[PATCH] D157334: [clang] Define _MSC_EXTENSIONS on -gnu if -fms-extensions is set

Thu Aug 10 10:49:24 PDT 2023

aaron.ballman added a comment.

In D157334#4574197 <https://reviews.llvm.org/D157334#4574197>, @aidengrossman wrote:

> It's interesting that GCC doesn't set the `_MSC_EXTENSIONS` macro with `-fms-extensions`. It should if it wants to match the behavior of MSVC.

FWIW, I filed https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110977 to see what the GCC devs think and hopefully we can proactively avoid diverging for too long here.

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  https://reviews.llvm.org/D157334/new/

https://reviews.llvm.org/D157334