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fix @bitCast of packed struct literal

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closes #3042
This commit is contained in:
Andrew Kelley 2019-08-19 17:50:37 -04:00
parent 07c5e90601
commit 3dbed54294
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GPG Key ID: 7C5F548F728501A9
2 changed files with 11 additions and 0 deletions
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3
src/ir.cpp
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@ -14802,6 +14802,9 @@ static IrInstruction *ir_resolve_result_raw(IrAnalyze *ira, IrInstruction *suspe
return ira->codegen->invalid_instruction;
}
uint64_t parent_ptr_align = get_ptr_align(ira->codegen, parent_ptr_type);
if ((err = type_resolve(ira->codegen, value_type, ResolveStatusAlignmentKnown))) {
return ira->codegen->invalid_instruction;
}
ZigType *ptr_type = get_pointer_to_type_extra(ira->codegen, value_type,
parent_ptr_type->data.pointer.is_const, parent_ptr_type->data.pointer.is_volatile, PtrLenSingle,
parent_ptr_align, 0, 0, parent_ptr_type->data.pointer.allow_zero);

8
test/stage1/behavior/bitcast.zig
View File

@ -131,3 +131,11 @@ test "bitcast literal [4]u8 param to u32" {
const ip = @bitCast(u32, [_]u8{ 255, 255, 255, 255 });
expect(ip == maxInt(u32));
}
test "bitcast packed struct literal to byte" {
const Foo = packed struct {
value: u8,
};
const casted = @bitCast(u8, Foo{ .value = 0xF });
expect(casted == 0xf);
}