[PATCH] D45163: [Sema] -Wunused-value: diagnose unused std::move() call results.

[John McCall via Phabricator via cfe-commits]

rjmccall added a comment.

Trust me, I understand that this is an important function, but a lot of functions are important, and we're not going to hardcode knowledge about all of them in the compiler.

It seems reasonable to ask libc++ to use `__attribute__((warn_unused_result))` if `[[nodiscard]]` is unavailable.


Repository:
  rC Clang

https://reviews.llvm.org/D45163