[libcxx-commits] [libcxx] [libc++] Fix missing 'get_new_handler()' for Windows builds (PR #150182)

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siradam7th wrote:

> > @frederick-vs-ja @petrhosek ping for review, this is a short one.
> 
> @siradam7th You need the ugly `[[__nodiscard__]]` for pre-C++17 cases + a test in here libcxx/test/libcxx/language.support/nodiscard.verify.cpp. Sorry about that.

Yeah, I figured, I thought there is a macro, I guess not.

https://github.com/llvm/llvm-project/pull/150182