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translate-c: better detection of pointer to struct demoted to opaque

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This commit is contained in:
Andrew Kelley 2019-07-12 12:11:26 -04:00
parent 52f0300505
commit 4e58855a4a
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GPG Key ID: 7C5F548F728501A9
2 changed files with 30 additions and 2 deletions
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19
src/translate_c.cpp
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@ -840,8 +840,23 @@ static bool type_is_opaque(Context *c, const ZigClangType *ty, ZigClangSourceLoc
return ZigClangBuiltinType_getKind(builtin_ty) == ZigClangBuiltinTypeVoid;
}
case ZigClangType_Record: {
const clang::RecordType *record_ty = reinterpret_cast<const clang::RecordType*>(ty);
return record_ty->getDecl()->getDefinition() == nullptr;
const ZigClangRecordType *record_ty = reinterpret_cast<const ZigClangRecordType*>(ty);
const ZigClangRecordDecl *record_decl = ZigClangRecordType_getDecl(record_ty);
const ZigClangRecordDecl *record_def = ZigClangRecordDecl_getDefinition(record_decl);
if (record_def == nullptr) {
return true;
}
for (auto it = reinterpret_cast<const clang::RecordDecl *>(record_def)->field_begin(),
it_end = reinterpret_cast<const clang::RecordDecl *>(record_def)->field_end();
it != it_end; ++it)
{
const clang::FieldDecl *field_decl = *it;
if (field_decl->isBitField()) {
return true;
}
}
return false;
}
case ZigClangType_Elaborated: {
const clang::ElaboratedType *elaborated_ty = reinterpret_cast<const clang::ElaboratedType*>(ty);

13
test/translate_c.zig
View File

@ -40,6 +40,19 @@ pub fn addCases(cases: *tests.TranslateCContext) void {
);
/////////////// Cases for only stage1 which are TODO items for stage2 ////////////////
cases.add("pointer to struct demoted to opaque due to bit fields",
\\struct Foo {
\\ unsigned int: 1;
\\};
\\struct Bar {
\\ struct Foo *foo;
\\};
,
\\pub const struct_Foo = @OpaqueType();
\\pub const struct_Bar = extern struct {
\\ foo: ?*struct_Foo,
\\};
);
cases.add("macro with left shift",
\\#define REDISMODULE_READ (1<<0)