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Tests for zero-bit field compiler error

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This commit is contained in:
Andrea Orru 2018-03-13 22:07:40 -07:00
parent 7ac44037db
commit c828c23f71
2 changed files with 14 additions and 4 deletions
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8
src/ir.cpp
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@ -15223,10 +15223,10 @@ static TypeTableEntry *ir_analyze_instruction_offset_of(IrAnalyze *ira,
}
if (field->type_entry->zero_bits) {
ir_add_error(ira, field_name_value,
buf_sprintf("zero-bit field '%s' in struct '%s' has no offset",
buf_ptr(field_name), buf_ptr(&container_type->name)));
return ira->codegen->builtin_types.entry_invalid;
ir_add_error(ira, field_name_value,
buf_sprintf("zero-bit field '%s' in struct '%s' has no offset",
buf_ptr(field_name), buf_ptr(&container_type->name)));
return ira->codegen->builtin_types.entry_invalid;
}
size_t byte_offset = LLVMOffsetOfElement(ira->codegen->target_data_ref, container_type->type_ref, field->gen_index);
ConstExprValue *out_val = ir_build_const_from(ira, &instruction->base);

10
test/compile_errors.zig
View File

@ -3141,4 +3141,14 @@ pub fn addCases(cases: &tests.CompileErrorContext) void {
\\}
,
".tmp_source.zig:4:9: error: type 'S' is not copyable; cannot pass by value");
cases.add("taking offset of void field in struct",
\\const Empty = struct {
\\ val: void,
\\};
\\export fn foo() void {
\\ const fieldOffset = @offsetOf(Empty, "val");
\\}
,
".tmp_source.zig:5:42: error: zero-bit field 'val' has no offset in struct 'Empty'");
}