tahonermann added inline comments.

================
Comment at: clang/lib/CodeGen/CGObjC.cpp:222-223
   Selector Sel = MethodWithObjects->getSelector();
-  QualType ResultType = E->getType();
-  const ObjCObjectPointerType *InterfacePointerType
-    = ResultType->getAsObjCInterfacePointerType();
+  const ObjCObjectPointerType *InterfacePointerType =
+      cast<ObjCObjectPointerType>(E->getType());
   ObjCInterfaceDecl *Class
----------------
eandrews wrote:
> tahonermann wrote:
> > The previous code included a guarantee that 
> > `InterfacePointerType->getInterfaceType()` is non-null and this change 
> > loses that assurance. Presumably, we never ran into a violation of that 
> > guarantee in the past (since a SIGSEGV would likely have occurred below 
> > otherwise), but perhaps we should consider an assertion to ensure that 
> > guarantee is still met.
> Hmmm... I guess in that case it was just make more sense to keep the old code 
> and add an assert for InterfacePointerType?
Ah, yes, I think that is a better approach!


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D157454/new/

https://reviews.llvm.org/D157454

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