v) {
- \\ return -(v < 0);
- \\}
- \\int main(void) {
- \\ if (sign(-5) != -1) abort();
- \\ if (sign(5) != 0) abort();
- \\ if (sign(0) != 0) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("Typedef'ed void used as return type. Issue #10356",
- \\typedef void V;
- \\V foo(V *f) {}
- \\int main(void) {
- \\ int x = 0;
- \\ foo(&x);
- \\ return 0;
- \\}
- , "");
-
- cases.add("Zero-initialization of global union. Issue #10797",
- \\#include <stdlib.h>
- \\union U { int x; double y; };
- \\union U u;
- \\int main(void) {
- \\ if (u.x != 0) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("Cast-to-union. Issue #10955",
- \\#include <stdlib.h>
- \\struct S { int x; };
- \\union U {
- \\ long l;
- \\ double d;
- \\ struct S s;
- \\};
- \\union U bar(union U u) { return u; }
- \\int main(void) {
- \\ union U u = (union U) 42L;
- \\ if (u.l != 42L) abort();
- \\ u = (union U) 2.0;
- \\ if (u.d != 2.0) abort();
- \\ u = bar((union U)4.0);
- \\ if (u.d != 4.0) abort();
- \\ u = (union U)(struct S){ .x = 5 };
- \\ if (u.s.x != 5) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("Nested comma operator in macro. Issue #11040",
- \\#include <stdlib.h>
- \\#define FOO (1, (2, 3))
- \\int main(void) {
- \\ int x = FOO;
- \\ if (x != 3) abort();
- \\ return 0;
- \\}
- , "");
-
- // The C standard does not require function pointers to be convertible to any integer type.
- // However, POSIX requires that function pointers have the same representation as `void *`
- // so that dlsym() can work
- cases.add("Function to integral",
- \\#include <stdint.h>
- \\int main(void) {
- \\#if defined(__UINTPTR_MAX__) && __has_include(<unistd.h>)
- \\ uintptr_t x = (uintptr_t)main;
- \\#endif
- \\ return 0;
- \\}
- , "");
-
- cases.add("Closure over local in typeof",
- \\#include <stdlib.h>
- \\int main(void) {
- \\ int x = 123;
- \\ union { typeof(x) val; } u = { x };
- \\ if (u.val != 123) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("struct without global declaration does not conflict with local variable name",
- \\#include <stdlib.h>
- \\static void foo(struct foobar *unused) {}
- \\int main(void) {
- \\ int struct_foobar = 123;
- \\ if (struct_foobar != 123) abort();
- \\ int foobar = 456;
- \\ if (foobar != 456) abort();
- \\ return 0;
- \\}
- , "");
-
- cases.add("struct without global declaration does not conflict with global variable name",
- \\#include <stdlib.h>
- \\static void foo(struct foobar *unused) {}
- \\static int struct_foobar = 123;
- \\static int foobar = 456;
- \\int main(void) {
- \\ if (struct_foobar != 123) abort();
- \\ if (foobar != 456) abort();
- \\ return 0;
- \\}
- , "");
-}
test/tests.zig
@@ -7,14 +7,10 @@ const Step = std.Build.Step;
// Cases
const stack_traces = @import("stack_traces.zig");
-const translate_c = @import("translate_c.zig");
-const run_translated_c = @import("run_translated_c.zig");
const llvm_ir = @import("llvm_ir.zig");
const libc = @import("libc.zig");
// Implementations
-pub const TranslateCContext = @import("src/TranslateC.zig");
-pub const RunTranslatedCContext = @import("src/RunTranslatedC.zig");
pub const StackTracesContext = @import("src/StackTrace.zig");
pub const DebuggerContext = @import("src/Debugger.zig");
pub const LlvmIrContext = @import("src/LlvmIr.zig");
@@ -1901,7 +1897,6 @@ pub fn addStandaloneTests(
enable_macos_sdk: bool,
enable_ios_sdk: bool,
enable_symlinks_windows: bool,
- skip_translate_c: bool,
) *Step {
const step = b.step("test-standalone", "Run the standalone tests");
if (compilerHasPackageManager(b)) {
@@ -1914,7 +1909,6 @@ pub fn addStandaloneTests(
.simple_skip_release_safe = mem.indexOfScalar(OptimizeMode, optimize_modes, .ReleaseSafe) == null,
.simple_skip_release_fast = mem.indexOfScalar(OptimizeMode, optimize_modes, .ReleaseFast) == null,
.simple_skip_release_small = mem.indexOfScalar(OptimizeMode, optimize_modes, .ReleaseSmall) == null,
- .skip_translate_c = skip_translate_c,
});
const test_cases_dep_step = test_cases_dep.builder.default_step;
test_cases_dep_step.name = b.dupe(test_cases_dep_name);
@@ -2155,42 +2149,6 @@ pub fn addCliTests(b: *std.Build) *Step {
return step;
}
-pub fn addTranslateCTests(
- b: *std.Build,
- parent_step: *std.Build.Step,
- test_filters: []const []const u8,
- test_target_filters: []const []const u8,
-) void {
- const cases = b.allocator.create(TranslateCContext) catch @panic("OOM");
- cases.* = TranslateCContext{
- .b = b,
- .step = parent_step,
- .test_index = 0,
- .test_filters = test_filters,
- .test_target_filters = test_target_filters,
- };
-
- translate_c.addCases(cases);
-}
-
-pub fn addRunTranslatedCTests(
- b: *std.Build,
- parent_step: *std.Build.Step,
- test_filters: []const []const u8,
- target: std.Build.ResolvedTarget,
-) void {
- const cases = b.allocator.create(RunTranslatedCContext) catch @panic("OOM");
- cases.* = .{
- .b = b,
- .step = parent_step,
- .test_index = 0,
- .test_filters = test_filters,
- .target = target,
- };
-
- run_translated_c.addCases(cases);
-}
-
const ModuleTestOptions = struct {
test_filters: []const []const u8,
test_target_filters: []const []const u8,
@@ -2558,9 +2516,7 @@ pub fn addCAbiTests(b: *std.Build, options: CAbiTestOptions) *Step {
pub fn addCases(
b: *std.Build,
parent_step: *Step,
- target: std.Build.ResolvedTarget,
case_test_options: @import("src/Cases.zig").CaseTestOptions,
- translate_c_options: @import("src/Cases.zig").TranslateCOptions,
build_options: @import("cases.zig").BuildOptions,
) !void {
const arena = b.allocator;
@@ -2574,15 +2530,6 @@ pub fn addCases(
cases.addFromDir(dir, b);
try @import("cases.zig").addCases(&cases, build_options, b);
- cases.lowerToTranslateCSteps(
- b,
- parent_step,
- case_test_options.test_filters,
- case_test_options.test_target_filters,
- target,
- translate_c_options,
- );
-
cases.lowerToBuildSteps(
b,
parent_step,
test/translate_c.zig
@@ -1,3923 +0,0 @@
-const std = @import("std");
-const builtin = @import("builtin");
-const tests = @import("tests.zig");
-
-// ********************************************************
-// * *
-// * DO NOT ADD NEW CASES HERE *
-// * instead add a file to test/cases/translate_c *
-// * *
-// ********************************************************
-
-pub fn addCases(cases: *tests.TranslateCContext) void {
- const default_enum_type = if (builtin.abi == .msvc) "c_int" else "c_uint";
-
- cases.add("do while with breaks",
- \\void foo(int a) {
- \\ do {
- \\ if (a) break;
- \\ } while (4);
- \\ do {
- \\ if (a) break;
- \\ } while (0);
- \\ do {
- \\ if (a) break;
- \\ } while (a);
- \\ do {
- \\ break;
- \\ } while (3);
- \\ do {
- \\ break;
- \\ } while (0);
- \\ do {
- \\ break;
- \\ } while (a);
- \\}
- , &[_][]const u8{
- \\pub export fn foo(arg_a: c_int) void {
- \\ var a = arg_a;
- \\ _ = &a;
- \\ while (true) {
- \\ if (a != 0) break;
- \\ }
- \\ while (true) {
- \\ if (a != 0) break;
- \\ if (!false) break;
- \\ }
- \\ while (true) {
- \\ if (a != 0) break;
- \\ if (!(a != 0)) break;
- \\ }
- \\ while (true) {
- \\ break;
- \\ }
- \\ while (true) {
- \\ break;
- \\ }
- \\ while (true) {
- \\ break;
- \\ }
- \\}
- });
-
- cases.add("variables check for opaque demotion",
- \\struct A {
- \\ _Atomic int a;
- \\} a;
- \\int main(void) {
- \\ struct A a;
- \\}
- , &[_][]const u8{
- \\pub const struct_A = opaque {};
- \\pub const a = @compileError("non-extern variable has opaque type");
- ,
- \\pub extern fn main() c_int;
- });
-
- cases.add("unnamed child types of typedef receive typedef's name",
- \\typedef enum {
- \\ FooA,
- \\ FooB,
- \\} Foo;
- \\typedef struct {
- \\ int a, b;
- \\} Bar;
- , &[_][]const u8{
- \\pub const FooA: c_int = 0;
- \\pub const FooB: c_int = 1;
- \\pub const Foo =
- ++ " " ++ default_enum_type ++
- \\;
- \\pub const Bar = extern struct {
- \\ a: c_int = @import("std").mem.zeroes(c_int),
- \\ b: c_int = @import("std").mem.zeroes(c_int),
- \\};
- });
-
- cases.add("if as while stmt has semicolon",
- \\void foo() {
- \\ while (1) if (1) {
- \\ int a = 1;
- \\ } else {
- \\ int b = 2;
- \\ }
- \\ if (1) if (1) {}
- \\}
- , &[_][]const u8{
- \\pub export fn foo() void {
- \\ while (true) if (true) {
- \\ var a: c_int = 1;
- \\ _ = &a;
- \\ } else {
- \\ var b: c_int = 2;
- \\ _ = &b;
- \\ };
- \\ if (true) if (true) {};
- \\}
- });
-
- cases.add("conditional operator cast to void",
- \\int bar();
- \\void foo() {
- \\ int a;
- \\ a ? a = 2 : bar();
- \\}
- , &[_][]const u8{
- \\pub extern fn bar(...) c_int;
- \\pub export fn foo() void {
- \\ var a: c_int = undefined;
- \\ _ = &a;
- \\ if (a != 0) a = 2 else _ = bar();
- \\}
- });
-
- cases.add("scoped typedef",
- \\void foo() {
- \\ typedef union {
- \\ int A;
- \\ int B;
- \\ int C;
- \\ } Foo;
- \\ Foo a = {0};
- \\ {
- \\ typedef union {
- \\ int A;
- \\ int B;
- \\ int C;
- \\ } Foo;
- \\ Foo a = {0};
- \\ }
- \\}
- , &[_][]const u8{
- \\pub export fn foo() void {
- \\ const union_unnamed_1 = extern union {
- \\ A: c_int,
- \\ B: c_int,
- \\ C: c_int,
- \\ };
- \\ _ = &union_unnamed_1;
- \\ const Foo = union_unnamed_1;
- \\ _ = &Foo;
- \\ var a: Foo = Foo{
- \\ .A = @as(c_int, 0),
- \\ };
- \\ _ = &a;
- \\ {
- \\ const union_unnamed_2 = extern union {
- \\ A: c_int,
- \\ B: c_int,
- \\ C: c_int,
- \\ };
- \\ _ = &union_unnamed_2;
- \\ const Foo_1 = union_unnamed_2;
- \\ _ = &Foo_1;
- \\ var a_2: Foo_1 = Foo_1{
- \\ .A = @as(c_int, 0),
- \\ };
- \\ _ = &a_2;
- \\ }
- \\}
- });
-
- cases.add("use cast param as macro fn return type",
- \\#include <stdint.h>
- \\#define SYS_BASE_CACHED 0
- \\#define MEM_PHYSICAL_TO_K0(x) (void*)((uint32_t)(x) + SYS_BASE_CACHED)
- , &[_][]const u8{
- \\pub inline fn MEM_PHYSICAL_TO_K0(x: anytype) ?*anyopaque {
- \\ _ = &x;
- \\ return @import("std").zig.c_translation.cast(?*anyopaque, @import("std").zig.c_translation.cast(u32, x) + SYS_BASE_CACHED);
- \\}
- });
-
- cases.add("variadic function demoted to extern",
- \\int foo(int bar, ...) {
- \\ return 1;
- \\}
- , &[_][]const u8{
- \\warning: TODO unable to translate variadic function, demoted to extern
- \\pub extern fn foo(bar: c_int, ...) c_int;
- });
-
- cases.add("pointer to opaque demoted struct",
- \\typedef struct {
- \\ _Atomic int foo;
- \\} Foo;
- \\
- \\typedef struct {
- \\ Foo *bar;
- \\} Bar;
- , &[_][]const u8{
- \\source.h:1:9: warning: struct demoted to opaque type - unable to translate type of field foo
- \\pub const Foo = opaque {};
- \\pub const Bar = extern struct {
- \\ bar: ?*Foo = @import("std").mem.zeroes(?*Foo),
- \\};
- });
-
- cases.add("macro expressions respect C operator precedence",
- \\int *foo = 0;
- \\#define FOO *((foo) + 2)
- \\#define VALUE (1 + 2 * 3 + 4 * 5 + 6 << 7 | 8 == 9)
- \\#define _AL_READ3BYTES(p) ((*(unsigned char *)(p)) \
- \\ | (*((unsigned char *)(p) + 1) << 8) \
- \\ | (*((unsigned char *)(p) + 2) << 16))
- , &[_][]const u8{
- \\pub inline fn FOO() @TypeOf((foo + @as(c_int, 2)).*) {
- \\ return (foo + @as(c_int, 2)).*;
- \\}
- ,
- \\pub const VALUE = ((((@as(c_int, 1) + (@as(c_int, 2) * @as(c_int, 3))) + (@as(c_int, 4) * @as(c_int, 5))) + @as(c_int, 6)) << @as(c_int, 7)) | @intFromBool(@as(c_int, 8) == @as(c_int, 9));
- ,
- \\pub inline fn _AL_READ3BYTES(p: anytype) @TypeOf((@import("std").zig.c_translation.cast([*c]u8, p).* | ((@import("std").zig.c_translation.cast([*c]u8, p) + @as(c_int, 1)).* << @as(c_int, 8))) | ((@import("std").zig.c_translation.cast([*c]u8, p) + @as(c_int, 2)).* << @as(c_int, 16))) {
- \\ _ = &p;
- \\ return (@import("std").zig.c_translation.cast([*c]u8, p).* | ((@import("std").zig.c_translation.cast([*c]u8, p) + @as(c_int, 1)).* << @as(c_int, 8))) | ((@import("std").zig.c_translation.cast([*c]u8, p) + @as(c_int, 2)).* << @as(c_int, 16));
- \\}
- });
-
- cases.add("static variable in block scope",
- \\float bar;
- \\int foo() {
- \\ _Thread_local static int bar = 2;
- \\}
- , &[_][]const u8{
- \\pub export var bar: f32 = @import("std").mem.zeroes(f32);
- \\pub export fn foo() c_int {
- \\ const bar_1 = struct {
- \\ threadlocal var static: c_int = 2;
- \\ };
- \\ _ = &bar_1;
- \\ return 0;
- \\}
- });
-
- cases.add("missing return stmt",
- \\int foo() {}
- \\int bar() {
- \\ int a = 2;
- \\}
- \\int baz() {
- \\ return 0;
- \\}
- , &[_][]const u8{
- \\pub export fn foo() c_int {
- \\ return 0;
- \\}
- \\pub export fn bar() c_int {
- \\ var a: c_int = 2;
- \\ _ = &a;
- \\ return 0;
- \\}
- \\pub export fn baz() c_int {
- \\ return 0;
- \\}
- });
-
- cases.add("alignof",
- \\void main() {
- \\ int a = _Alignof(int);
- \\}
- , &[_][]const u8{
- \\pub export fn main() void {
