rjmccall accepted this revision.
rjmccall added inline comments.
This revision is now accepted and ready to land.
================
Comment at: clang/lib/CodeGen/CGObjC.cpp:475-483
case ObjCMessageExpr::Class: {
ReceiverType = E->getClassReceiver();
const ObjCObjectType *ObjTy = ReceiverType->getAs<ObjCObjectType>();
assert(ObjTy && "Invalid Objective-C class message send");
OID = ObjTy->getInterface();
assert(OID && "Invalid Objective-C class message send");
Receiver = Runtime.GetClass(*this, OID);
----------------
erik.pilkington wrote:
> > Also, I think getInterface() can return null here, although it might need
> > to be contrived to fit the other requirements. Class<SomeProtocol>, where
> > that protocol declares +alloc? If there isn't a way to just emit the
> > receiver pointer of a normal message send from an ObjCMessageExpr, that's
> > really too bad.
>
> Are you sure? It looks like we unconditionally dereference getInterface()
> here, and we would take this path if not for the new check above.
It looks like `ObjCMessageExpr::Class` is only for messages to type names, and
Sema rejects types in that case that aren't just an ObjC class, so you're
right, I misunderstood.
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D57936/new/
https://reviews.llvm.org/D57936
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