Commit a553947a51
Changed files (3)
src-self-hosted
src-self-hosted/translate_c.zig
@@ -498,7 +498,7 @@ fn declVisitor(c: *Context, decl: *const ZigClangDecl) Error!void {
_ = try transRecordDecl(c, @ptrCast(*const ZigClangRecordDecl, decl));
},
.Var => {
- return visitVarDecl(c, @ptrCast(*const ZigClangVarDecl, decl));
+ return visitVarDecl(c, @ptrCast(*const ZigClangVarDecl, decl), null);
},
.Empty => {
// Do nothing
@@ -679,12 +679,13 @@ fn visitFnDecl(c: *Context, fn_decl: *const ZigClangFunctionDecl) Error!void {
return addTopLevelDecl(c, fn_name, &proto_node.base);
}
-fn visitVarDecl(c: *Context, var_decl: *const ZigClangVarDecl) Error!void {
- const var_name = try c.str(ZigClangNamedDecl_getName_bytes_begin(@ptrCast(*const ZigClangNamedDecl, var_decl)));
+/// if mangled_name is not null, this var decl was declared in a block scope.
+fn visitVarDecl(c: *Context, var_decl: *const ZigClangVarDecl, mangled_name: ?[]const u8) Error!void {
+ const var_name = mangled_name orelse try c.str(ZigClangNamedDecl_getName_bytes_begin(@ptrCast(*const ZigClangNamedDecl, var_decl)));
if (c.global_scope.sym_table.contains(var_name))
return; // Avoid processing this decl twice
const rp = makeRestorePoint(c);
- const visib_tok = try appendToken(c, .Keyword_pub, "pub");
+ const visib_tok = if (mangled_name) |_| null else try appendToken(c, .Keyword_pub, "pub");
const thread_local_token = if (ZigClangVarDecl_getTLSKind(var_decl) == .None)
null
@@ -1582,15 +1583,22 @@ fn transDeclStmtOne(
.Var => {
const var_decl = @ptrCast(*const ZigClangVarDecl, decl);
- const thread_local_token = if (ZigClangVarDecl_getTLSKind(var_decl) == .None)
- null
- else
- try appendToken(c, .Keyword_threadlocal, "threadlocal");
const qual_type = ZigClangVarDecl_getTypeSourceInfo_getType(var_decl);
const name = try c.str(ZigClangNamedDecl_getName_bytes_begin(
@ptrCast(*const ZigClangNamedDecl, var_decl),
));
const mangled_name = try block_scope.makeMangledName(c, name);
+
+ switch (ZigClangVarDecl_getStorageClass(var_decl)) {
+ .Extern, .Static => {
+ // This is actually a global variable, put it in the global scope and reference it.
+ // `_ = mangled_name;`
+ try visitVarDecl(rp.c, var_decl, mangled_name);
+ return try maybeSuppressResult(rp, scope, .unused, try transCreateNodeIdentifier(rp.c, mangled_name));
+ },
+ else => {},
+ }
+
const mut_tok = if (ZigClangQualType_isConstQualified(qual_type))
try appendToken(c, .Keyword_const, "const")
else
@@ -1618,7 +1626,6 @@ fn transDeclStmtOne(
.mut_token = mut_tok,
.semicolon_token = semicolon_token,
}, .{
- .thread_local_token = thread_local_token,
.eq_token = eq_token,
.type_node = type_node,
.init_node = init_node,
test/run_translated_c.zig
@@ -3,6 +3,20 @@ const tests = @import("tests.zig");
const nl = std.cstr.line_sep;
pub fn addCases(cases: *tests.RunTranslatedCContext) void {
+ 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) {
test/translate_c.zig
@@ -3,6 +3,20 @@ const std = @import("std");
const CrossTarget = std.zig.CrossTarget;
pub fn addCases(cases: *tests.TranslateCContext) void {
+ cases.add("extern 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);
+ \\threadlocal var bar_1: c_int = 2;
+ \\pub export fn foo() c_int {
+ \\ _ = bar_1;
+ \\ return 0;
+ \\}
+ });
+
cases.add("missing return stmt",
\\int foo() {}
\\int bar() {
@@ -480,8 +494,9 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
\\ static const char v2[] = "2.2.2";
\\}
, &[_][]const u8{
+ \\const v2: [*c]const u8 = "2.2.2";
\\pub export fn foo() void {
- \\ const v2: [*c]const u8 = "2.2.2";
+ \\ _ = v2;
\\}
});