- \\ var a: c_int = @as(c_int, @bitCast(@as(c_uint, @truncate(@alignOf(c_int)))));
- \\ _ = &a;
- \\}
- });
-
- cases.add("initializer list macro",
- \\typedef struct Color {
- \\ unsigned char r;
- \\ unsigned char g;
- \\ unsigned char b;
- \\ unsigned char a;
- \\} Color;
- \\#define CLITERAL(type) (type)
- \\#define LIGHTGRAY CLITERAL(Color){ 200, 200, 200, 255 } // Light Gray
- \\typedef struct boom_t
- \\{
- \\ int i1;
- \\} boom_t;
- \\#define FOO ((boom_t){1})
- \\typedef struct { float x; } MyCStruct;
- \\#define A(_x) (MyCStruct) { .x = (_x) }
- \\#define B A(0.f)
- , &[_][]const u8{
- \\pub const struct_Color = extern struct {
- \\ r: u8 = @import("std").mem.zeroes(u8),
- \\ g: u8 = @import("std").mem.zeroes(u8),
- \\ b: u8 = @import("std").mem.zeroes(u8),
- \\ a: u8 = @import("std").mem.zeroes(u8),
- \\};
- \\pub const Color = struct_Color;
- ,
- \\pub inline fn CLITERAL(@"type": anytype) @TypeOf(@"type") {
- \\ _ = &@"type";
- \\ return @"type";
- \\}
- ,
- \\pub const LIGHTGRAY = @import("std").mem.zeroInit(CLITERAL(Color), .{ @as(c_int, 200), @as(c_int, 200), @as(c_int, 200), @as(c_int, 255) });
- ,
- \\pub const struct_boom_t = extern struct {
- \\ i1: c_int = @import("std").mem.zeroes(c_int),
- \\};
- \\pub const boom_t = struct_boom_t;
- ,
- \\pub const FOO = @import("std").mem.zeroInit(boom_t, .{@as(c_int, 1)});
- ,
- \\pub const MyCStruct = extern struct {
- \\ x: f32 = @import("std").mem.zeroes(f32),
- \\};
- ,
- \\pub inline fn A(_x: anytype) MyCStruct {
- \\ _ = &_x;
- \\ return @import("std").mem.zeroInit(MyCStruct, .{
- \\ .x = _x,
- \\ });
- \\}
- ,
- \\pub const B = A(@as(f32, 0));
- });
-
- cases.add("complex switch",
- \\int main() {
- \\ int i = 2;
- \\ switch (i) {
- \\ case 0: {
- \\ case 2:{
- \\ i += 2;}
- \\ i += 1;
- \\ }
- \\ }
- \\}
- , &[_][]const u8{ // TODO properly translate this
- \\source.h:5:13: warning: TODO complex switch
- ,
- \\source.h:1:5: warning: unable to translate function, demoted to extern
- \\pub extern fn main() c_int;
- });
-
- cases.add("correct semicolon after infixop",
- \\#define _IO_ERR_SEEN 0
- \\#define __ferror_unlocked_body(_fp) (((_fp)->_flags & _IO_ERR_SEEN) != 0)
- , &[_][]const u8{
- \\pub inline fn __ferror_unlocked_body(_fp: anytype) @TypeOf((_fp.*._flags & _IO_ERR_SEEN) != @as(c_int, 0)) {
- \\ _ = &_fp;
- \\ return (_fp.*._flags & _IO_ERR_SEEN) != @as(c_int, 0);
- \\}
- });
-
- cases.add("c booleans are just ints",
- \\#define FOO(x) ((x >= 0) + (x >= 0))
- \\#define BAR 1 && 2 > 4
- , &[_][]const u8{
- \\pub inline fn FOO(x: anytype) @TypeOf(@intFromBool(x >= @as(c_int, 0)) + @intFromBool(x >= @as(c_int, 0))) {
- \\ _ = &x;
- \\ return @intFromBool(x >= @as(c_int, 0)) + @intFromBool(x >= @as(c_int, 0));
- \\}
- ,
- \\pub const BAR = (@as(c_int, 1) != 0) and (@as(c_int, 2) > @as(c_int, 4));
- });
-
- cases.add("struct with flexible array",
- \\struct foo { int x; int y[]; };
- \\struct bar { int x; int y[0]; };
- , &[_][]const u8{
- \\pub const struct_foo = extern struct {
- \\ x: c_int align(4) = @import("std").mem.zeroes(c_int),
- \\ pub fn y(self: anytype) @import("std").zig.c_translation.FlexibleArrayType(@TypeOf(self), c_int) {
- \\ const Intermediate = @import("std").zig.c_translation.FlexibleArrayType(@TypeOf(self), u8);
- \\ const ReturnType = @import("std").zig.c_translation.FlexibleArrayType(@TypeOf(self), c_int);
- \\ return @as(ReturnType, @ptrCast(@alignCast(@as(Intermediate, @ptrCast(self)) + 4)));
- \\ }
- \\};
- \\pub const struct_bar = extern struct {
- \\ x: c_int align(4) = @import("std").mem.zeroes(c_int),
- \\ pub fn y(self: anytype) @import("std").zig.c_translation.FlexibleArrayType(@TypeOf(self), c_int) {
- \\ const Intermediate = @import("std").zig.c_translation.FlexibleArrayType(@TypeOf(self), u8);
- \\ const ReturnType = @import("std").zig.c_translation.FlexibleArrayType(@TypeOf(self), c_int);
- \\ return @as(ReturnType, @ptrCast(@alignCast(@as(Intermediate, @ptrCast(self)) + 4)));
- \\ }
- \\};
- });
-
- cases.add("nested loops without blocks",
- \\void foo() {
- \\ while (0) while (0) {}
- \\ for (;;) while (0);
- \\ for (;;) do {} while (0);
- \\}
- , &[_][]const u8{
- \\pub export fn foo() void {
- \\ while (false) while (false) {};
- \\ while (true) while (false) {};
- \\ while (true) while (true) {
- \\ if (!false) break;
- \\ };
- \\}
- });
-
- cases.add("macro comma operator",
- \\#define foo (foo, bar)
- \\int baz(int x, int y) { return 0; }
- \\#define bar(x) (&x, +3, 4 == 4, 5 * 6, baz(1, 2), 2 % 2, baz(1,2))
- , &[_][]const u8{
- \\pub const foo = blk_1: {
- \\ _ = &foo;
- \\ break :blk_1 bar;
- \\};
- ,
- \\pub inline fn bar(x: anytype) @TypeOf(baz(@as(c_int, 1), @as(c_int, 2))) {
- \\ _ = &x;
- \\ return blk_1: {
- \\ _ = &x;
- \\ _ = @as(c_int, 3);
- \\ _ = @as(c_int, 4) == @as(c_int, 4);
- \\ _ = @as(c_int, 5) * @as(c_int, 6);
- \\ _ = baz(@as(c_int, 1), @as(c_int, 2));
- \\ _ = @import("std").zig.c_translation.MacroArithmetic.rem(@as(c_int, 2), @as(c_int, 2));
- \\ break :blk_1 baz(@as(c_int, 1), @as(c_int, 2));
- \\ };
- \\}
- });
-
- cases.add("macro keyword define",
- \\#define foo 1
- \\#define inline 2
- , &[_][]const u8{
- \\pub const foo = @as(c_int, 1);
- ,
- \\pub const @"inline" = @as(c_int, 2);
- });
-
- cases.add("macro line continuation",
- \\int BAR = 0;
- \\#define FOO -\
- \\BAR
- , &[_][]const u8{
- \\pub inline fn FOO() @TypeOf(-BAR) {
- \\ return -BAR;
- \\}
- });
-
- cases.add("struct with atomic field",
- \\struct arcan_shmif_cont {
- \\ struct arcan_shmif_page* addr;
- \\};
- \\struct arcan_shmif_page {
- \\ volatile _Atomic int abufused[12];
- \\};
- , &[_][]const u8{
- \\source.h:4:8: warning: struct demoted to opaque type - unable to translate type of field abufused
- \\pub const struct_arcan_shmif_page = opaque {};
- \\pub const struct_arcan_shmif_cont = extern struct {
- \\ addr: ?*struct_arcan_shmif_page = @import("std").mem.zeroes(?*struct_arcan_shmif_page),
- \\};
- });
-
- cases.add("function prototype translated as optional",
- \\typedef void (*fnptr_ty)(void);
- \\typedef __attribute__((cdecl)) void (*fnptr_attr_ty)(void);
- \\struct foo {
- \\ __attribute__((cdecl)) void (*foo)(void);
- \\ void (*bar)(void);
- \\ fnptr_ty baz;
- \\ fnptr_attr_ty qux;
- \\};
- , &[_][]const u8{
- \\pub const fnptr_ty = ?*const fn () callconv(.c) void;
- \\pub const fnptr_attr_ty = ?*const fn () callconv(.c) void;
- \\pub const struct_foo = extern struct {
- \\ foo: ?*const fn () callconv(.c) void = @import("std").mem.zeroes(?*const fn () callconv(.c) void),
- \\ bar: ?*const fn () callconv(.c) void = @import("std").mem.zeroes(?*const fn () callconv(.c) void),
- \\ baz: fnptr_ty = @import("std").mem.zeroes(fnptr_ty),
- \\ qux: fnptr_attr_ty = @import("std").mem.zeroes(fnptr_attr_ty),
- \\};
- });
-
- cases.add("array initializer w/ typedef",
- \\typedef unsigned char uuid_t[16];
- \\static const uuid_t UUID_NULL __attribute__ ((unused)) = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
- , &[_][]const u8{
- \\pub const uuid_t = [16]u8;
- \\pub const UUID_NULL: uuid_t = [16]u8{
- \\ 0,
- \\ 0,
- \\ 0,
- \\ 0,
- \\ 0,
- \\ 0,
- \\ 0,
- \\ 0,
- \\ 0,
- \\ 0,
- \\ 0,
- \\ 0,
- \\ 0,
- \\ 0,
- \\ 0,
- \\ 0,
- \\};
- });
-
- cases.add("#define hex literal with capital X",
- \\#define VAL 0XF00D
- , &[_][]const u8{
- \\pub const VAL = @import("std").zig.c_translation.promoteIntLiteral(c_int, 0xF00D, .hex);
- });
-
- cases.add("anonymous struct & unions",
- \\typedef struct {
- \\ union {
- \\ char x;
- \\ struct { int y; };
- \\ };
- \\} outer;
- \\void foo(outer *x) { x->y = x->x; }
- , &[_][]const u8{
- \\const struct_unnamed_2 = extern struct {
- \\ y: c_int = @import("std").mem.zeroes(c_int),
- \\};
- \\const union_unnamed_1 = extern union {
- \\ x: u8,
- \\ unnamed_0: struct_unnamed_2,
- \\};
- \\pub const outer = extern struct {
- \\ unnamed_0: union_unnamed_1 = @import("std").mem.zeroes(union_unnamed_1),
- \\};
- \\pub export fn foo(arg_x: [*c]outer) void {
- \\ var x = arg_x;
- \\ _ = &x;
- \\ x.*.unnamed_0.unnamed_0.y = @as(c_int, @bitCast(@as(c_uint, x.*.unnamed_0.x)));
- \\}
- });
-
- cases.add("struct initializer - simple",
- \\typedef struct { int x; } foo;
- \\struct {double x,y,z;} s0 = {1.2, 1.3};
- \\struct {int sec,min,hour,day,mon,year;} s1 = {.day=31,12,2014,.sec=30,15,17};
- \\struct {int x,y;} s2 = {.y = 2, .x=1};
- \\foo s3 = { 123 };
- , &[_][]const u8{
- \\pub const foo = extern struct {
- \\ x: c_int = @import("std").mem.zeroes(c_int),
- \\};
- \\const struct_unnamed_1 = extern struct {
- \\ x: f64 = @import("std").mem.zeroes(f64),
- \\ y: f64 = @import("std").mem.zeroes(f64),
- \\ z: f64 = @import("std").mem.zeroes(f64),
- \\};
- \\pub export var s0: struct_unnamed_1 = struct_unnamed_1{
- \\ .x = 1.2,
- \\ .y = 1.3,
- \\ .z = 0,
- \\};
- \\const struct_unnamed_2 = extern struct {
- \\ sec: c_int = @import("std").mem.zeroes(c_int),
- \\ min: c_int = @import("std").mem.zeroes(c_int),
- \\ hour: c_int = @import("std").mem.zeroes(c_int),
- \\ day: c_int = @import("std").mem.zeroes(c_int),
- \\ mon: c_int = @import("std").mem.zeroes(c_int),
- \\ year: c_int = @import("std").mem.zeroes(c_int),
- \\};
- \\pub export var s1: struct_unnamed_2 = struct_unnamed_2{
- \\ .sec = @as(c_int, 30),
- \\ .min = @as(c_int, 15),
- \\ .hour = @as(c_int, 17),
- \\ .day = @as(c_int, 31),
- \\ .mon = @as(c_int, 12),
- \\ .year = @as(c_int, 2014),
- \\};
- \\const struct_unnamed_3 = extern struct {
- \\ x: c_int = @import("std").mem.zeroes(c_int),
- \\ y: c_int = @import("std").mem.zeroes(c_int),
- \\};
- \\pub export var s2: struct_unnamed_3 = struct_unnamed_3{
- \\ .x = @as(c_int, 1),
- \\ .y = @as(c_int, 2),
- \\};
- \\pub export var s3: foo = foo{
- \\ .x = @as(c_int, 123),
- \\};
- });
-
- cases.add("simple ptrCast for casts between opaque types",
- \\struct opaque;
- \\struct opaque_2;
- \\void function(struct opaque *opaque) {
- \\ struct opaque_2 *cast = (struct opaque_2 *)opaque;
- \\}
- , &[_][]const u8{
- \\pub const struct_opaque = opaque {};
- \\pub const struct_opaque_2 = opaque {};
- \\pub export fn function(arg_opaque_1: ?*struct_opaque) void {
- \\ var opaque_1 = arg_opaque_1;
- \\ _ = &opaque_1;
- \\ var cast: ?*struct_opaque_2 = @as(?*struct_opaque_2, @ptrCast(opaque_1));
- \\ _ = &cast;
- \\}
- });
-
- cases.add("struct initializer - packed",
- \\struct {int x,y,z;} __attribute__((packed)) s0 = {1, 2};
- , &[_][]const u8{
- \\const struct_unnamed_1 = extern struct {
- \\ x: c_int align(1) = @import("std").mem.zeroes(c_int),
- \\ y: c_int align(1) = @import("std").mem.zeroes(c_int),
- \\ z: c_int align(1) = @import("std").mem.zeroes(c_int),
- \\};
- \\pub export var s0: struct_unnamed_1 = struct_unnamed_1{
- \\ .x = @as(c_int, 1),
- \\ .y = @as(c_int, 2),
- \\ .z = 0,
- \\};
- });
-
- cases.add("linksection() attribute",
- \\// Use the "segment,section" format to make this test pass when
- \\// targeting the mach-o binary format
- \\__attribute__ ((__section__("NEAR,.data")))
- \\extern char my_array[16];
- \\__attribute__ ((__section__("NEAR,.data")))
- \\void my_fn(void) { }
- , &[_][]const u8{
- \\pub extern var my_array: [16]u8 linksection("NEAR,.data");
- \\pub export fn my_fn() linksection("NEAR,.data") void {}
- });
-
- cases.add("simple var decls",
- \\void foo(void) {
- \\ int a;
- \\ char b = 123;
- \\ const int c;
- \\ const unsigned d = 440;
- \\ int e = 10;
- \\ unsigned int f = 10u;
- \\}
- , &[_][]const u8{
- \\pub export fn foo() void {
- \\ var a: c_int = undefined;
- \\ _ = &a;
- \\ var b: u8 = 123;
- \\ _ = &b;
- \\ const c: c_int = undefined;
- \\ _ = &c;
- \\ const d: c_uint = @as(c_uint, @bitCast(@as(c_int, 440)));
- \\ _ = &d;
- \\ var e: c_int = 10;
- \\ _ = &e;
- \\ var f: c_uint = 10;
- \\ _ = &f;
- \\}
- });
-
- cases.add("ignore result, explicit function arguments",
- \\void foo(void) {
- \\ int a;
- \\ 1;
- \\ "hey";
- \\ 1 + 1;
- \\ 1 - 1;
- \\ a = 1;
- \\}
- , &[_][]const u8{
- \\pub export fn foo() void {
- \\ var a: c_int = undefined;
- \\ _ = &a;
- \\ _ = @as(c_int, 1);
- \\ _ = "hey";
- \\ _ = @as(c_int, 1) + @as(c_int, 1);
- \\ _ = @as(c_int, 1) - @as(c_int, 1);
- \\ a = 1;
- \\}
- });
-
- cases.add("function with no prototype",
- \\int foo() {
- \\ return 5;
- \\}
- , &[_][]const u8{
- \\pub export fn foo() c_int {
- \\ return 5;
- \\}
- });
-
- cases.add("variables",
- \\extern int extern_var;
- \\static const int int_var = 13;
- \\int foo;
- , &[_][]const u8{
- \\pub extern var extern_var: c_int;
- \\pub const int_var: c_int = 13;
