================
@@ -1547,6 +1547,58 @@ ExprResult Sema::ActOnTypeTrait(TypeTrait Kind,
SourceLocation KWLoc,
return BuildTypeTrait(Kind, KWLoc, ConvertedArgs, RParenLoc);
}
+bool Sema::BuiltinIsBaseOf(SourceLocation RhsTLoc, QualType LhsT,
+ QualType RhsT) {
+ // C++0x [meta.rel]p2
+ // Base is a base class of Derived without regard to cv-qualifiers or
+ // Base and Derived are not unions and name the same class type without
+ // regard to cv-qualifiers.
+
+ const RecordType *lhsRecord = LhsT->getAs<RecordType>();
+ const RecordType *rhsRecord = RhsT->getAs<RecordType>();
+ if (!rhsRecord || !lhsRecord) {
+ const ObjCObjectType *LHSObjTy = LhsT->getAs<ObjCObjectType>();
+ const ObjCObjectType *RHSObjTy = RhsT->getAs<ObjCObjectType>();
+ if (!LHSObjTy || !RHSObjTy)
+ return false;
+
+ ObjCInterfaceDecl *BaseInterface = LHSObjTy->getInterface();
+ ObjCInterfaceDecl *DerivedInterface = RHSObjTy->getInterface();
+ if (!BaseInterface || !DerivedInterface)
+ return false;
+
+ if (RequireCompleteType(RhsTLoc, RhsT,
----------------
shafik wrote:
I don't think this diagnostic is tested.
https://github.com/llvm/llvm-project/pull/116709
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