jfb added inline comments.
================
Comment at: lib/Sema/SemaChecking.cpp:3497
+ else if (Form == Copy || Form == Xchg) {
+ if (!IsC11 && !IsN)
+ // The value pointer is always dereferenced, a nullptr is
undefined.
----------------
rsmith wrote:
> arphaman wrote:
> > Nit: might make more sense to check if `ByValType` is a pointer here
> > instead of duplicating the `if` condition from above.
> I think the suggestion was to check `ByValType->isPointerType()` here. But...
> that doesn't work, because we could have a pointer value being passed by
> value (where a null is allowed), rather than a value being passed by address
> (where a null is disallowed). I think this comparison is actually less clear
> than the `!IsC11 && !IsN` check; factoring out a `bool IsPassedByAddress` or
> similar instead would aid readability here.
I went with the `bool` as you suggested.
Repository:
rC Clang
https://reviews.llvm.org/D47229
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