RKSimon added inline comments.

================
Comment at: clang/lib/Sema/SemaOverload.cpp:9528
     QualType T2 = NextParam(F2, I2, I == 0);
-    if (!T1.isNull() && !T1.isNull() && !Context.hasSameUnqualifiedType(T1, 
T2))
+    if (!T1.isNull() && !T2.isNull() && !Context.hasSameUnqualifiedType(T1, 
T2))
       return false;
----------------
urnathan wrote:
> RKSimon wrote:
> > @rsmith Can these isNull checks ever fail? Or would we be better off 
> > changing them into an assert?
> > ```
> > QualType T1 = NextParam(F1, I1, I == 0);
> > QualType T2 = NextParam(F2, I2, I == 0);
> > assert(!T1.isNull() && !T2.isNull() && "Unknown types");
> > if (!Context.hasSameUnqualifiedType(T1, T2))
> > ```
> that it's never ICED without checking T2's nullness suggests to me that 
> they're never null.  A null type here would seem to be from bad parsing, in 
> which case why are we even checking further?  IMHO assert now, there's plenty 
> of time before C14 to revert that.
OK - I'll change this to an assertion


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D107347/new/

https://reviews.llvm.org/D107347

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