================
@@ -5910,6 +5910,51 @@ static void handleBuiltinAliasAttr(Sema &S, Decl *D,
D->addAttr(::new (S.Context) BuiltinAliasAttr(S.Context, AL, Ident));
}
+static void handlePreferredTypeAttr(Sema &S, Decl *D, const ParsedAttr &AL) {
+ if (!AL.hasParsedType()) {
+ S.Diag(AL.getLoc(), diag::err_attribute_wrong_number_arguments) << AL << 1;
+ return;
+ }
+
+ TypeSourceInfo *ParmTSI = nullptr;
+ QualType QT = S.GetTypeFromParser(AL.getTypeArg(), &ParmTSI);
+ QT->getAsTagDecl()->setCompleteDefinitionRequired();
----------------
Endilll wrote:
I've changed this so that `preferred_type` accepts only complete types. We can
lift this up later if it's too restrictive. I just don't want to deal with
consequences of incomplete types in this PR.
https://github.com/llvm/llvm-project/pull/69104
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