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fix tagged union with all void payloads but meaningful tag

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closes #1322
This commit is contained in:
Andrew Kelley
2018-09-14 00:37:54 -04:00
parent 1e03cf1739
commit 3d38feded9
3 changed files with 21 additions and 1 deletions
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2
src/codegen.cpp
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@@ -4715,7 +4715,6 @@ static LLVMValueRef ir_render_err_wrap_payload(CodeGen *g, IrExecutable *executa
static LLVMValueRef ir_render_union_tag(CodeGen *g, IrExecutable *executable, IrInstructionUnionTag *instruction) {
ZigType *union_type = instruction->value->value.type;
assert(union_type->data.unionation.gen_tag_index != SIZE_MAX);
ZigType *tag_type = union_type->data.unionation.tag_type;
if (!type_has_bits(tag_type))
@@ -4725,6 +4724,7 @@ static LLVMValueRef ir_render_union_tag(CodeGen *g, IrExecutable *executable, Ir
if (union_type->data.unionation.gen_field_count == 0)
return union_val;
assert(union_type->data.unionation.gen_tag_index != SIZE_MAX);
LLVMValueRef tag_field_ptr = LLVMBuildStructGEP(g->builder, union_val,
union_type->data.unionation.gen_tag_index, "");
ZigType *ptr_type = get_pointer_to_type(g, tag_type, false);