Commit 72c60acd5d
Changed files (1)
lib
std
lib/std/mem/Allocator.zig
@@ -185,64 +185,6 @@ pub fn create(self: Allocator, comptime T: type) Error!*T {
return &slice[0];
}
-/// Returns an aligned pointer to undefined memory.
-/// Call `destroy` with the result to free the memory.
-pub fn alignedCreate(
- self: Allocator,
- comptime T: type,
- // null means naturally aligned
- comptime alignment: ?u29,
-) Error!*align(alignment orelse @alignOf(T)) T {
- if (@sizeOf(T) == 0) return @as(*T, undefined);
- const slice = try self.allocAdvancedWithRetAddr(T, alignment, 1, .exact, @returnAddress());
- return &slice[0];
-}
-
-test "create" {
- // Non-zero type, greater alignment
- {
- const x = try std.testing.allocator.alignedCreate(u8, @alignOf(u32));
- defer std.testing.allocator.destroy(x);
-
- assert(@typeInfo(@TypeOf(x)).Pointer.alignment == @alignOf(u32));
- }
- // Non-zero type, null alignment
- {
- const x = try std.testing.allocator.alignedCreate(u8, null);
- defer std.testing.allocator.destroy(x);
-
- assert(@typeInfo(@TypeOf(x)).Pointer.alignment == @alignOf(u8));
- }
- // Non-zero type, lesser alignment
- {
- const x = try std.testing.allocator.alignedCreate(u32, @alignOf(u5));
- defer std.testing.allocator.destroy(x);
-
- assert(@typeInfo(@TypeOf(x)).Pointer.alignment == @alignOf(u5));
- }
- // Zero type, greater alignment
- {
- const x = try std.testing.allocator.alignedCreate([0]u8, @alignOf(u32));
- defer std.testing.allocator.destroy(x);
-
- assert(@typeInfo(@TypeOf(x)).Pointer.alignment == @alignOf(void));
- }
- // Zero type, null alignment
- {
- const x = try std.testing.allocator.alignedCreate([0]u8, null);
- defer std.testing.allocator.destroy(x);
-
- assert(@typeInfo(@TypeOf(x)).Pointer.alignment == @alignOf(void));
- }
- // Zero alignment, lesser alignment
- {
- const x = try std.testing.allocator.alignedCreate([0]u8, @alignOf(u5));
- defer std.testing.allocator.destroy(x);
-
- assert(@typeInfo(@TypeOf(x)).Pointer.alignment == @alignOf(void));
- }
-}
-
/// `ptr` should be the return value of `create`, or otherwise
/// have the same address and alignment property.
pub fn destroy(self: Allocator, ptr: anytype) void {