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CBE: handle returning undefined for ErrorUnion

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Just like for Struct in 8238d4b33585a715c58ab559cd001dd3ea1db55b, in the
case of ErrorUnion struct we need to return a compound literal "(T){...}"
instead of just "{}", which is invalid code when used in e.g. a "return"
expression.
This commit is contained in:
Daniele Cocca 2022-04-30 07:34:21 +01:00 committed by Andrew Kelley
parent 032c722d20
commit d127c1d59e
2 changed files with 1 additions and 3 deletions
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2
src/codegen/c.zig
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@ -580,7 +580,7 @@ pub const DeclGen = struct {
64 => return writer.writeAll("(void *)0xaaaaaaaaaaaaaaaa"),
else => unreachable,
},
.Struct => {
.Struct, .ErrorUnion => {
try writer.writeByte('(');
try dg.renderTypecast(writer, ty);
return writer.writeAll("){0xaa}");

2
test/behavior/sizeof_and_typeof.zig
View File

@ -187,7 +187,6 @@ test "@sizeOf(T) == 0 doesn't force resolving struct size" {
test "@TypeOf() has no runtime side effects" {
if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_c) return error.SkipZigTest;
const S = struct {
fn foo(comptime T: type, ptr: *T) T {
ptr.* += 1;
@ -203,7 +202,6 @@ test "@TypeOf() has no runtime side effects" {
test "branching logic inside @TypeOf" {
if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_c) return error.SkipZigTest;
const S = struct {
var data: i32 = 0;
fn foo() anyerror!i32 {