fanbo-meng added inline comments.

================
Comment at: clang/lib/Sema/SemaExprCXX.cpp:1841
-        << IsDelete << FD.getType().getAsString() << OSName
-        << alignedAllocMinVersion(T.getOS()).getAsString();
     Diag(Loc, diag::note_silence_aligned_allocation_unavailable);
----------------
hubert.reinterpretcast wrote:
> Just to ensure we are on the same page:
> Passing `-Xclang -faligned-alloc-unavailable` on the non-Apple platforms does 
> very bad things (hits "unreachable" and otherwise falls off the end of a 
> function without initializing a return value). Part of this patch makes 
> passing `-Xclang -faligned-alloc-unavailable` okay on z/OS.
Yes, as we are trying to solve the same problem like Darwin (lack of support in 
system libraries), we use the same mechanism that are introduced for that.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D87611/new/

https://reviews.llvm.org/D87611

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