[libc-commits] [PATCH] D158033: [libc][NFC] Add new is_trivially_destructible check to libc's type_traits

[Mikhail Ramalho via Phabricator via libc-commits]

mikhail.ramalho created this revision.
mikhail.ramalho added a reviewer: michaelrj.
Herald added subscribers: libc-commits, asb.
Herald added projects: libc-project, All.
mikhail.ramalho requested review of this revision.

This patch adds new code to check if a given object is trivially
destructible. The ifdefs where necessary to implement it in gcc, as it
doesn't have the __is_trivially_destructible builtin like clang.

In gcc, it's not enough to only call __has_trivial_destructor, see:
https://stackoverflow.com/questions/20181702/which-type-traits-cannot-be-implemented-without-compiler-hooks

This patch only adds the new check, it will be used in D150211 <https://reviews.llvm.org/D150211>.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D158033

Files:
  libc/src/__support/CPP/type_traits.h

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