- \\pub export var foo: c_int = @import("std").mem.zeroes(c_int);
- });
-
- cases.add("const ptr initializer",
- \\static const char *v0 = "0.0.0";
- , &[_][]const u8{
- \\pub var v0: [*c]const u8 = "0.0.0";
- });
-
- cases.add("static incomplete array inside function",
- \\void foo(void) {
- \\ static const char v2[] = "2.2.2";
- \\}
- , &[_][]const u8{
- \\pub export fn foo() void {
- \\ const v2 = struct {
- \\ const static: [5:0]u8 = "2.2.2".*;
- \\ };
- \\ _ = &v2;
- \\}
- });
-
- cases.add("simple function definition",
- \\void foo(void) {}
- \\static void bar(void) {}
- , &[_][]const u8{
- \\pub export fn foo() void {}
- \\pub fn bar() callconv(.c) void {}
- });
-
- cases.add("typedef void",
- \\typedef void Foo;
- \\Foo fun(Foo *a);
- , &[_][]const u8{
- \\pub const Foo = anyopaque;
- ,
- \\pub extern fn fun(a: ?*Foo) void;
- });
-
- cases.add("duplicate typedef",
- \\typedef long foo;
- \\typedef int bar;
- \\typedef long foo;
- \\typedef int baz;
- , &[_][]const u8{
- \\pub const foo = c_long;
- \\pub const bar = c_int;
- \\pub const baz = c_int;
- });
-
- cases.add("casting pointers to ints and ints to pointers",
- \\void foo(void);
- \\void bar(void) {
- \\ void *func_ptr = foo;
- \\ void (*typed_func_ptr)(void) = (void (*)(void)) (unsigned long) func_ptr;
- \\}
- , &[_][]const u8{
- \\pub extern fn foo() void;
- \\pub export fn bar() void {
- \\ var func_ptr: ?*anyopaque = @as(?*anyopaque, @ptrCast(&foo));
- \\ _ = &func_ptr;
- \\ var typed_func_ptr: ?*const fn () callconv(.c) void = @as(?*const fn () callconv(.c) void, @ptrFromInt(@as(c_ulong, @intCast(@intFromPtr(func_ptr)))));
- \\ _ = &typed_func_ptr;
- \\}
- });
-
- cases.add("always_inline attribute",
- \\__attribute__((always_inline)) int foo() {
- \\ return 5;
- \\}
- , &[_][]const u8{
- \\pub inline fn foo() c_int {
- \\ return 5;
- \\}
- });
-
- cases.add("add, sub, mul, div, rem",
- \\int s() {
- \\ int a, b, c;
- \\ c = a + b;
- \\ c = a - b;
- \\ c = a * b;
- \\ c = a / b;
- \\ c = a % b;
- \\}
- \\unsigned u() {
- \\ unsigned a, b, c;
- \\ c = a + b;
- \\ c = a - b;
- \\ c = a * b;
- \\ c = a / b;
- \\ c = a % b;
- \\}
- , &[_][]const u8{
- \\pub export fn s() c_int {
- \\ var a: c_int = undefined;
- \\ _ = &a;
- \\ var b: c_int = undefined;
- \\ _ = &b;
- \\ var c: c_int = undefined;
- \\ _ = &c;
- \\ c = a + b;
- \\ c = a - b;
- \\ c = a * b;
- \\ c = @divTrunc(a, b);
- \\ c = @import("std").zig.c_translation.signedRemainder(a, b);
- \\ return 0;
- \\}
- \\pub export fn u() c_uint {
- \\ var a: c_uint = undefined;
- \\ _ = &a;
- \\ var b: c_uint = undefined;
- \\ _ = &b;
- \\ var c: c_uint = undefined;
- \\ _ = &c;
- \\ c = a +% b;
- \\ c = a -% b;
- \\ c = a *% b;
- \\ c = a / b;
- \\ c = a % b;
- \\ return 0;
- \\}
- });
-
- cases.add("typedef of function in struct field",
- \\typedef void lws_callback_function(void);
- \\struct Foo {
- \\ void (*func)(void);
- \\ lws_callback_function *callback_http;
- \\};
- , &[_][]const u8{
- \\pub const lws_callback_function = fn () callconv(.c) void;
- \\pub const struct_Foo = extern struct {
- \\ func: ?*const fn () callconv(.c) void = @import("std").mem.zeroes(?*const fn () callconv(.c) void),
- \\ callback_http: ?*const lws_callback_function = @import("std").mem.zeroes(?*const lws_callback_function),
- \\};
- });
-
- cases.add("macro with left shift",
- \\#define REDISMODULE_READ (1<<0)
- , &[_][]const u8{
- \\pub const REDISMODULE_READ = @as(c_int, 1) << @as(c_int, 0);
- });
-
- cases.add("macro with right shift",
- \\#define FLASH_SIZE 0x200000UL /* 2 MB */
- \\#define FLASH_BANK_SIZE (FLASH_SIZE >> 1) /* 1 MB */
- , &[_][]const u8{
- \\pub const FLASH_SIZE = @as(c_ulong, 0x200000);
- ,
- \\pub const FLASH_BANK_SIZE = FLASH_SIZE >> @as(c_int, 1);
- });
-
- cases.add("self referential struct with function pointer",
- \\struct Foo {
- \\ void (*derp)(struct Foo *foo);
- \\};
- , &[_][]const u8{
- \\pub const struct_Foo = extern struct {
- \\ derp: ?*const fn ([*c]struct_Foo) callconv(.c) void = @import("std").mem.zeroes(?*const fn ([*c]struct_Foo) callconv(.c) void),
- \\};
- ,
- \\pub const Foo = struct_Foo;
- });
-
- cases.add("#define an unsigned integer literal",
- \\#define CHANNEL_COUNT 24
- , &[_][]const u8{
- \\pub const CHANNEL_COUNT = @as(c_int, 24);
- });
-
- cases.add("#define referencing another #define",
- \\#define THING2 THING1
- \\#define THING1 1234
- , &[_][]const u8{
- \\pub const THING1 = @as(c_int, 1234);
- ,
- \\pub const THING2 = THING1;
- });
-
- cases.add("#define string",
- \\#define foo "a string"
- , &[_][]const u8{
- \\pub const foo = "a string";
- });
-
- cases.add("macro with parens around negative number",
- \\#define LUA_GLOBALSINDEX (-10002)
- , &[_][]const u8{
- \\pub const LUA_GLOBALSINDEX = -@as(c_int, 10002);
- });
-
- cases.add(
- "u integer suffix after 0 (zero) in macro definition",
- "#define ZERO 0U",
- &[_][]const u8{
- "pub const ZERO = @as(c_uint, 0);",
- },
- );
-
- cases.add(
- "l integer suffix after 0 (zero) in macro definition",
- "#define ZERO 0L",
- &[_][]const u8{
- "pub const ZERO = @as(c_long, 0);",
- },
- );
-
- cases.add(
- "ul integer suffix after 0 (zero) in macro definition",
- "#define ZERO 0UL",
- &[_][]const u8{
- "pub const ZERO = @as(c_ulong, 0);",
- },
- );
-
- cases.add(
- "lu integer suffix after 0 (zero) in macro definition",
- "#define ZERO 0LU",
- &[_][]const u8{
- "pub const ZERO = @as(c_ulong, 0);",
- },
- );
-
- cases.add(
- "ll integer suffix after 0 (zero) in macro definition",
- "#define ZERO 0LL",
- &[_][]const u8{
- "pub const ZERO = @as(c_longlong, 0);",
- },
- );
-
- cases.add(
- "ull integer suffix after 0 (zero) in macro definition",
- "#define ZERO 0ULL",
- &[_][]const u8{
- "pub const ZERO = @as(c_ulonglong, 0);",
- },
- );
-
- cases.add(
- "llu integer suffix after 0 (zero) in macro definition",
- "#define ZERO 0LLU",
- &[_][]const u8{
- "pub const ZERO = @as(c_ulonglong, 0);",
- },
- );
-
- cases.add(
- "bitwise not on u-suffixed 0 (zero) in macro definition",
- "#define NOT_ZERO (~0U)",
- &[_][]const u8{
- "pub const NOT_ZERO = ~@as(c_uint, 0);",
- },
- );
-
- cases.add("float suffixes",
- \\#define foo 3.14f
- \\#define bar 16.e-2l
- \\#define FOO 0.12345
- \\#define BAR .12345
- \\#define baz 1e1
- \\#define BAZ 42e-3f
- \\#define foobar -73.L
- \\extern const float my_float = 1.0f;
- \\extern const double my_double = 1.0;
- \\extern const long double my_longdouble = 1.0l;
- \\extern const long double my_extended_precision_longdouble = 1.0000000000000003l;
- , &([_][]const u8{
- "pub const foo = @as(f32, 3.14);",
- "pub const bar = @as(c_longdouble, 16.e-2);",
- "pub const FOO = @as(f64, 0.12345);",
- "pub const BAR = @as(f64, 0.12345);",
- "pub const baz = @as(f64, 1e1);",
- "pub const BAZ = @as(f32, 42e-3);",
- "pub const foobar = -@as(c_longdouble, 73);",
- "pub export const my_float: f32 = 1.0;",
- "pub export const my_double: f64 = 1.0;",
- "pub export const my_longdouble: c_longdouble = 1.0;",
- switch (@bitSizeOf(c_longdouble)) {
- // TODO implement decimal format for f128 <https://github.com/ziglang/zig/issues/1181>
- // (so that f80/f128 values not exactly representable as f64 can be emitted in decimal form)
- 80 => "pub export const my_extended_precision_longdouble: c_longdouble = 0x1.000000000000159ep0;",
- 128 => "pub export const my_extended_precision_longdouble: c_longdouble = 0x1.000000000000159e05f1e2674d21p0;",
- else => "pub export const my_extended_precision_longdouble: c_longdouble = 1.0000000000000002;",
- },
- }));
-
- cases.add("macro defines hexadecimal float",
- \\#define FOO 0xf7p38
- \\#define BAR -0X8F.BP5F
- \\#define FOOBAR 0X0P+0
- \\#define BAZ -0x.0a5dp+12
- \\#define FOOBAZ 0xfE.P-1l
- , &[_][]const u8{
- "pub const FOO = @as(f64, 0xf7p38);",
- "pub const BAR = -@as(f32, 0x8F.BP5);",
- "pub const FOOBAR = @as(f64, 0x0P+0);",
- "pub const BAZ = -@as(f64, 0x0.0a5dp+12);",
- "pub const FOOBAZ = @as(c_longdouble, 0xfE.P-1);",
- });
-
- cases.add("comments",
- \\#define foo 1 //foo
- \\#define bar /* bar */ 2
- , &[_][]const u8{
- "pub const foo = @as(c_int, 1);",
- "pub const bar = @as(c_int, 2);",
- });
-
- cases.add("string prefix",
- \\#define foo L"hello"
- , &[_][]const u8{
- "pub const foo = \"hello\";",
- });
-
- cases.add("null statements",
- \\void foo(void) {
- \\ ;;;;;
- \\}
- , &[_][]const u8{
- \\pub export fn foo() void {}
- });
-
- if (builtin.os.tag != .windows) {
- // Windows treats this as an enum with type c_int
- cases.add("big negative enum init values when C ABI supports long long enums",
- \\enum EnumWithInits {
- \\ VAL01 = 0,
- \\ VAL02 = 1,
- \\ VAL03 = 2,
- \\ VAL04 = 3,
- \\ VAL05 = -1,
- \\ VAL06 = -2,
- \\ VAL07 = -3,
- \\ VAL08 = -4,
- \\ VAL09 = VAL02 + VAL08,
- \\ VAL10 = -1000012000,
- \\ VAL11 = -1000161000,
- \\ VAL12 = -1000174001,
- \\ VAL13 = VAL09,
- \\ VAL14 = VAL10,
- \\ VAL15 = VAL11,
- \\ VAL16 = VAL13,
- \\ VAL17 = (VAL16 - VAL10 + 1),
- \\ VAL18 = 0x1000000000000000L,
- \\ VAL19 = VAL18 + VAL18 + VAL18 - 1,
- \\ VAL20 = VAL19 + VAL19,
- \\ VAL21 = VAL20 + 0xFFFFFFFFFFFFFFFF,
- \\ VAL22 = 0xFFFFFFFFFFFFFFFF + 1,
- \\ VAL23 = 0xFFFFFFFFFFFFFFFF,
- \\};
- , &[_][]const u8{
- \\pub const VAL01: c_longlong = 0;
- \\pub const VAL02: c_longlong = 1;
- \\pub const VAL03: c_longlong = 2;
- \\pub const VAL04: c_longlong = 3;
- \\pub const VAL05: c_longlong = -1;
- \\pub const VAL06: c_longlong = -2;
- \\pub const VAL07: c_longlong = -3;
- \\pub const VAL08: c_longlong = -4;
- \\pub const VAL09: c_longlong = -3;
- \\pub const VAL10: c_longlong = -1000012000;
- \\pub const VAL11: c_longlong = -1000161000;
- \\pub const VAL12: c_longlong = -1000174001;
- \\pub const VAL13: c_longlong = -3;
- \\pub const VAL14: c_longlong = -1000012000;
- \\pub const VAL15: c_longlong = -1000161000;
- \\pub const VAL16: c_longlong = -3;
- \\pub const VAL17: c_longlong = 1000011998;
- \\pub const VAL18: c_longlong = 1152921504606846976;
- \\pub const VAL19: c_longlong = 3458764513820540927;
- \\pub const VAL20: c_longlong = 6917529027641081854;
- \\pub const VAL21: c_longlong = 6917529027641081853;
- \\pub const VAL22: c_longlong = 0;
- \\pub const VAL23: c_longlong = -1;
- \\pub const enum_EnumWithInits = c_longlong;
- });
- }
-
- cases.add("predefined expressions",
- \\void foo(void) {
- \\ __func__;
- \\ __FUNCTION__;
- \\ __PRETTY_FUNCTION__;
- \\}
- , &[_][]const u8{
- \\pub export fn foo() void {
- \\ _ = "foo";
- \\ _ = "foo";
- \\ _ = "void foo(void)";
- \\}
- });
-
- cases.add("constant size array",
- \\void func(int array[20]);
- , &[_][]const u8{
- \\pub extern fn func(array: [*c]c_int) void;
- });
-
- cases.add("__cdecl doesn't mess up function pointers",
- \\void foo(void (__cdecl *fn_ptr)(void));
- , &[_][]const u8{
- \\pub extern fn foo(fn_ptr: ?*const fn () callconv(.c) void) void;
- });
-
- cases.add("void cast",
- \\void foo() {
- \\ int a;
- \\ (void) a;
- \\}
- , &[_][]const u8{
- \\pub export fn foo() void {
- \\ var a: c_int = undefined;
- \\ _ = &a;
- \\ _ = &a;
- \\}
- });
-
- cases.add("implicit cast to void *",
- \\void *foo() {
- \\ unsigned short *x;
- \\ return x;
- \\}
- , &[_][]const u8{
- \\pub export fn foo() ?*anyopaque {
- \\ var x: [*c]c_ushort = undefined;
- \\ _ = &x;
- \\ return @as(?*anyopaque, @ptrCast(x));
- \\}
- });
-
- cases.add("null pointer implicit cast",
- \\int* foo(void) {
- \\ return 0;
- \\}
- , &[_][]const u8{
- \\pub export fn foo() [*c]c_int {
- \\ return null;
- \\}
- });
-
- cases.add("string literal",
- \\const char *foo(void) {
- \\ return "bar";
- \\}
- , &[_][]const u8{
- \\pub export fn foo() [*c]const u8 {
- \\ return "bar";
- \\}
- });
-
- cases.add("return void",
- \\void foo(void) {
- \\ return;
- \\}
- , &[_][]const u8{
- \\pub export fn foo() void {
- \\ return;
- \\}
- });
-
- cases.add("for loop",
- \\void foo(void) {
- \\ for (int i = 0; i; i++) { }
- \\}
- , &[_][]const u8{
- \\pub export fn foo() void {
- \\ {
- \\ var i: c_int = 0;
- \\ _ = &i;
- \\ while (i != 0) : (i += 1) {}
- \\ }
- \\}
- });
-
- cases.add("empty for loop",
- \\void foo(void) {
- \\ for (;;) { }
- \\}
- , &[_][]const u8{
- \\pub export fn foo() void {
- \\ while (true) {}
- \\}
- });
-
- cases.add("for loop with simple init expression",
- \\void foo(void) {
- \\ int i;
- \\ for (i = 3; i; i--) { }
- \\}
- , &[_][]const u8{
- \\pub export fn foo() void {
- \\ var i: c_int = undefined;
- \\ _ = &i;
- \\ {
- \\ i = 3;
- \\ while (i != 0) : (i -= 1) {}
- \\ }
- \\}
- });
-
- cases.add("break statement",
- \\void foo(void) {
