[clang] [Clang] Support MSPropertyRefExpr as placement arg to new-expression (PR #75883)

[via cfe-commits]

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@@ -2286,6 +2286,9 @@ ExprResult Sema::BuildCXXNew(SourceRange Range, bool UseGlobal,
   bool PassAlignment = getLangOpts().AlignedAllocation &&
                        Alignment > NewAlignment;
 
+  if (CheckArgsForPlaceholders(PlacementArgs))
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Sirraide wrote:

tl;dr Overall, it seems like this pr also improves some error messages as well as support for MSVC’s `__noop` builtin. I’ll add some tests for the cases above (though again, for some of them, (e.g. the UnknownAny case), I’m not sure whether that’s necessary, so please let me know whether I should add some for those as well).

https://github.com/llvm/llvm-project/pull/75883