- \\ for (;;) {
- \\ break;
- \\ }
- \\}
- , &[_][]const u8{
- \\pub export fn foo() void {
- \\ while (true) {
- \\ break;
- \\ }
- \\}
- });
-
- cases.add("continue statement",
- \\void foo(void) {
- \\ for (;;) {
- \\ continue;
- \\ }
- \\}
- , &[_][]const u8{
- \\pub export fn foo() void {
- \\ while (true) {
- \\ continue;
- \\ }
- \\}
- });
-
- cases.add("pointer casting",
- \\float *ptrcast() {
- \\ int *a;
- \\ return (float *)a;
- \\}
- , &[_][]const u8{
- \\pub export fn ptrcast() [*c]f32 {
- \\ var a: [*c]c_int = undefined;
- \\ _ = &a;
- \\ return @as([*c]f32, @ptrCast(@alignCast(a)));
- \\}
- });
-
- cases.add("casting pointer to pointer",
- \\float **ptrptrcast() {
- \\ int **a;
- \\ return (float **)a;
- \\}
- , &[_][]const u8{
- \\pub export fn ptrptrcast() [*c][*c]f32 {
- \\ var a: [*c][*c]c_int = undefined;
- \\ _ = &a;
- \\ return @as([*c][*c]f32, @ptrCast(@alignCast(a)));
- \\}
- });
-
- cases.add("pointer conversion with different alignment",
- \\void test_ptr_cast() {
- \\ void *p;
- \\ {
- \\ char *to_char = (char *)p;
- \\ short *to_short = (short *)p;
- \\ int *to_int = (int *)p;
- \\ long long *to_longlong = (long long *)p;
- \\ }
- \\ {
- \\ char *to_char = p;
- \\ short *to_short = p;
- \\ int *to_int = p;
- \\ long long *to_longlong = p;
- \\ }
- \\}
- , &[_][]const u8{
- \\pub export fn test_ptr_cast() void {
- \\ var p: ?*anyopaque = undefined;
- \\ _ = &p;
- \\ {
- \\ var to_char: [*c]u8 = @as([*c]u8, @ptrCast(@alignCast(p)));
- \\ _ = &to_char;
- \\ var to_short: [*c]c_short = @as([*c]c_short, @ptrCast(@alignCast(p)));
- \\ _ = &to_short;
- \\ var to_int: [*c]c_int = @as([*c]c_int, @ptrCast(@alignCast(p)));
- \\ _ = &to_int;
- \\ var to_longlong: [*c]c_longlong = @as([*c]c_longlong, @ptrCast(@alignCast(p)));
- \\ _ = &to_longlong;
- \\ }
- \\ {
- \\ var to_char: [*c]u8 = @as([*c]u8, @ptrCast(@alignCast(p)));
- \\ _ = &to_char;
- \\ var to_short: [*c]c_short = @as([*c]c_short, @ptrCast(@alignCast(p)));
- \\ _ = &to_short;
- \\ var to_int: [*c]c_int = @as([*c]c_int, @ptrCast(@alignCast(p)));
- \\ _ = &to_int;
- \\ var to_longlong: [*c]c_longlong = @as([*c]c_longlong, @ptrCast(@alignCast(p)));
- \\ _ = &to_longlong;
- \\ }
- \\}
- });
-
- cases.add("while on non-bool",
- \\int while_none_bool() {
- \\ int a;
- \\ float b;
- \\ void *c;
- \\ while (a) return 0;
- \\ while (b) return 1;
- \\ while (c) return 2;
- \\ return 3;
- \\}
- , &[_][]const u8{
- \\pub export fn while_none_bool() c_int {
- \\ var a: c_int = undefined;
- \\ _ = &a;
- \\ var b: f32 = undefined;
- \\ _ = &b;
- \\ var c: ?*anyopaque = undefined;
- \\ _ = &c;
- \\ while (a != 0) return 0;
- \\ while (b != 0) return 1;
- \\ while (c != null) return 2;
- \\ return 3;
- \\}
- });
-
- cases.add("for on non-bool",
- \\int for_none_bool() {
- \\ int a;
- \\ float b;
- \\ void *c;
- \\ for (;a;) return 0;
- \\ for (;b;) return 1;
- \\ for (;c;) return 2;
- \\ return 3;
- \\}
- , &[_][]const u8{
- \\pub export fn for_none_bool() c_int {
- \\ var a: c_int = undefined;
- \\ _ = &a;
- \\ var b: f32 = undefined;
- \\ _ = &b;
- \\ var c: ?*anyopaque = undefined;
- \\ _ = &c;
- \\ while (a != 0) return 0;
- \\ while (b != 0) return 1;
- \\ while (c != null) return 2;
- \\ return 3;
- \\}
- });
-
- cases.add("bitshift",
- \\int foo(void) {
- \\ return (1 << 2) >> 1;
- \\}
- , &[_][]const u8{
- \\pub export fn foo() c_int {
- \\ return (@as(c_int, 1) << @intCast(2)) >> @intCast(1);
- \\}
- });
-
- cases.add("sizeof",
- \\#include <stddef.h>
- \\size_t size_of(void) {
- \\ return sizeof(int);
- \\}
- , &[_][]const u8{
- \\pub export fn size_of() usize {
- \\ return @sizeOf(c_int);
- \\}
- });
-
- cases.add("normal deref",
- \\void foo() {
- \\ int *x;
- \\ *x = 1;
- \\}
- , &[_][]const u8{
- \\pub export fn foo() void {
- \\ var x: [*c]c_int = undefined;
- \\ _ = &x;
- \\ x.* = 1;
- \\}
- });
-
- cases.add("address of operator",
- \\int foo(void) {
- \\ int x = 1234;
- \\ int *ptr = &x;
- \\ return *ptr;
- \\}
- , &[_][]const u8{
- \\pub export fn foo() c_int {
- \\ var x: c_int = 1234;
- \\ _ = &x;
- \\ var ptr: [*c]c_int = &x;
- \\ _ = &ptr;
- \\ return ptr.*;
- \\}
- });
-
- cases.add("bin not",
- \\int foo() {
- \\ int x;
- \\ return ~x;
- \\}
- , &[_][]const u8{
- \\pub export fn foo() c_int {
- \\ var x: c_int = undefined;
- \\ _ = &x;
- \\ return ~x;
- \\}
- });
-
- cases.add("bool not",
- \\int foo() {
- \\ int a;
- \\ float b;
- \\ void *c;
- \\ return !(a == 0);
- \\ return !a;
- \\ return !b;
- \\ return !c;
- \\}
- , &[_][]const u8{
- \\pub export fn foo() c_int {
- \\ var a: c_int = undefined;
- \\ _ = &a;
- \\ var b: f32 = undefined;
- \\ _ = &b;
- \\ var c: ?*anyopaque = undefined;
- \\ _ = &c;
- \\ return @intFromBool(!(a == @as(c_int, 0)));
- \\ return @intFromBool(!(a != 0));
- \\ return @intFromBool(!(b != 0));
- \\ return @intFromBool(!(c != null));
- \\}
- });
-
- cases.add("__extension__ cast",
- \\int foo(void) {
- \\ return __extension__ 1;
- \\}
- , &[_][]const u8{
- \\pub export fn foo() c_int {
- \\ return 1;
- \\}
- });
-
- if (builtin.os.tag != .windows) {
- // sysv_abi not currently supported on windows
- cases.add("Macro qualified functions",
- \\void __attribute__((sysv_abi)) foo(void);
- , &[_][]const u8{
- \\pub extern fn foo() void;
- });
- }
-
- cases.add("Forward-declared enum",
- \\extern enum enum_ty my_enum;
- \\enum enum_ty { FOO };
- , &[_][]const u8{
- \\pub const FOO: c_int = 0;
- \\pub const enum_enum_ty = c_int;
- \\pub extern var my_enum: enum_enum_ty;
- });
-
- cases.add("Parameterless function pointers",
- \\typedef void (*fn0)();
- \\typedef void (*fn1)(char);
- , &[_][]const u8{
- \\pub const fn0 = ?*const fn (...) callconv(.c) void;
- \\pub const fn1 = ?*const fn (u8) callconv(.c) void;
- });
-
- cases.addWithTarget("Calling convention", .{
- .cpu_arch = .x86,
- .os_tag = .linux,
- .abi = .none,
- },
- \\void __attribute__((fastcall)) foo1(float *a);
- \\void __attribute__((stdcall)) foo2(float *a);
- \\void __attribute__((vectorcall)) foo3(float *a);
- \\void __attribute__((cdecl)) foo4(float *a);
- \\void __attribute__((thiscall)) foo5(float *a);
- , &[_][]const u8{
- \\pub extern fn foo1(a: [*c]f32) callconv(.{ .x86_fastcall = .{} }) void;
- \\pub extern fn foo2(a: [*c]f32) callconv(.{ .x86_stdcall = .{} }) void;
- \\pub extern fn foo3(a: [*c]f32) callconv(.{ .x86_vectorcall = .{} }) void;
- \\pub extern fn foo4(a: [*c]f32) void;
- \\pub extern fn foo5(a: [*c]f32) callconv(.{ .x86_thiscall = .{} }) void;
- });
-
- cases.addWithTarget("Calling convention", std.Target.Query.parse(.{
- .arch_os_abi = "arm-linux-none",
- .cpu_features = "generic+v8_5a",
- }) catch unreachable,
- \\void __attribute__((pcs("aapcs"))) foo1(float *a);
- \\void __attribute__((pcs("aapcs-vfp"))) foo2(float *a);
- , &[_][]const u8{
- \\pub extern fn foo1(a: [*c]f32) callconv(.{ .arm_aapcs = .{} }) void;
- \\pub extern fn foo2(a: [*c]f32) callconv(.{ .arm_aapcs_vfp = .{} }) void;
- });
-
- cases.addWithTarget("Calling convention", std.Target.Query.parse(.{
- .arch_os_abi = "aarch64-linux-none",
- .cpu_features = "generic+v8_5a",
- }) catch unreachable,
- \\void __attribute__((aarch64_vector_pcs)) foo1(float *a);
- , &[_][]const u8{
- \\pub extern fn foo1(a: [*c]f32) callconv(.{ .aarch64_vfabi = .{} }) void;
- });
-
- cases.add("Parameterless function prototypes",
- \\void a() {}
- \\void b(void) {}
- \\void c();
- \\void d(void);
- \\static void e() {}
- \\static void f(void) {}
- \\static void g();
- \\static void h(void);
- , &[_][]const u8{
- \\pub export fn a() void {}
- \\pub export fn b() void {}
- \\pub extern fn c(...) void;
- \\pub extern fn d() void;
- \\pub fn e() callconv(.c) void {}
- \\pub fn f() callconv(.c) void {}
- \\pub extern fn g() void;
- \\pub extern fn h() void;
- });
-
- cases.add("variable declarations",
- \\extern char arr0[] = "hello";
- \\static char arr1[] = "hello";
- \\char arr2[] = "hello";
- , &[_][]const u8{
- \\pub export var arr0: [5:0]u8 = "hello".*;
- \\pub var arr1: [5:0]u8 = "hello".*;
- \\pub export var arr2: [5:0]u8 = "hello".*;
- });
-
- cases.add("array initializer expr",
- \\static void foo(void){
- \\ char arr[10] ={1};
- \\ char *arr1[10] ={0};
- \\}
- , &[_][]const u8{
- \\pub fn foo() callconv(.c) void {
- \\ var arr: [10]u8 = [1]u8{
- \\ 1,
- \\ } ++ [1]u8{0} ** 9;
- \\ _ = &arr;
- \\ var arr1: [10][*c]u8 = [1][*c]u8{
- \\ null,
- \\ } ++ [1][*c]u8{null} ** 9;
- \\ _ = &arr1;
- \\}
- });
-
- cases.add("enums",
- \\typedef enum {
- \\ a,
- \\ b,
- \\ c,
- \\} d;
- \\enum {
- \\ e,
- \\ f = 4,
- \\ g,
- \\} h = e;
- \\struct Baz {
- \\ enum {
- \\ i,
- \\ j,
- \\ k,
- \\ } l;
- \\ d m;
- \\};
- \\enum i {
- \\ n,
- \\ o,
- \\ p,
- \\};
- , &[_][]const u8{
- \\pub const a: c_int = 0;
- \\pub const b: c_int = 1;
- \\pub const c: c_int = 2;
- \\pub const d =
- ++ " " ++ default_enum_type ++
- \\;
- \\pub const e: c_int = 0;
- \\pub const f: c_int = 4;
- \\pub const g: c_int = 5;
- \\const enum_unnamed_1 =
- ++ " " ++ default_enum_type ++
- \\;
- \\pub export var h: enum_unnamed_1 = @as(c_uint, @bitCast(e));
- \\pub const i: c_int = 0;
- \\pub const j: c_int = 1;
- \\pub const k: c_int = 2;
- \\const enum_unnamed_2 =
- ++ " " ++ default_enum_type ++
- \\;
- \\pub const struct_Baz = extern struct {
- \\ l: enum_unnamed_2 = @import("std").mem.zeroes(enum_unnamed_2),
- \\ m: d = @import("std").mem.zeroes(d),
- \\};
- \\pub const n: c_int = 0;
- \\pub const o: c_int = 1;
- \\pub const p: c_int = 2;
- \\pub const enum_i =
- ++ " " ++ default_enum_type ++
- \\;
- ,
- "pub const Baz = struct_Baz;",
- });
-
- cases.add("#define a char literal",
- \\#define A_CHAR 'a'
- , &[_][]const u8{
- \\pub const A_CHAR = 'a';
- });
-
- cases.add("comment after integer literal",
- \\#define SDL_INIT_VIDEO 0x00000020 /**< SDL_INIT_VIDEO implies SDL_INIT_EVENTS */
- , &[_][]const u8{
- \\pub const SDL_INIT_VIDEO = @as(c_int, 0x00000020);
- });
-
- cases.add("u integer suffix after hex literal",
- \\#define SDL_INIT_VIDEO 0x00000020u /**< SDL_INIT_VIDEO implies SDL_INIT_EVENTS */
- , &[_][]const u8{
- \\pub const SDL_INIT_VIDEO = @as(c_uint, 0x00000020);
- });
-
- cases.add("l integer suffix after hex literal",
- \\#define SDL_INIT_VIDEO 0x00000020l /**< SDL_INIT_VIDEO implies SDL_INIT_EVENTS */
- , &[_][]const u8{
- \\pub const SDL_INIT_VIDEO = @as(c_long, 0x00000020);
- });
-
- cases.add("ul integer suffix after hex literal",
- \\#define SDL_INIT_VIDEO 0x00000020ul /**< SDL_INIT_VIDEO implies SDL_INIT_EVENTS */
- , &[_][]const u8{
- \\pub const SDL_INIT_VIDEO = @as(c_ulong, 0x00000020);
- });
-
- cases.add("lu integer suffix after hex literal",
- \\#define SDL_INIT_VIDEO 0x00000020lu /**< SDL_INIT_VIDEO implies SDL_INIT_EVENTS */
- , &[_][]const u8{
- \\pub const SDL_INIT_VIDEO = @as(c_ulong, 0x00000020);
- });
-
- cases.add("ll integer suffix after hex literal",
- \\#define SDL_INIT_VIDEO 0x00000020ll /**< SDL_INIT_VIDEO implies SDL_INIT_EVENTS */
- , &[_][]const u8{
- \\pub const SDL_INIT_VIDEO = @as(c_longlong, 0x00000020);
- });
-
- cases.add("ull integer suffix after hex literal",
- \\#define SDL_INIT_VIDEO 0x00000020ull /**< SDL_INIT_VIDEO implies SDL_INIT_EVENTS */
- , &[_][]const u8{
- \\pub const SDL_INIT_VIDEO = @as(c_ulonglong, 0x00000020);
- });
-
- cases.add("llu integer suffix after hex literal",
- \\#define SDL_INIT_VIDEO 0x00000020llu /**< SDL_INIT_VIDEO implies SDL_INIT_EVENTS */
- , &[_][]const u8{
- \\pub const SDL_INIT_VIDEO = @as(c_ulonglong, 0x00000020);
- });
-
- cases.add("generate inline func for #define global extern fn",
- \\extern void (*fn_ptr)(void);
- \\#define foo fn_ptr
- \\
- \\extern char (*fn_ptr2)(int, float);
- \\#define bar fn_ptr2
- , &[_][]const u8{
- \\pub extern var fn_ptr: ?*const fn () callconv(.c) void;
- ,
- \\pub inline fn foo() void {
- \\ return fn_ptr.?();
- \\}
- ,
- \\pub extern var fn_ptr2: ?*const fn (c_int, f32) callconv(.c) u8;
- ,
- \\pub inline fn bar(arg_1: c_int, arg_2: f32) u8 {
- \\ return fn_ptr2.?(arg_1, arg_2);
- \\}
- });
-
- cases.add("macros with field targets",
- \\typedef unsigned int GLbitfield;
- \\typedef void (*PFNGLCLEARPROC) (GLbitfield mask);
- \\typedef void(*OpenGLProc)(void);
- \\union OpenGLProcs {
- \\ OpenGLProc ptr[1];
- \\ struct {
- \\ PFNGLCLEARPROC Clear;
- \\ } gl;
- \\};
- \\extern union OpenGLProcs glProcs;
- \\#define glClearUnion glProcs.gl.Clear
- \\#define glClearPFN PFNGLCLEARPROC
- , &[_][]const u8{
- \\pub const GLbitfield = c_uint;
- \\pub const PFNGLCLEARPROC = ?*const fn (GLbitfield) callconv(.c) void;
- \\pub const OpenGLProc = ?*const fn () callconv(.c) void;
- \\const struct_unnamed_1 = extern struct {
- \\ Clear: PFNGLCLEARPROC = @import("std").mem.zeroes(PFNGLCLEARPROC),
- \\};
- \\pub const union_OpenGLProcs = extern union {
- \\ ptr: [1]OpenGLProc,
- \\ gl: struct_unnamed_1,
- \\};
- \\pub extern var glProcs: union_OpenGLProcs;
- ,
- \\pub const glClearPFN = PFNGLCLEARPROC;
- ,
- \\pub inline fn glClearUnion(arg_2: GLbitfield) void {
- \\ return glProcs.gl.Clear.?(arg_2);
- \\}
- ,
- \\pub const OpenGLProcs = union_OpenGLProcs;
- });
-
- cases.add("macro pointer cast",
- \\#define NRF_GPIO_BASE 0
- \\typedef struct { int dummy; } NRF_GPIO_Type;
- \\#define NRF_GPIO ((NRF_GPIO_Type *) NRF_GPIO_BASE)
- , &[_][]const u8{
- \\pub const NRF_GPIO = @import("std").zig.c_translation.cast([*c]NRF_GPIO_Type, NRF_GPIO_BASE);
- });
-
- cases.add("basic macro function",
- \\extern int c;
- \\#define BASIC(c) (c*2)
- \\#define FOO(L,b) (L + b)
- \\#define BAR() (c*c)
- , &[_][]const u8{
- \\pub extern var c: c_int;
- ,
- \\pub inline fn BASIC(c_1: anytype) @TypeOf(c_1 * @as(c_int, 2)) {
- \\ _ = &c_1;
- \\ return c_1 * @as(c_int, 2);
- \\}
- ,
- \\pub inline fn FOO(L: anytype, b: anytype) @TypeOf(L + b) {
- \\ _ = &L;
- \\ _ = &b;
- \\ return L + b;
- \\}
- ,
- \\pub inline fn BAR() @TypeOf(c * c) {
- \\ return c * c;
- \\}
- });
-
- cases.add("macro defines string literal with hex",
- \\#define FOO "aoeu\xab derp"
- \\#define FOO2 "aoeu\x0007a derp"
- \\#define FOO_CHAR '\xfF'
- , &[_][]const u8{
- \\pub const FOO = "aoeu\xab derp";
- ,
- \\pub const FOO2 = "aoeu\x7a derp";
- ,
- \\pub const FOO_CHAR = '\xff';
- });
-
- cases.add("macro add",
- \\#define D3_AHB1PERIPH_BASE 0
- \\#define PERIPH_BASE (0x40000000UL) /*!< Base address of : AHB/APB Peripherals */
- \\#define D3_APB1PERIPH_BASE (PERIPH_BASE + 0x18000000UL)
- \\#define RCC_BASE (D3_AHB1PERIPH_BASE + 0x4400UL)
- , &[_][]const u8{
- \\pub const PERIPH_BASE = @as(c_ulong, 0x40000000);
- ,
- \\pub const D3_APB1PERIPH_BASE = PERIPH_BASE + @as(c_ulong, 0x18000000);
- ,
- \\pub const RCC_BASE = D3_AHB1PERIPH_BASE + @as(c_ulong, 0x4400);
- });
-
- cases.add("variable aliasing",
- \\static long a = 2;
- \\static long b = 2;
- \\static int c = 4;
- \\void foo(char c) {
- \\ int a;
- \\ char b = 123;
- \\ b = (char) a;
- \\ {
- \\ int d = 5;
- \\ }
- \\ unsigned d = 440;
- \\}
- , &[_][]const u8{
- \\pub var a: c_long = 2;
- \\pub var b: c_long = 2;
- \\pub var c: c_int = 4;
- \\pub export fn foo(arg_c_1: u8) void {
- \\ var c_1 = arg_c_1;
- \\ _ = &c_1;
- \\ var a_2: c_int = undefined;
- \\ _ = &a_2;
- \\ var b_3: u8 = 123;
- \\ _ = &b_3;
- \\ b_3 = @as(u8, @bitCast(@as(i8, @truncate(a_2))));
- \\ {
- \\ var d: c_int = 5;
- \\ _ = &d;
- \\ }
- \\ var d: c_uint = @as(c_uint, @bitCast(@as(c_int, 440)));
- \\ _ = &d;
- \\}
- });
-
- cases.add("comma operator",
- \\int foo() {
- \\ 2, 4;
- \\ return 2, 4, 6;
- \\}
- , &[_][]const u8{
- \\pub export fn foo() c_int {
- \\ _ = blk: {
- \\ _ = @as(c_int, 2);
- \\ break :blk @as(c_int, 4);
- \\ };
- \\ return blk: {
- \\ _ = blk_1: {
- \\ _ = @as(c_int, 2);
- \\ break :blk_1 @as(c_int, 4);
- \\ };
- \\ break :blk @as(c_int, 6);
- \\ };
- \\}
- });
-
- cases.add("worst-case assign",
- \\void foo() {
- \\ int a;
- \\ int b;
- \\ a = b = 2;
- \\}
- , &[_][]const u8{
- \\pub export fn foo() void {
- \\ var a: c_int = undefined;
- \\ _ = &a;
- \\ var b: c_int = undefined;
- \\ _ = &b;
- \\ a = blk: {
- \\ const tmp = @as(c_int, 2);
- \\ b = tmp;
- \\ break :blk tmp;
- \\ };
- \\}
- });
-
- cases.add("while loops",
- \\int foo() {
- \\ int a = 5;
- \\ while (2)
- \\ a = 2;
- \\ while (4) {
- \\ int a = 4;
- \\ a = 9;
- \\ return 6, a;
- \\ }
- \\ do {
- \\ int a = 2;
- \\ a = 12;
- \\ } while (4);
- \\ do
- \\ a = 7;
- \\ while (4);
- \\}
- , &[_][]const u8{
- \\pub export fn foo() c_int {
- \\ var a: c_int = 5;
- \\ _ = &a;
- \\ while (true) {
- \\ a = 2;
- \\ }
- \\ while (true) {
- \\ var a_1: c_int = 4;
- \\ _ = &a_1;
- \\ a_1 = 9;
- \\ return blk: {
- \\ _ = @as(c_int, 6);
- \\ break :blk a_1;
- \\ };
- \\ }
- \\ while (true) {
- \\ var a_1: c_int = 2;
- \\ _ = &a_1;
- \\ a_1 = 12;
- \\ }
- \\ while (true) {
- \\ a = 7;
- \\ }
- \\ return 0;
- \\}
- });
-
- cases.add("for loops",
- \\void foo() {
- \\ for (int i = 2, b = 4; i + 2; i = 2) {
- \\ int a = 2;
- \\ a = 6, 5, 7;
- \\ }
- \\ char i = 2;
- \\}
- , &[_][]const u8{
- \\pub export fn foo() void {
- \\ {
- \\ var i: c_int = 2;
- \\ _ = &i;
- \\ var b: c_int = 4;
- \\ _ = &b;
- \\ while ((i + @as(c_int, 2)) != 0) : (i = 2) {
- \\ var a: c_int = 2;
- \\ _ = &a;
- \\ _ = blk: {
- \\ _ = blk_1: {
- \\ a = 6;
- \\ break :blk_1 @as(c_int, 5);
- \\ };
- \\ break :blk @as(c_int, 7);
- \\ };
- \\ }
- \\ }
- \\ var i: u8 = 2;
- \\ _ = &i;
- \\}
- });
-
- cases.add("shadowing primitive types",
- \\unsigned anyerror = 2;
- \\#define noreturn _Noreturn
- \\typedef enum {
- \\ f32,
- \\ u32,
- \\} BadEnum;
- , &[_][]const u8{
- \\pub export var @"anyerror": c_uint = 2;
- ,
- \\pub const @"noreturn" = @compileError("unable to translate C expr: unexpected token '_Noreturn'");
- ,
- \\pub const @"f32": c_int = 0;
- \\pub const @"u32": c_int = 1;
- \\pub const BadEnum = c_uint;
- });
-
- cases.add("floats",
- \\float a = 3.1415;
- \\double b = 3.1415;
- \\int c = 3.1415;
- \\double d = 3;
- , &[_][]const u8{
- \\pub export var a: f32 = @as(f32, @floatCast(3.1415));
- \\pub export var b: f64 = 3.1415;
- \\pub export var c: c_int = @as(c_int, @intFromFloat(3.1415));
- \\pub export var d: f64 = 3;
- });
-
- cases.add("conditional operator",
- \\int bar(void) {
- \\ if (2 ? 5 : 5 ? 4 : 6) 2;
- \\ return 2 ? 5 : 5 ? 4 : 6;
- \\}
- , &[_][]const u8{
- \\pub export fn bar() c_int {
- \\ if ((if (true) @as(c_int, 5) else if (true) @as(c_int, 4) else @as(c_int, 6)) != 0) {
- \\ _ = @as(c_int, 2);
- \\ }
- \\ return if (true) @as(c_int, 5) else if (true) @as(c_int, 4) else @as(c_int, 6);
- \\}
- });
-
- cases.add("switch on int",
- \\void switch_fn(int i) {
- \\ int res = 0;
- \\ switch (i) {
- \\ case 0:
- \\ res = 1;
- \\ case 1 ... 3:
- \\ res = 2;
- \\ default:
- \\ res = 3 * i;
- \\ break;
- \\ break;
- \\ case 7: {
- \\ res = 7;
- \\ break;
- \\ }
- \\ case 4:
- \\ case 5:
- \\ res = 69;
- \\ {
- \\ res = 5;
- \\ return;
- \\ }
- \\ case 6:
- \\ switch (res) {
- \\ case 9: break;
- \\ }
- \\ res = 1;
- \\ return;
- \\ }
- \\}
- , &[_][]const u8{
- \\pub export fn switch_fn(arg_i: c_int) void {
- \\ var i = arg_i;
- \\ _ = &i;
- \\ var res: c_int = 0;
- \\ _ = &res;
- \\ while (true) {
- \\ switch (i) {
- \\ @as(c_int, 0) => {
- \\ res = 1;
- \\ res = 2;
- \\ res = @as(c_int, 3) * i;
- \\ break;
- \\ },
- \\ @as(c_int, 1)...@as(c_int, 3) => {
- \\ res = 2;
- \\ res = @as(c_int, 3) * i;
- \\ break;
- \\ },
- \\ else => {
- \\ res = @as(c_int, 3) * i;
- \\ break;
- \\ },
- \\ @as(c_int, 7) => {
- \\ {
- \\ res = 7;
- \\ break;
- \\ }
- \\ },
- \\ @as(c_int, 4), @as(c_int, 5) => {
- \\ res = 69;
- \\ {
- \\ res = 5;
- \\ return;
- \\ }
- \\ },
- \\ @as(c_int, 6) => {
- \\ while (true) {
- \\ switch (res) {
- \\ @as(c_int, 9) => break,
- \\ else => {},
- \\ }
- \\ break;
- \\ }
- \\ res = 1;
- \\ return;
- \\ },
- \\ }
- \\ break;
- \\ }
- \\}
- });
- cases.add("undefined array global",
- \\int array[100] = {};
- , &[_][]const u8{
- \\pub export var array: [100]c_int = [1]c_int{0} ** 100;
- });
-
- cases.add("restrict -> noalias",
- \\void foo(void *restrict bar, void *restrict);
- , &[_][]const u8{
- \\pub extern fn foo(noalias bar: ?*anyopaque, noalias ?*anyopaque) void;
- });
-
- cases.add("assign",
- \\void max(int a) {
- \\ int tmp;
- \\ tmp = a;
- \\ a = tmp;
- \\}
- , &[_][]const u8{
- \\pub export fn max(arg_a: c_int) void {
- \\ var a = arg_a;
- \\ _ = &a;
- \\ var tmp: c_int = undefined;
- \\ _ = &tmp;
- \\ tmp = a;
- \\ a = tmp;
- \\}
- });
-
- cases.add("chaining assign",
- \\void max(int a) {
- \\ int b, c;
- \\ c = b = a;
- \\}
- , &[_][]const u8{
- \\pub export fn max(arg_a: c_int) void {
- \\ var a = arg_a;
- \\ _ = &a;
- \\ var b: c_int = undefined;
- \\ _ = &b;
- \\ var c: c_int = undefined;
- \\ _ = &c;
- \\ c = blk: {
- \\ const tmp = a;
- \\ b = tmp;
- \\ break :blk tmp;
- \\ };
- \\}
- });
-
- cases.add("anonymous enum",
- \\enum {
- \\ One,
- \\ Two,
- \\};
- , &[_][]const u8{
- \\pub const One: c_int = 0;
- \\pub const Two: c_int = 1;
- \\const enum_unnamed_1 =
- ++ " " ++ default_enum_type ++
- \\;
- });
-
- cases.add("c style cast",
- \\int int_from_float(float a) {
- \\ return (int)a;
- \\}
- , &[_][]const u8{
- \\pub export fn int_from_float(arg_a: f32) c_int {
- \\ var a = arg_a;
- \\ _ = &a;
- \\ return @as(c_int, @intFromFloat(a));
- \\}
- });
-
- cases.add("escape sequences",
- \\const char *escapes() {
- \\char a = '\'',
- \\ b = '\\',
- \\ c = '\a',
- \\ d = '\b',
- \\ e = '\f',
- \\ f = '\n',
- \\ g = '\r',
- \\ h = '\t',
- \\ i = '\v',
- \\ j = '\0',
- \\ k = '\"';
- \\ return "\'\\\a\b\f\n\r\t\v\0\"";
- \\}
- \\
- , &[_][]const u8{
- \\pub export fn escapes() [*c]const u8 {
- \\ var a: u8 = '\'';
- \\ _ = &a;
- \\ var b: u8 = '\\';
- \\ _ = &b;
- \\ var c: u8 = '\x07';
- \\ _ = &c;
- \\ var d: u8 = '\x08';
- \\ _ = &d;
- \\ var e: u8 = '\x0c';
- \\ _ = &e;
- \\ var f: u8 = '\n';
- \\ _ = &f;
- \\ var g: u8 = '\r';
- \\ _ = &g;
- \\ var h: u8 = '\t';
- \\ _ = &h;
- \\ var i: u8 = '\x0b';
- \\ _ = &i;
- \\ var j: u8 = '\x00';
- \\ _ = &j;
- \\ var k: u8 = '"';
- \\ _ = &k;
- \\ return "'\\\x07\x08\x0c\n\r\t\x0b\x00\"";
- \\}
- });
-
- cases.add("do loop",
- \\void foo(void) {
- \\ int a = 2;
- \\ do {
- \\ a = a - 1;
- \\ } while (a);
- \\
- \\ int b = 2;
- \\ do
- \\ b = b -1;
- \\ while (b);
- \\}
- , &[_][]const u8{
- \\pub export fn foo() void {
- \\ var a: c_int = 2;
- \\ _ = &a;
- \\ while (true) {
- \\ a = a - @as(c_int, 1);
- \\ if (!(a != 0)) break;
- \\ }
- \\ var b: c_int = 2;
- \\ _ = &b;
- \\ while (true) {
- \\ b = b - @as(c_int, 1);
- \\ if (!(b != 0)) break;
- \\ }
- \\}
- });
-
- cases.add("logical and, logical or, on non-bool values, extra parens",
- \\enum Foo {
- \\ FooA,
- \\ FooB,
- \\ FooC,
- \\};
- \\typedef int SomeTypedef;
- \\int and_or_non_bool(int a, float b, void *c) {
- \\ enum Foo d = FooA;
- \\ int e = (a && b);
- \\ int f = (b && c);
- \\ int g = (a && c);
- \\ int h = (a || b);
- \\ int i = (b || c);
- \\ int j = (a || c);
- \\ int k = (a || (int)d);
- \\ int l = ((int)d && b);
- \\ int m = (c || (unsigned int)d);
- \\ SomeTypedef td = 44;
- \\ int o = (td || b);
- \\ int p = (c && td);
- \\ return ((((((((((e + f) + g) + h) + i) + j) + k) + l) + m) + o) + p);
- \\}
- , &[_][]const u8{
- \\pub const FooA: c_int = 0;
- \\pub const FooB: c_int = 1;
- \\pub const FooC: c_int = 2;
- \\pub const enum_Foo =
- ++ " " ++ default_enum_type ++
- \\;
- \\pub const SomeTypedef = c_int;
- \\pub export fn and_or_non_bool(arg_a: c_int, arg_b: f32, arg_c: ?*anyopaque) c_int {
- \\ var a = arg_a;
- \\ _ = &a;
- \\ var b = arg_b;
- \\ _ = &b;
- \\ var c = arg_c;
- \\ _ = &c;
- \\ var d: enum_Foo = @as(c_uint, @bitCast(FooA));
- \\ _ = &d;
- \\ var e: c_int = @intFromBool((a != 0) and (b != 0));
- \\ _ = &e;
- \\ var f: c_int = @intFromBool((b != 0) and (c != null));
- \\ _ = &f;
- \\ var g: c_int = @intFromBool((a != 0) and (c != null));
- \\ _ = &g;
- \\ var h: c_int = @intFromBool((a != 0) or (b != 0));
- \\ _ = &h;
- \\ var i: c_int = @intFromBool((b != 0) or (c != null));
- \\ _ = &i;
- \\ var j: c_int = @intFromBool((a != 0) or (c != null));
- \\ _ = &j;
- \\ var k: c_int = @intFromBool((a != 0) or (@as(c_int, @bitCast(d)) != 0));
- \\ _ = &k;
- \\ var l: c_int = @intFromBool((@as(c_int, @bitCast(d)) != 0) and (b != 0));
- \\ _ = &l;
- \\ var m: c_int = @intFromBool((c != null) or (d != 0));
- \\ _ = &m;
- \\ var td: SomeTypedef = 44;
- \\ _ = &td;
- \\ var o: c_int = @intFromBool((td != 0) or (b != 0));
- \\ _ = &o;
- \\ var p: c_int = @intFromBool((c != null) and (td != 0));
- \\ _ = &p;
- \\ return (((((((((e + f) + g) + h) + i) + j) + k) + l) + m) + o) + p;
- \\}
- ,
- \\pub const Foo = enum_Foo;
- });
-
- cases.add("bitwise binary operators, simpler parens",
- \\int max(int a, int b) {
- \\ return (a & b) ^ (a | b);
- \\}
- , &[_][]const u8{
- \\pub export fn max(arg_a: c_int, arg_b: c_int) c_int {
- \\ var a = arg_a;
- \\ _ = &a;
- \\ var b = arg_b;
- \\ _ = &b;
- \\ return (a & b) ^ (a | b);
- \\}
- });
-
- cases.add("comparison operators (no if)", // TODO Come up with less contrived tests? Make sure to cover all these comparisons.
- \\int test_comparisons(int a, int b) {
- \\ int c = (a < b);
- \\ int d = (a > b);
- \\ int e = (a <= b);
- \\ int f = (a >= b);
- \\ int g = (c < d);
- \\ int h = (e < f);
- \\ int i = (g < h);
- \\ return i;
- \\}
- , &[_][]const u8{
- \\pub export fn test_comparisons(arg_a: c_int, arg_b: c_int) c_int {
- \\ var a = arg_a;
- \\ _ = &a;
- \\ var b = arg_b;
- \\ _ = &b;
- \\ var c: c_int = @intFromBool(a < b);
- \\ _ = &c;
- \\ var d: c_int = @intFromBool(a > b);
- \\ _ = &d;
- \\ var e: c_int = @intFromBool(a <= b);
- \\ _ = &e;
- \\ var f: c_int = @intFromBool(a >= b);
- \\ _ = &f;
- \\ var g: c_int = @intFromBool(c < d);
- \\ _ = &g;
- \\ var h: c_int = @intFromBool(e < f);
- \\ _ = &h;
- \\ var i: c_int = @intFromBool(g < h);
- \\ _ = &i;
- \\ return i;
- \\}
- });
-
- cases.add("==, !=",
- \\int max(int a, int b) {
- \\ if (a == b)
- \\ return a;
- \\ if (a != b)
- \\ return b;
- \\ return a;
- \\}
- , &[_][]const u8{
- \\pub export fn max(arg_a: c_int, arg_b: c_int) c_int {
- \\ var a = arg_a;
- \\ _ = &a;
- \\ var b = arg_b;
- \\ _ = &b;
- \\ if (a == b) return a;
- \\ if (a != b) return b;
- \\ return a;
- \\}
- });
-
- cases.add("typedeffed bool expression",
- \\typedef char* yes;
- \\void foo(void) {
- \\ yes a;
- \\ if (a) 2;
- \\}
- , &[_][]const u8{
- \\pub const yes = [*c]u8;
- \\pub export fn foo() void {
- \\ var a: yes = undefined;
- \\ _ = &a;
- \\ if (a != null) {
- \\ _ = @as(c_int, 2);
- \\ }
- \\}
- });
-
- cases.add("statement expression",
- \\int foo(void) {
- \\ return ({
- \\ int a = 1;
- \\ a;
- \\ a;
- \\ });
- \\}
- , &[_][]const u8{
- \\pub export fn foo() c_int {
- \\ return blk: {
- \\ var a: c_int = 1;
- \\ _ = &a;
- \\ _ = &a;
- \\ break :blk a;
- \\ };
- \\}
- });
-
- cases.add("field access expression",
- \\#define ARROW a->b
- \\#define DOT a.b
- \\extern struct Foo {
- \\ int b;
- \\}a;
- \\float b = 2.0f;
- \\void foo(void) {
- \\ struct Foo *c;
- \\ a.b;
- \\ c->b;
- \\}
- , &[_][]const u8{
- \\pub const struct_Foo = extern struct {
- \\ b: c_int = @import("std").mem.zeroes(c_int),
- \\};
- \\pub extern var a: struct_Foo;
- \\pub export var b: f32 = 2.0;
- \\pub export fn foo() void {
- \\ var c: [*c]struct_Foo = undefined;
- \\ _ = &c;
- \\ _ = a.b;
- \\ _ = c.*.b;
- \\}
- ,
- \\pub inline fn ARROW() @TypeOf(a.*.b) {
- \\ return a.*.b;
- \\}
- ,
- \\pub inline fn DOT() @TypeOf(a.b) {
- \\ return a.b;
- \\}
- });
-
- cases.add("array access",
- \\#define ACCESS array[2]
- \\int array[100] = {};
- \\int foo(int index) {
- \\ return array[index];
- \\}
- , &[_][]const u8{
- \\pub export var array: [100]c_int = [1]c_int{0} ** 100;
- \\pub export fn foo(arg_index: c_int) c_int {
- \\ var index = arg_index;
- \\ _ = &index;
- \\ return array[@as(c_uint, @intCast(index))];
- \\}
- ,
- \\pub inline fn ACCESS() @TypeOf(array[@as(usize, @intCast(@as(c_int, 2)))]) {
- \\ return array[@as(usize, @intCast(@as(c_int, 2)))];
- \\}
- });
-
- cases.add("cast signed array index to unsigned",
- \\void foo() {
- \\ int a[10], i = 0;
- \\ a[i] = 0;
- \\}
- , &[_][]const u8{
- \\pub export fn foo() void {
- \\ var a: [10]c_int = undefined;
- \\ _ = &a;
- \\ var i: c_int = 0;
- \\ _ = &i;
- \\ a[@as(c_uint, @intCast(i))] = 0;
- \\}
- });
-
- cases.add("long long array index cast to usize",
- \\void foo() {
- \\ long long a[10], i = 0;
- \\ a[i] = 0;
- \\}
- , &[_][]const u8{
- \\pub export fn foo() void {
- \\ var a: [10]c_longlong = undefined;
- \\ _ = &a;
- \\ var i: c_longlong = 0;
- \\ _ = &i;
- \\ a[@as(usize, @intCast(i))] = 0;
- \\}
- });
-
- cases.add("unsigned array index skips cast",
- \\void foo() {
- \\ unsigned int a[10], i = 0;
- \\ a[i] = 0;
- \\}
- , &[_][]const u8{
- \\pub export fn foo() void {
- \\ var a: [10]c_uint = undefined;
- \\ _ = &a;
- \\ var i: c_uint = 0;
- \\ _ = &i;
- \\ a[i] = 0;
- \\}
- });
-
- cases.add("macro call",
- \\#define CALL(arg) bar(arg)
- \\int bar(int x) { return x; }
- , &[_][]const u8{
- \\pub inline fn CALL(arg: anytype) @TypeOf(bar(arg)) {
- \\ _ = &arg;
- \\ return bar(arg);
- \\}
- });
-
- cases.add("macro call with no args",
- \\#define CALL(arg) bar()
- \\int bar(void) { return 0; }
- , &[_][]const u8{
- \\pub inline fn CALL(arg: anytype) @TypeOf(bar()) {
- \\ _ = &arg;
- \\ return bar();
- \\}
- });
-
- cases.add("logical and, logical or",
- \\int max(int a, int b) {
- \\ if (a < b || a == b)
- \\ return b;
- \\ if (a >= b && a == b)
- \\ return a;
- \\ return a;
- \\}
- , &[_][]const u8{
- \\pub export fn max(arg_a: c_int, arg_b: c_int) c_int {
- \\ var a = arg_a;
- \\ _ = &a;
- \\ var b = arg_b;
- \\ _ = &b;
- \\ if ((a < b) or (a == b)) return b;
- \\ if ((a >= b) and (a == b)) return a;
- \\ return a;
- \\}
- });
-
- cases.add("simple if statement",
- \\int max(int a, int b) {
- \\ if (a < b)
- \\ return b;
- \\
- \\ if (a < b)
- \\ return b;
- \\ else
- \\ return a;
- \\
- \\ if (a < b) ; else ;
- \\}
- , &[_][]const u8{
- \\pub export fn max(arg_a: c_int, arg_b: c_int) c_int {
- \\ var a = arg_a;
- \\ _ = &a;
- \\ var b = arg_b;
- \\ _ = &b;
- \\ if (a < b) return b;
- \\ if (a < b) return b else return a;
- \\ if (a < b) {} else {}
- \\ return 0;
- \\}
- });
-
- cases.add("if statements",
- \\void foo() {
- \\ if (2) {
- \\ int a = 2;
- \\ }
- \\ if (2, 5) {
- \\ int a = 2;
- \\ }
- \\}
- , &[_][]const u8{
- \\pub export fn foo() void {
- \\ if (true) {
- \\ var a: c_int = 2;
- \\ _ = &a;
- \\ }
- \\ if ((blk: {
- \\ _ = @as(c_int, 2);
- \\ break :blk @as(c_int, 5);
- \\ }) != 0) {
- \\ var a: c_int = 2;
- \\ _ = &a;
- \\ }
- \\}
- });
-
- cases.add("if on non-bool",
- \\enum SomeEnum { A, B, C };
- \\int if_none_bool(int a, float b, void *c, enum SomeEnum d) {
- \\ if (a) return 0;
- \\ if (b) return 1;
- \\ if (c) return 2;
- \\ if (d) return 3;
- \\ return 4;
- \\}
- , &[_][]const u8{
- \\pub const A: c_int = 0;
- \\pub const B: c_int = 1;
- \\pub const C: c_int = 2;
- \\pub const enum_SomeEnum =
- ++ " " ++ default_enum_type ++
- \\;
- \\pub export fn if_none_bool(arg_a: c_int, arg_b: f32, arg_c: ?*anyopaque, arg_d: enum_SomeEnum) c_int {
- \\ var a = arg_a;
- \\ _ = &a;
- \\ var b = arg_b;
- \\ _ = &b;
- \\ var c = arg_c;
- \\ _ = &c;
- \\ var d = arg_d;
- \\ _ = &d;
- \\ if (a != 0) return 0;
- \\ if (b != 0) return 1;
- \\ if (c != null) return 2;
- \\ if (d != 0) return 3;
- \\ return 4;
- \\}
- });
-
- cases.add("simple data types",
- \\#include <stdint.h>
- \\int foo(char a, unsigned char b, signed char c);
- \\int foo(char a, unsigned char b, signed char c); // test a duplicate prototype
- \\void bar(uint8_t a, uint16_t b, uint32_t c, uint64_t d);
- \\void baz(int8_t a, int16_t b, int32_t c, int64_t d);
- , &[_][]const u8{
- \\pub extern fn foo(a: u8, b: u8, c: i8) c_int;
- \\pub extern fn bar(a: u8, b: u16, c: u32, d: u64) void;
- \\pub extern fn baz(a: i8, b: i16, c: i32, d: i64) void;
- });
-
- cases.add("simple function",
- \\int abs(int a) {
- \\ return a < 0 ? -a : a;
- \\}
- , &[_][]const u8{
- \\pub export fn abs(arg_a: c_int) c_int {
- \\ var a = arg_a;
- \\ _ = &a;
- \\ return if (a < @as(c_int, 0)) -a else a;
- \\}
- });
-
- cases.add("post increment",
- \\unsigned foo1(unsigned a) {
- \\ a++;
- \\ return a;
- \\}
- \\int foo2(int a) {
- \\ a++;
- \\ return a;
- \\}
- \\int *foo3(int *a) {
- \\ a++;
- \\ return a;
- \\}
- , &[_][]const u8{
- \\pub export fn foo1(arg_a: c_uint) c_uint {
- \\ var a = arg_a;
- \\ _ = &a;
- \\ a +%= 1;
- \\ return a;
- \\}
- \\pub export fn foo2(arg_a: c_int) c_int {
- \\ var a = arg_a;
- \\ _ = &a;
- \\ a += 1;
- \\ return a;
- \\}
- \\pub export fn foo3(arg_a: [*c]c_int) [*c]c_int {
- \\ var a = arg_a;
- \\ _ = &a;
- \\ a += 1;
- \\ return a;
- \\}
- });
-
- cases.add("deref function pointer",
- \\void foo(void) {}
- \\int baz(void) { return 0; }
- \\void bar(void) {
- \\ void(*f)(void) = foo;
- \\ int(*b)(void) = baz;
- \\ f();
- \\ (*(f))();
- \\ foo();
- \\ b();
- \\ (*(b))();
- \\ baz();
- \\}
- , &[_][]const u8{
- \\pub export fn foo() void {}
- \\pub export fn baz() c_int {
- \\ return 0;
- \\}
- \\pub export fn bar() void {
- \\ var f: ?*const fn () callconv(.c) void = &foo;
- \\ _ = &f;
- \\ var b: ?*const fn () callconv(.c) c_int = &baz;
- \\ _ = &b;
- \\ f.?();
- \\ f.?();
- \\ foo();
- \\ _ = b.?();
- \\ _ = b.?();
- \\ _ = baz();
- \\}
- });
-
- cases.add("pre increment/decrement",
- \\void foo(void) {
- \\ int i = 0;
- \\ unsigned u = 0;
- \\ ++i;
- \\ --i;
- \\ ++u;
- \\ --u;
- \\ i = ++i;
- \\ i = --i;
- \\ u = ++u;
- \\ u = --u;
- \\}
- , &[_][]const u8{
- \\pub export fn foo() void {
- \\ var i: c_int = 0;
- \\ _ = &i;
- \\ var u: c_uint = 0;
- \\ _ = &u;
- \\ i += 1;
- \\ i -= 1;
- \\ u +%= 1;
- \\ u -%= 1;
- \\ i = blk: {
- \\ const ref = &i;
- \\ ref.* += 1;
- \\ break :blk ref.*;
- \\ };
- \\ i = blk: {
- \\ const ref = &i;
- \\ ref.* -= 1;
- \\ break :blk ref.*;
- \\ };
- \\ u = blk: {
- \\ const ref = &u;
- \\ ref.* +%= 1;
- \\ break :blk ref.*;
- \\ };
- \\ u = blk: {
- \\ const ref = &u;
- \\ ref.* -%= 1;
- \\ break :blk ref.*;
- \\ };
- \\}
- });
-
- cases.add("shift right assign",
- \\int log2(unsigned a) {
- \\ int i = 0;
- \\ while (a > 0) {
- \\ a >>= 1;
- \\ }
- \\ return i;
- \\}
- , &[_][]const u8{
- \\pub export fn log2(arg_a: c_uint) c_int {
- \\ var a = arg_a;
- \\ _ = &a;
- \\ var i: c_int = 0;
- \\ _ = &i;
- \\ while (a > @as(c_uint, @bitCast(@as(c_int, 0)))) {
- \\ a >>= @intCast(@as(c_int, 1));
- \\ }
- \\ return i;
- \\}
- });
-
- cases.add("shift right assign with a fixed size type",
- \\#include <stdint.h>
- \\int log2(uint32_t a) {
- \\ int i = 0;
- \\ while (a > 0) {
- \\ a >>= 1;
- \\ }
- \\ return i;
- \\}
- , &[_][]const u8{
- \\pub export fn log2(arg_a: u32) c_int {
- \\ var a = arg_a;
- \\ _ = &a;
- \\ var i: c_int = 0;
- \\ _ = &i;
- \\ while (a > @as(u32, @bitCast(@as(c_int, 0)))) {
- \\ a >>= @intCast(@as(c_int, 1));
- \\ }
- \\ return i;
- \\}
- });
-
- cases.add("compound assignment operators",
- \\void foo(void) {
- \\ int a = 0;
- \\ unsigned b = 0;
- \\ a += (a += 1);
- \\ a -= (a -= 1);
- \\ a *= (a *= 1);
- \\ a &= (a &= 1);
- \\ a |= (a |= 1);
- \\ a ^= (a ^= 1);
- \\ a >>= (a >>= 1);
- \\ a <<= (a <<= 1);
- \\ a /= (a /= 1);
- \\ a %= (a %= 1);
- \\ b /= (b /= 1);
- \\ b %= (b %= 1);
- \\}
- , &[_][]const u8{
- \\pub export fn foo() void {
- \\ var a: c_int = 0;
- \\ _ = &a;
- \\ var b: c_uint = 0;
- \\ _ = &b;
- \\ a += blk: {
- \\ const ref = &a;
- \\ ref.* += @as(c_int, 1);
- \\ break :blk ref.*;
- \\ };
- \\ a -= blk: {
- \\ const ref = &a;
- \\ ref.* -= @as(c_int, 1);
- \\ break :blk ref.*;
- \\ };
- \\ a *= blk: {
- \\ const ref = &a;
- \\ ref.* *= @as(c_int, 1);
- \\ break :blk ref.*;
- \\ };
- \\ a &= blk: {
- \\ const ref = &a;
- \\ ref.* &= @as(c_int, 1);
- \\ break :blk ref.*;
- \\ };
- \\ a |= blk: {
- \\ const ref = &a;
- \\ ref.* |= @as(c_int, 1);
- \\ break :blk ref.*;
- \\ };
- \\ a ^= blk: {
- \\ const ref = &a;
- \\ ref.* ^= @as(c_int, 1);
- \\ break :blk ref.*;
- \\ };
- \\ a >>= @intCast(blk: {
- \\ const ref = &a;
- \\ ref.* >>= @intCast(@as(c_int, 1));
- \\ break :blk ref.*;
- \\ });
- \\ a <<= @intCast(blk: {
- \\ const ref = &a;
- \\ ref.* <<= @intCast(@as(c_int, 1));
- \\ break :blk ref.*;
- \\ });
- \\ a = @divTrunc(a, blk: {
- \\ const ref = &a;
- \\ ref.* = @divTrunc(ref.*, @as(c_int, 1));
- \\ break :blk ref.*;
- \\ });
- \\ a = @import("std").zig.c_translation.signedRemainder(a, blk: {
- \\ const ref = &a;
- \\ ref.* = @import("std").zig.c_translation.signedRemainder(ref.*, @as(c_int, 1));
- \\ break :blk ref.*;
- \\ });
- \\ b /= blk: {
- \\ const ref = &b;
- \\ ref.* /= @as(c_uint, @bitCast(@as(c_int, 1)));
- \\ break :blk ref.*;
- \\ };
- \\ b %= blk: {
- \\ const ref = &b;
- \\ ref.* %= @as(c_uint, @bitCast(@as(c_int, 1)));
- \\ break :blk ref.*;
- \\ };
- \\}
- });
-
- cases.add("compound assignment operators unsigned",
- \\void foo(void) {
- \\ unsigned a = 0;
- \\ a += (a += 1);
- \\ a -= (a -= 1);
- \\ a *= (a *= 1);
- \\ a &= (a &= 1);
- \\ a |= (a |= 1);
- \\ a ^= (a ^= 1);
- \\ a >>= (a >>= 1);
- \\ a <<= (a <<= 1);
- \\}
- , &[_][]const u8{
- \\pub export fn foo() void {
- \\ var a: c_uint = 0;
- \\ _ = &a;
- \\ a +%= blk: {
- \\ const ref = &a;
- \\ ref.* +%= @as(c_uint, @bitCast(@as(c_int, 1)));
- \\ break :blk ref.*;
- \\ };
- \\ a -%= blk: {
- \\ const ref = &a;
- \\ ref.* -%= @as(c_uint, @bitCast(@as(c_int, 1)));
- \\ break :blk ref.*;
- \\ };
- \\ a *%= blk: {
- \\ const ref = &a;
- \\ ref.* *%= @as(c_uint, @bitCast(@as(c_int, 1)));
- \\ break :blk ref.*;
- \\ };
- \\ a &= blk: {
- \\ const ref = &a;
- \\ ref.* &= @as(c_uint, @bitCast(@as(c_int, 1)));
- \\ break :blk ref.*;
- \\ };
- \\ a |= blk: {
- \\ const ref = &a;
- \\ ref.* |= @as(c_uint, @bitCast(@as(c_int, 1)));
- \\ break :blk ref.*;
- \\ };
- \\ a ^= blk: {
- \\ const ref = &a;
- \\ ref.* ^= @as(c_uint, @bitCast(@as(c_int, 1)));
- \\ break :blk ref.*;
- \\ };
- \\ a >>= @intCast(blk: {
- \\ const ref = &a;
- \\ ref.* >>= @intCast(@as(c_int, 1));
- \\ break :blk ref.*;
- \\ });
- \\ a <<= @intCast(blk: {
- \\ const ref = &a;
- \\ ref.* <<= @intCast(@as(c_int, 1));
- \\ break :blk ref.*;
- \\ });
- \\}
- });
-
- cases.add("post increment/decrement",
- \\void foo(void) {
- \\ int i = 0;
- \\ unsigned u = 0;
- \\ i++;
- \\ i--;
- \\ u++;
- \\ u--;
- \\ i = i++;
- \\ i = i--;
- \\ u = u++;
- \\ u = u--;
- \\}
- , &[_][]const u8{
- \\pub export fn foo() void {
- \\ var i: c_int = 0;
- \\ _ = &i;
- \\ var u: c_uint = 0;
- \\ _ = &u;
- \\ i += 1;
- \\ i -= 1;
- \\ u +%= 1;
- \\ u -%= 1;
- \\ i = blk: {
- \\ const ref = &i;
- \\ const tmp = ref.*;
- \\ ref.* += 1;
- \\ break :blk tmp;
- \\ };
- \\ i = blk: {
- \\ const ref = &i;
- \\ const tmp = ref.*;
- \\ ref.* -= 1;
- \\ break :blk tmp;
- \\ };
- \\ u = blk: {
- \\ const ref = &u;
- \\ const tmp = ref.*;
- \\ ref.* +%= 1;
- \\ break :blk tmp;
- \\ };
- \\ u = blk: {
- \\ const ref = &u;
- \\ const tmp = ref.*;
- \\ ref.* -%= 1;
- \\ break :blk tmp;
- \\ };
- \\}
- });
-
- cases.add("implicit casts",
- \\#include <stdbool.h>
- \\
- \\void fn_int(int x);
- \\void fn_f32(float x);
- \\void fn_f64(double x);
- \\void fn_char(char x);
- \\void fn_bool(bool x);
- \\void fn_ptr(void *x);
- \\
- \\void call() {
- \\ fn_int(3.0f);
- \\ fn_int(3.0);
- \\ fn_int('ABCD');
- \\ fn_f32(3);
- \\ fn_f64(3);
- \\ fn_char('3');
- \\ fn_char('\x1');
- \\ fn_char(0);
- \\ fn_f32(3.0f);
- \\ fn_f64(3.0);
- \\ fn_bool(123);
- \\ fn_bool(0);
- \\ fn_bool(&fn_int);
- \\ fn_int((int)&fn_int);
- \\ fn_ptr((void *)42);
- \\}
- , &[_][]const u8{
- \\pub extern fn fn_int(x: c_int) void;
- \\pub extern fn fn_f32(x: f32) void;
- \\pub extern fn fn_f64(x: f64) void;
- \\pub extern fn fn_char(x: u8) void;
- \\pub extern fn fn_bool(x: bool) void;
- \\pub extern fn fn_ptr(x: ?*anyopaque) void;
- \\pub export fn call() void {
- \\ fn_int(@as(c_int, @intFromFloat(3.0)));
- \\ fn_int(@as(c_int, @intFromFloat(3.0)));
- \\ fn_int(@as(c_int, 1094861636));
- \\ fn_f32(@as(f32, @floatFromInt(@as(c_int, 3))));
- \\ fn_f64(@as(f64, @floatFromInt(@as(c_int, 3))));
- \\ fn_char(@as(u8, @bitCast(@as(i8, @truncate(@as(c_int, '3'))))));
- \\ fn_char(@as(u8, @bitCast(@as(i8, @truncate(@as(c_int, '\x01'))))));
- \\ fn_char(@as(u8, @bitCast(@as(i8, @truncate(@as(c_int, 0))))));
- \\ fn_f32(3.0);
- \\ fn_f64(3.0);
- \\ fn_bool(@as(c_int, 123) != 0);
- \\ fn_bool(@as(c_int, 0) != 0);
- \\ fn_bool(@intFromPtr(&fn_int) != 0);
- \\ fn_int(@as(c_int, @intCast(@intFromPtr(&fn_int))));
- \\ fn_ptr(@as(?*anyopaque, @ptrFromInt(@as(c_int, 42))));
- \\}
- });
-
- cases.add("function call",
- \\static void bar(void) { }
- \\void foo(int *(baz)(void)) {
- \\ bar();
- \\ baz();
- \\}
- , &[_][]const u8{
- \\pub fn bar() callconv(.c) void {}
- \\pub export fn foo(arg_baz: ?*const fn () callconv(.c) [*c]c_int) void {
- \\ var baz = arg_baz;
- \\ _ = &baz;
- \\ bar();
- \\ _ = baz.?();
- \\}
- });
-
- cases.add("macro defines string literal with octal",
- \\#define FOO "aoeu\023 derp"
- \\#define FOO2 "aoeu\0234 derp"
- \\#define FOO_CHAR '\077'
- , &[_][]const u8{
- \\pub const FOO = "aoeu\x13 derp";
- ,
- \\pub const FOO2 = "aoeu\x134 derp";
- ,
- \\pub const FOO_CHAR = '\x3f';
- });
-
- cases.add("macro cast",
- \\#include <stdint.h>
- \\int baz(void *arg) { return 0; }
- \\#define FOO(bar) baz((void *)(baz))
- \\#define BAR (void*) a
- \\#define BAZ (uint32_t)(2)
- \\#define a 2
- , &[_][]const u8{
- \\pub inline fn FOO(bar: anytype) @TypeOf(baz(@import("std").zig.c_translation.cast(?*anyopaque, baz))) {
- \\ _ = &bar;
- \\ return baz(@import("std").zig.c_translation.cast(?*anyopaque, baz));
- \\}
- ,
- \\pub const BAR = @import("std").zig.c_translation.cast(?*anyopaque, a);
- ,
- \\pub const BAZ = @import("std").zig.c_translation.cast(u32, @as(c_int, 2));
- });
-
- cases.add("macro with cast to unsigned short, long, and long long",
- \\#define CURLAUTH_BASIC_BUT_USHORT ((unsigned short) 1)
- \\#define CURLAUTH_BASIC ((unsigned long) 1)
- \\#define CURLAUTH_BASIC_BUT_ULONGLONG ((unsigned long long) 1)
- , &[_][]const u8{
- \\pub const CURLAUTH_BASIC_BUT_USHORT = @import("std").zig.c_translation.cast(c_ushort, @as(c_int, 1));
- \\pub const CURLAUTH_BASIC = @import("std").zig.c_translation.cast(c_ulong, @as(c_int, 1));
- \\pub const CURLAUTH_BASIC_BUT_ULONGLONG = @import("std").zig.c_translation.cast(c_ulonglong, @as(c_int, 1));
- });
-
- cases.add("macro conditional operator",
- \\ int a, b, c;
- \\#define FOO a ? b : c
- , &[_][]const u8{
- \\pub inline fn FOO() @TypeOf(if (a) b else c) {
- \\ return if (a) b else c;
- \\}
- });
-
- cases.add("do while as expr",
- \\static void foo(void) {
- \\ if (1)
- \\ do {} while (0);
- \\}
- , &[_][]const u8{
- \\pub fn foo() callconv(.c) void {
- \\ if (true) while (true) {
- \\ if (!false) break;
- \\ };
- \\}
- });
-
- cases.add("macro comparisons",
- \\#define MIN(a, b) ((b) < (a) ? (b) : (a))
- \\#define MAX(a, b) ((b) > (a) ? (b) : (a))
- , &[_][]const u8{
- \\pub inline fn MIN(a: anytype, b: anytype) @TypeOf(if (b < a) b else a) {
- \\ _ = &a;
- \\ _ = &b;
- \\ return if (b < a) b else a;
- \\}
- ,
- \\pub inline fn MAX(a: anytype, b: anytype) @TypeOf(if (b > a) b else a) {
- \\ _ = &a;
- \\ _ = &b;
- \\ return if (b > a) b else a;
- \\}
- });
-
- cases.add("nested assignment",
- \\int foo(int *p, int x) {
- \\ return *p++ = x;
- \\}
- , &[_][]const u8{
- \\pub export fn foo(arg_p: [*c]c_int, arg_x: c_int) c_int {
- \\ var p = arg_p;
- \\ _ = &p;
- \\ var x = arg_x;
- \\ _ = &x;
- \\ return blk: {
- \\ const tmp = x;
- \\ (blk_1: {
- \\ const ref = &p;
- \\ const tmp_2 = ref.*;
- \\ ref.* += 1;
- \\ break :blk_1 tmp_2;
- \\ }).* = tmp;
- \\ break :blk tmp;
- \\ };
- \\}
- });
-
- cases.add("widening and truncating integer casting to different signedness",
- \\unsigned long foo(void) {
- \\ return -1;
- \\}
- \\unsigned short bar(long x) {
- \\ return x;
- \\}
- , &[_][]const u8{
- \\pub export fn foo() c_ulong {
- \\ return @as(c_ulong, @bitCast(@as(c_long, -@as(c_int, 1))));
- \\}
- \\pub export fn bar(arg_x: c_long) c_ushort {
- \\ var x = arg_x;
- \\ _ = &x;
- \\ return @as(c_ushort, @bitCast(@as(c_short, @truncate(x))));
- \\}
- });
-
- cases.add("arg name aliasing decl which comes after",
- \\void foo(int bar) {
- \\ bar = 2;
- \\}
- \\int bar = 4;
- , &[_][]const u8{
- \\pub export fn foo(arg_bar_1: c_int) void {
- \\ var bar_1 = arg_bar_1;
- \\ _ = &bar_1;
- \\ bar_1 = 2;
- \\}
- \\pub export var bar: c_int = 4;
- });
-
- cases.add("arg name aliasing macro which comes after",
- \\void foo(int bar) {
- \\ bar = 2;
- \\}
- \\#define bar 4
- , &[_][]const u8{
- \\pub export fn foo(arg_bar_1: c_int) void {
- \\ var bar_1 = arg_bar_1;
- \\ _ = &bar_1;
- \\ bar_1 = 2;
- \\}
- ,
- \\pub const bar = @as(c_int, 4);
- });
-
- cases.add("don't export inline functions",
- \\inline void a(void) {}
- \\static void b(void) {}
- \\void c(void) {}
- \\static void foo() {}
- , &[_][]const u8{
- \\pub fn a() callconv(.c) void {}
- \\pub fn b() callconv(.c) void {}
- \\pub export fn c() void {}
- \\pub fn foo() callconv(.c) void {}
- });
-
- cases.add("casting away const and volatile",
- \\void foo(int *a) {}
- \\void bar(const int *a) {
- \\ foo((int *)a);
- \\}
- \\void baz(volatile int *a) {
- \\ foo((int *)a);
- \\}
- , &[_][]const u8{
- \\pub export fn foo(arg_a: [*c]c_int) void {
- \\ var a = arg_a;
- \\ _ = &a;
- \\}
- \\pub export fn bar(arg_a: [*c]const c_int) void {
- \\ var a = arg_a;
- \\ _ = &a;
- \\ foo(@as([*c]c_int, @ptrCast(@constCast(@volatileCast(a)))));
- \\}
- \\pub export fn baz(arg_a: [*c]volatile c_int) void {
- \\ var a = arg_a;
- \\ _ = &a;
- \\ foo(@as([*c]c_int, @ptrCast(@constCast(@volatileCast(a)))));
- \\}
- });
-
- cases.add("handling of _Bool type",
- \\_Bool foo(_Bool x) {
- \\ _Bool a = x != 1;
- \\ _Bool b = a != 0;
- \\ _Bool c = foo;
- \\ return foo(c != b);
- \\}
- , &[_][]const u8{
- \\pub export fn foo(arg_x: bool) bool {
- \\ var x = arg_x;
- \\ _ = &x;
- \\ var a: bool = @as(c_int, @intFromBool(x)) != @as(c_int, 1);
- \\ _ = &a;
- \\ var b: bool = @as(c_int, @intFromBool(a)) != @as(c_int, 0);
- \\ _ = &b;
- \\ var c: bool = @intFromPtr(&foo) != 0;
- \\ _ = &c;
- \\ return foo(@as(c_int, @intFromBool(c)) != @as(c_int, @intFromBool(b)));
- \\}
- });
-
- cases.add("Don't make const parameters mutable",
- \\int max(const int x, int y) {
- \\ return (x > y) ? x : y;
- \\}
- , &[_][]const u8{
- \\pub export fn max(x: c_int, arg_y: c_int) c_int {
- \\ _ = &x;
- \\ var y = arg_y;
- \\ _ = &y;
- \\ return if (x > y) x else y;
- \\}
- });
-
- cases.add("string concatenation in macros",
- \\#define FOO "hello"
- \\#define BAR FOO " world"
- \\#define BAZ "oh, " FOO
- , &[_][]const u8{
- \\pub const FOO = "hello";
- ,
- \\pub const BAR = FOO ++ " world";
- ,
- \\pub const BAZ = "oh, " ++ FOO;
- });
-
- cases.add("string concatenation in macros: two defines",
- \\#define FOO "hello"
- \\#define BAZ " world"
- \\#define BAR FOO BAZ
- , &[_][]const u8{
- \\pub const FOO = "hello";
- ,
- \\pub const BAZ = " world";
- ,
- \\pub const BAR = FOO ++ BAZ;
- });
-
- cases.add("string concatenation in macros: two strings",
- \\#define FOO "a" "b"
- \\#define BAR FOO "c"
- , &[_][]const u8{
- \\pub const FOO = "a" ++ "b";
- ,
- \\pub const BAR = FOO ++ "c";
- });
-
- cases.add("string concatenation in macros: three strings",
- \\#define FOO "a" "b" "c"
- , &[_][]const u8{
- \\pub const FOO = "a" ++ "b" ++ "c";
- });
-
- cases.add("multibyte character literals",
- \\#define FOO 'abcd'
- , &[_][]const u8{
- \\pub const FOO = 0x61626364;
- });
-
- cases.add("Make sure casts are grouped",
- \\typedef struct
- \\{
- \\ int i;
- \\}
- \\*_XPrivDisplay;
- \\typedef struct _XDisplay Display;
- \\#define DefaultScreen(dpy) (((_XPrivDisplay)(dpy))->default_screen)
- \\
- , &[_][]const u8{
- \\pub inline fn DefaultScreen(dpy: anytype) @TypeOf(@import("std").zig.c_translation.cast(_XPrivDisplay, dpy).*.default_screen) {
- \\ _ = &dpy;
- \\ return @import("std").zig.c_translation.cast(_XPrivDisplay, dpy).*.default_screen;
- \\}
- });
-
- cases.add("macro integer literal casts",
- \\#define NULL ((void*)0)
- \\#define FOO ((int)0x8000)
- , &[_][]const u8{
- \\pub const NULL = @import("std").zig.c_translation.cast(?*anyopaque, @as(c_int, 0));
- ,
- \\pub const FOO = @import("std").zig.c_translation.cast(c_int, @import("std").zig.c_translation.promoteIntLiteral(c_int, 0x8000, .hex));
- });
-
- if (builtin.abi == .msvc) {
- cases.add("nameless struct fields",
- \\typedef struct NAMED
- \\{
- \\ long name;
- \\} NAMED;
- \\
- \\typedef struct ONENAMEWITHSTRUCT
- \\{
- \\ NAMED;
- \\ long b;
- \\} ONENAMEWITHSTRUCT;
- , &[_][]const u8{
- \\pub const struct_NAMED = extern struct {
- \\ name: c_long = @import("std").mem.zeroes(c_long),
- \\};
- \\pub const NAMED = struct_NAMED;
- \\pub const struct_ONENAMEWITHSTRUCT = extern struct {
- \\ unnamed_0: struct_NAMED = = @import("std").mem.zeroes(struct_NAMED),
- \\ b: c_long = @import("std").mem.zeroes(c_long),
- \\};
- });
- } else {
- cases.add("nameless struct fields",
- \\typedef struct NAMED
- \\{
- \\ long name;
- \\} NAMED;
- \\
- \\typedef struct ONENAMEWITHSTRUCT
- \\{
- \\ NAMED;
- \\ long b;
- \\} ONENAMEWITHSTRUCT;
- , &[_][]const u8{
- \\pub const struct_NAMED = extern struct {
- \\ name: c_long = @import("std").mem.zeroes(c_long),
- \\};
- \\pub const NAMED = struct_NAMED;
- \\pub const struct_ONENAMEWITHSTRUCT = extern struct {
- \\ b: c_long = @import("std").mem.zeroes(c_long),
- \\};
- });
- }
-
- cases.add("integer literal promotion",
- \\#define GUARANTEED_TO_FIT_1 1024
- \\#define GUARANTEED_TO_FIT_2 10241024L
- \\#define GUARANTEED_TO_FIT_3 20482048LU
- \\#define MAY_NEED_PROMOTION_1 10241024
- \\#define MAY_NEED_PROMOTION_2 307230723072L
- \\#define MAY_NEED_PROMOTION_3 819281928192LU
- \\#define MAY_NEED_PROMOTION_HEX 0x80000000
- \\#define MAY_NEED_PROMOTION_OCT 020000000000
- , &[_][]const u8{
- \\pub const GUARANTEED_TO_FIT_1 = @as(c_int, 1024);
- \\pub const GUARANTEED_TO_FIT_2 = @as(c_long, 10241024);
- \\pub const GUARANTEED_TO_FIT_3 = @as(c_ulong, 20482048);
- \\pub const MAY_NEED_PROMOTION_1 = @import("std").zig.c_translation.promoteIntLiteral(c_int, 10241024, .decimal);
- \\pub const MAY_NEED_PROMOTION_2 = @import("std").zig.c_translation.promoteIntLiteral(c_long, 307230723072, .decimal);
- \\pub const MAY_NEED_PROMOTION_3 = @import("std").zig.c_translation.promoteIntLiteral(c_ulong, 819281928192, .decimal);
- \\pub const MAY_NEED_PROMOTION_HEX = @import("std").zig.c_translation.promoteIntLiteral(c_int, 0x80000000, .hex);
- \\pub const MAY_NEED_PROMOTION_OCT = @import("std").zig.c_translation.promoteIntLiteral(c_int, 0o20000000000, .octal);
- });
-
- cases.add("demote un-implemented builtins",
- \\#define FOO(X) __builtin_alloca_with_align((X), 8)
- , &[_][]const u8{
- \\pub const FOO = @compileError("unable to translate macro: undefined identifier `__builtin_alloca_with_align`");
- });
-
- cases.add("null sentinel arrays when initialized from string literal. Issue #8256",
- \\#include <stdint.h>
- \\char zero[0] = "abc";
- \\uint32_t zero_w[0] = U"💯💯💯";
- \\char empty_incomplete[] = "";
- \\uint32_t empty_incomplete_w[] = U"";
- \\char empty_constant[100] = "";
- \\uint32_t empty_constant_w[100] = U"";
- \\char incomplete[] = "abc";
- \\uint32_t incomplete_w[] = U"💯💯💯";
- \\char truncated[1] = "abc";
- \\uint32_t truncated_w[1] = U"💯💯💯";
- \\char extend[5] = "a";
- \\uint32_t extend_w[5] = U"💯";
- \\char no_null[3] = "abc";
- \\uint32_t no_null_w[3] = U"💯💯💯";
- , &[_][]const u8{
- \\pub export var zero: [0]u8 = [0]u8{};
- \\pub export var zero_w: [0]u32 = [0]u32{};
- \\pub export var empty_incomplete: [1]u8 = [1]u8{0} ** 1;
- \\pub export var empty_incomplete_w: [1]u32 = [1]u32{0} ** 1;
- \\pub export var empty_constant: [100]u8 = [1]u8{0} ** 100;
- \\pub export var empty_constant_w: [100]u32 = [1]u32{0} ** 100;
- \\pub export var incomplete: [3:0]u8 = "abc".*;
- \\pub export var incomplete_w: [3:0]u32 = [3:0]u32{
- \\ '\u{1f4af}',
- \\ '\u{1f4af}',
- \\ '\u{1f4af}',
- \\};
- \\pub export var truncated: [1]u8 = "abc"[0..1].*;
- \\pub export var truncated_w: [1]u32 = [1]u32{
- \\ '\u{1f4af}',
- \\};
- \\pub export var extend: [5]u8 = "a"[0..1].* ++ [1]u8{0} ** 4;
- \\pub export var extend_w: [5]u32 = [1]u32{
- \\ '\u{1f4af}',
- \\} ++ [1]u32{0} ** 4;
- \\pub export var no_null: [3]u8 = "abc".*;
- \\pub export var no_null_w: [3]u32 = [3]u32{
- \\ '\u{1f4af}',
- \\ '\u{1f4af}',
- \\ '\u{1f4af}',
- \\};
- });
-
- cases.add("global assembly",
- \\__asm__(".globl func\n\t"
- \\ ".type func, @function\n\t"
- \\ "func:\n\t"
- \\ ".cfi_startproc\n\t"
- \\ "movl $42, %eax\n\t"
- \\ "ret\n\t"
- \\ ".cfi_endproc");
- , &[_][]const u8{
- \\comptime {
- \\ asm (".globl func\n\t.type func, @function\n\tfunc:\n\t.cfi_startproc\n\tmovl $42, %eax\n\tret\n\t.cfi_endproc");
- \\}
- });
-
- cases.add("Demote function that initializes opaque struct",
- \\struct my_struct {
- \\ unsigned a: 15;
- \\ unsigned: 2;
- \\ unsigned b: 15;
- \\};
- \\void initialize(void) {
- \\ struct my_struct S = {.a = 1, .b = 2};
- \\}
- , &[_][]const u8{
- \\warning: local variable has opaque type
- ,
- \\warning: unable to translate function, demoted to extern
- \\pub extern fn initialize() void;
- });
-
- cases.add("Demote function that dereferences opaque type",
- \\struct my_struct {
- \\ unsigned a: 1;
- \\};
- \\void deref(struct my_struct *s) {
- \\ *s;
- \\}
- , &[_][]const u8{
- \\warning: cannot dereference opaque type
- ,
- \\warning: unable to translate function, demoted to extern
- \\pub extern fn deref(arg_s: ?*struct_my_struct) void;
- });
-
- cases.add("Demote function that dereference types that contain opaque type",
- \\struct inner {
- \\ _Atomic int a;
- \\};
- \\struct outer {
- \\ int thing;
- \\ struct inner sub_struct;
- \\};
- \\void deref(struct outer *s) {
- \\ *s;
- \\}
- , &[_][]const u8{
- \\pub const struct_inner = opaque {};
- ,
- \\pub const struct_outer = extern struct {
- \\ thing: c_int = @import("std").mem.zeroes(c_int),
- \\ sub_struct: struct_inner = @import("std").mem.zeroes(struct_inner),
- \\};
- ,
- \\warning: unable to translate function, demoted to extern
- ,
- \\pub extern fn deref(arg_s: ?*struct_outer) void;
- });
-
- cases.add("Function prototype declared within function",
- \\int foo(void) {
- \\ extern int bar(int, int);
- \\ return bar(1, 2);
- \\}
- , &[_][]const u8{
- \\pub export fn foo() c_int {
- \\ const ExternLocal_bar = struct {
- \\ pub extern fn bar(c_int, c_int) c_int;
- \\ };
- \\ _ = &ExternLocal_bar;
- \\ return ExternLocal_bar.bar(@as(c_int, 1), @as(c_int, 2));
- \\}
- });
-
- cases.add("static local variable zero-initialized if no initializer",
- \\struct FOO {int x; int y;};
- \\int bar(void) {
- \\ static struct FOO foo;
- \\ return foo.x;
- \\}
- , &[_][]const u8{
- \\pub const struct_FOO = extern struct {
- \\ x: c_int = @import("std").mem.zeroes(c_int),
- \\ y: c_int = @import("std").mem.zeroes(c_int),
- \\};
- \\pub export fn bar() c_int {
- \\ const foo = struct {
- \\ var static: struct_FOO = @import("std").mem.zeroes(struct_FOO);
- \\ };
- \\ _ = &foo;
- \\ return foo.static.x;
- \\}
- });
-
- cases.add("macro with nontrivial cast",
- \\#define MAP_FAILED ((void *) -1)
- \\typedef long long LONG_PTR;
- \\#define INVALID_HANDLE_VALUE ((void *)(LONG_PTR)-1)
- , &[_][]const u8{
- \\pub const MAP_FAILED = @import("std").zig.c_translation.cast(?*anyopaque, -@as(c_int, 1));
- \\pub const INVALID_HANDLE_VALUE = @import("std").zig.c_translation.cast(?*anyopaque, @import("std").zig.c_translation.cast(LONG_PTR, -@as(c_int, 1)));
- });
-
- cases.add("discard unused local variables and function parameters",
- \\#define FOO(A, B) (A)
- \\int bar(int x, int y) {
- \\ return x;
- \\}
- , &[_][]const u8{
- \\pub export fn bar(arg_x: c_int, arg_y: c_int) c_int {
- \\ var x = arg_x;
- \\ _ = &x;
- \\ var y = arg_y;
- \\ _ = &y;
- \\ return x;
- \\}
- ,
- \\pub inline fn FOO(A: anytype, B: anytype) @TypeOf(A) {
- \\ _ = &A;
- \\ _ = &B;
- \\ return A;
- \\}
- });
-
- cases.add("Use @ syntax for bare underscore identifier in macro or public symbol",
- \\#define FOO _
- \\int _ = 42;
- , &[_][]const u8{
- \\pub inline fn FOO() @TypeOf(@"_") {
- \\ return @"_";
- \\}
- ,
- \\pub export var @"_": c_int = 42;
- });
-
- cases.add("Macro matching",
- \\#define FOO(X) (X ## U)
- , &[_][]const u8{
- \\pub const FOO = @import("std").zig.c_translation.Macros.U_SUFFIX;
- });
-
- cases.add("Simple array access of pointer with non-negative integer constant",
- \\void foo(int *p) {
- \\ p[0];
- \\ p[1];
- \\}
- , &[_][]const u8{
- \\_ = p[@as(c_uint, @intCast(@as(c_int, 0)))];
- ,
- \\_ = p[@as(c_uint, @intCast(@as(c_int, 1)))];
- });
-
- cases.add("Undefined macro identifier",
- \\#define FOO BAR
- , &[_][]const u8{
- \\pub const FOO = @compileError("unable to translate macro: undefined identifier `BAR`");
- });
-
- cases.add("Macro redefines builtin",
- \\#define FOO __builtin_popcount
- , &[_][]const u8{
- \\pub const FOO = __builtin_popcount;
- });
-
- cases.add("Only consider public decls in `isBuiltinDefined`",
- \\#define FOO std
- , &[_][]const u8{
- \\pub const FOO = @compileError("unable to translate macro: undefined identifier `std`");
- });
-
- cases.add("Macro without a value",
- \\#define FOO
- , &[_][]const u8{
- \\pub const FOO = "";
- });
-
- cases.add("leading zeroes",
- \\#define O_RDONLY 00
- \\#define HELLO 000
- \\#define ZERO 0
- \\#define WORLD 00000123
- , &[_][]const u8{
- \\pub const O_RDONLY = @as(c_int, 0o0);
- \\pub const HELLO = @as(c_int, 0o00);
- \\pub const ZERO = @as(c_int, 0);
- \\pub const WORLD = @as(c_int, 0o0000123);
- });
-
- cases.add("Assign expression from bool to int",
- \\void foo(void) {
- \\ int a;
- \\ if (a = 1 > 0) {}
- \\}
- , &[_][]const u8{
- \\pub export fn foo() void {
- \\ var a: c_int = undefined;
- \\ _ = &a;
- \\ if ((blk: {
- \\ const tmp = @intFromBool(@as(c_int, 1) > @as(c_int, 0));
- \\ a = tmp;
- \\ break :blk tmp;
- \\ }) != 0) {}
- \\}
- });
-
- if (builtin.os.tag == .windows) {
- cases.add("Pointer subtraction with typedef",
- \\typedef char* S;
- \\void foo() {
- \\ S a, b;
- \\ long long c = a - b;
- \\}
- , &[_][]const u8{
- \\pub export fn foo() void {
- \\ var a: S = undefined;
- \\ _ = &a;
- \\ var b: S = undefined;
- \\ _ = &b;
- \\ var c: c_longlong = @divExact(@as(c_longlong, @bitCast(@intFromPtr(a) -% @intFromPtr(b))), @sizeOf(u8));
- \\ _ = &c;
- \\}
- });
- } else {
- cases.add("Pointer subtraction with typedef",
- \\typedef char* S;
- \\void foo() {
- \\ S a, b;
- \\ long c = a - b;
- \\}
- , &[_][]const u8{
- \\pub export fn foo() void {
- \\ var a: S = undefined;
- \\ _ = &a;
- \\ var b: S = undefined;
- \\ _ = &b;
- \\ var c: c_long = @divExact(@as(c_long, @bitCast(@intFromPtr(a) -% @intFromPtr(b))), @sizeOf(u8));
- \\ _ = &c;
- \\}
- });
- }
-
- cases.add("extern array of unknown length",
- \\extern int foo[];
- , &[_][]const u8{
- \\const foo: [*c]c_int = @extern([*c]c_int, .{
- \\ .name = "foo",
- \\});
- });
-
- cases.add("string array initializer",
- \\static const char foo[] = {"bar"};
- , &[_][]const u8{
- \\pub const foo: [3:0]u8 = "bar";
- });
-
- cases.add("worst-case assign from mangle prefix",
- \\void foo() {
- \\ int n, tmp = 1;
- \\ if (n = tmp) {}
- \\}
- , &[_][]const u8{
- \\pub export fn foo() void {
- \\ var n: c_int = undefined;
- \\ _ = &n;
- \\ var tmp: c_int = 1;
- \\ _ = &tmp;
- \\ if ((blk: {
- \\ const tmp_1 = tmp;
- \\ n = tmp_1;
- \\ break :blk tmp_1;
- \\ }) != 0) {}
- \\}
- });
-
- cases.add("worst-case assign to mangle prefix",
- \\void foo() {
- \\ int tmp, n = 1;
- \\ if (tmp = n) {}
- \\}
- , &[_][]const u8{
- \\pub export fn foo() void {
- \\ var tmp: c_int = undefined;
- \\ _ = &tmp;
- \\ var n: c_int = 1;
- \\ _ = &n;
- \\ if ((blk: {
- \\ const tmp_1 = n;
- \\ tmp = tmp_1;
- \\ break :blk tmp_1;
- \\ }) != 0) {}
- \\}
- });
-
- cases.add("worst-case precrement mangle prefix",
- \\void foo() {
- \\ int n, ref = 1;
- \\ if (n = ++ref) {}
- \\}
- , &[_][]const u8{
- \\pub export fn foo() void {
- \\ var n: c_int = undefined;
- \\ _ = &n;
- \\ var ref: c_int = 1;
- \\ _ = &ref;
- \\ if ((blk: {
- \\ const tmp = blk_1: {
- \\ const ref_2 = &ref;
- \\ ref_2.* += 1;
- \\ break :blk_1 ref_2.*;
- \\ };
- \\ n = tmp;
- \\ break :blk tmp;
- \\ }) != 0) {}
- \\}
- });
-
- cases.add("worst-case postcrement mangle prefix",
- \\void foo() {
- \\ int n, ref = 1;
- \\ if (n = ref++) {}
- \\}
- , &[_][]const u8{
- \\pub export fn foo() void {
- \\ var n: c_int = undefined;
- \\ _ = &n;
- \\ var ref: c_int = 1;
- \\ _ = &ref;
- \\ if ((blk: {
- \\ const tmp = blk_1: {
- \\ const ref_2 = &ref;
- \\ const tmp_3 = ref_2.*;
- \\ ref_2.* += 1;
- \\ break :blk_1 tmp_3;
- \\ };
- \\ n = tmp;
- \\ break :blk tmp;
- \\ }) != 0) {}
- \\}
- });
-
- cases.add("worst-case compound assign from mangle prefix",
- \\void foo() {
- \\ int n, ref = 1;
- \\ if (n += ref) {}
- \\}
- , &[_][]const u8{
- \\pub export fn foo() void {
- \\ var n: c_int = undefined;
- \\ _ = &n;
- \\ var ref: c_int = 1;
- \\ _ = &ref;
- \\ if ((blk: {
- \\ const ref_1 = &n;
- \\ ref_1.* += ref;
- \\ break :blk ref_1.*;
- \\ }) != 0) {}
- \\}
- });
-
- cases.add("worst-case compound assign to mangle prefix",
- \\void foo() {
- \\ int ref, n = 1;
- \\ if (ref += n) {}
- \\}
- , &[_][]const u8{
- \\pub export fn foo() void {
- \\ var ref: c_int = undefined;
- \\ _ = &ref;
- \\ var n: c_int = 1;
- \\ _ = &n;
- \\ if ((blk: {
- \\ const ref_1 = &ref;
- \\ ref_1.* += n;
- \\ break :blk ref_1.*;
- \\ }) != 0) {}
- \\}
- });
-
- cases.add("binary conditional operator where condition is the mangle prefix",
- \\void foo() {
- \\ int f = 1;
- \\ int n, cond_temp = 1;
- \\ if (n = (cond_temp)?:(f)) {}
- \\}
- , &[_][]const u8{
- \\pub export fn foo() void {
- \\ var f: c_int = 1;
- \\ _ = &f;
- \\ var n: c_int = undefined;
- \\ _ = &n;
- \\ var cond_temp: c_int = 1;
- \\ _ = &cond_temp;
- \\ if ((blk: {
- \\ const tmp = blk_1: {
- \\ const cond_temp_2 = cond_temp;
- \\ break :blk_1 if (cond_temp_2 != 0) cond_temp_2 else f;
- \\ };
- \\ n = tmp;
- \\ break :blk tmp;
- \\ }) != 0) {}
- \\}
- });
-
- cases.add("binary conditional operator where false_expr is the mangle prefix",
- \\void foo() {
- \\ int cond_temp = 1;
- \\ int n, f = 1;
- \\ if (n = (f)?:(cond_temp)) {}
- \\}
- , &[_][]const u8{
- \\pub export fn foo() void {
- \\ var cond_temp: c_int = 1;
- \\ _ = &cond_temp;
- \\ var n: c_int = undefined;
- \\ _ = &n;
- \\ var f: c_int = 1;
- \\ _ = &f;
- \\ if ((blk: {
- \\ const tmp = blk_1: {
- \\ const cond_temp_2 = f;
- \\ break :blk_1 if (cond_temp_2 != 0) cond_temp_2 else cond_temp;
- \\ };
- \\ n = tmp;
- \\ break :blk tmp;
- \\ }) != 0) {}
- \\}
- });
-
- cases.add("macro using argument as struct name is not translated",
- \\#define FOO(x) struct x
- , &[_][]const u8{
- \\pub const FOO = @compileError("unable to translate macro: untranslatable usage of arg `x`");
- });
-
- cases.add("unsupport declare statement at the last of a compound statement which belongs to a statement expr",
- \\void somefunc(void) {
- \\ int y;
- \\ (void)({y=1; _Static_assert(1);});
- \\}
- , &[_][]const u8{
- \\pub export fn somefunc() void {
- \\ var y: c_int = undefined;
- \\ _ = &y;
- \\ _ = blk: {
- \\ y = 1;
- \\ };
- \\}
- });
-}
build.zig
@@ -90,8 +90,6 @@ pub fn build(b: *std.Build) !void {
const skip_libc = b.option(bool, "skip-libc", "Main test suite skips tests that link libc") orelse false;
const skip_single_threaded = b.option(bool, "skip-single-threaded", "Main test suite skips tests that are single-threaded") orelse false;
const skip_compile_errors = b.option(bool, "skip-compile-errors", "Main test suite skips compile error tests") orelse false;
- const skip_translate_c = b.option(bool, "skip-translate-c", "Main test suite skips translate-c tests") orelse false;
- const skip_run_translated_c = b.option(bool, "skip-run-translated-c", "Main test suite skips run-translated-c tests") orelse skip_translate_c;
const skip_freebsd = b.option(bool, "skip-freebsd", "Main test suite skips targets with freebsd OS") orelse false;
const skip_netbsd = b.option(bool, "skip-netbsd", "Main test suite skips targets with netbsd OS") orelse false;
const skip_windows = b.option(bool, "skip-windows", "Main test suite skips targets with windows OS") orelse false;
@@ -416,7 +414,7 @@ pub fn build(b: *std.Build) !void {
test_step.dependOn(check_fmt);
const test_cases_step = b.step("test-cases", "Run the main compiler test cases");
- try tests.addCases(b, test_cases_step, target, .{
+ try tests.addCases(b, test_cases_step, .{
.test_filters = test_filters,
.test_target_filters = test_target_filters,
.skip_compile_errors = skip_compile_errors,
@@ -428,9 +426,6 @@ pub fn build(b: *std.Build) !void {
.skip_linux = skip_linux,
.skip_llvm = skip_llvm,
.skip_libc = skip_libc,
- }, .{
- .skip_translate_c = skip_translate_c,
- .skip_run_translated_c = skip_run_translated_c,
}, .{
.enable_llvm = enable_llvm,
.llvm_has_m68k = llvm_has_m68k,
@@ -465,27 +460,25 @@ pub fn build(b: *std.Build) !void {
.max_rss = 4000000000,
}));
- if (!skip_translate_c) {
- test_modules_step.dependOn(tests.addModuleTests(b, .{
- .test_filters = test_filters,
- .test_target_filters = test_target_filters,
- .test_extra_targets = test_extra_targets,
- .root_src = "test/c_import.zig",
- .name = "c-import",
- .desc = "Run the @cImport tests",
- .optimize_modes = optimization_modes,
- .include_paths = &.{"test/c_import"},
- .skip_single_threaded = true,
- .skip_non_native = skip_non_native,
- .skip_freebsd = skip_freebsd,
- .skip_netbsd = skip_netbsd,
- .skip_windows = skip_windows,
- .skip_macos = skip_macos,
- .skip_linux = skip_linux,
- .skip_llvm = skip_llvm,
- .skip_libc = skip_libc,
- }));
- }
+ test_modules_step.dependOn(tests.addModuleTests(b, .{
+ .test_filters = test_filters,
+ .test_target_filters = test_target_filters,
+ .test_extra_targets = test_extra_targets,
+ .root_src = "test/c_import.zig",
+ .name = "c-import",
+ .desc = "Run the @cImport tests",
+ .optimize_modes = optimization_modes,
+ .include_paths = &.{"test/c_import"},
+ .skip_single_threaded = true,
+ .skip_non_native = skip_non_native,
+ .skip_freebsd = skip_freebsd,
+ .skip_netbsd = skip_netbsd,
+ .skip_windows = skip_windows,
+ .skip_macos = skip_macos,
+ .skip_linux = skip_linux,
+ .skip_llvm = skip_llvm,
+ .skip_libc = skip_libc,
+ }));
test_modules_step.dependOn(tests.addModuleTests(b, .{
.test_filters = test_filters,
@@ -577,7 +570,6 @@ pub fn build(b: *std.Build) !void {
enable_macos_sdk,
enable_ios_sdk,
enable_symlinks_windows,
- skip_translate_c,
));
test_step.dependOn(tests.addCAbiTests(b, .{
.test_target_filters = test_target_filters,