[libcxx-commits] [PATCH] D141326: [libc++] Introduce a compile-time mechanism to override __libcpp_verbose_abort

[Louis Dionne via Phabricator via libcxx-commits]

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This changes the mechanism for verbose termination (again!) to make it
support compile-time customization in addition to link-time customization,
which is important for users who need fine-grained control over what code
gets generated around sites that call the verbose termination handler.

This concern had been raised to me both privately by prospecting users
and in https://llvm.org/D140944, so I think it is clearly worth fixing.

We still support _LIBCPP_AVAILABILITY_CUSTOM_VERBOSE_ABORT_PROVIDED for
a limited time since the same functionality can be achieved by overriding
the _LIBCPP_VERBOSE_ABORT macro.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D141326

Files:
  libcxx/docs/ReleaseNotes.rst
  libcxx/docs/UsingLibcxx.rst
  libcxx/include/__assert
  libcxx/include/__availability
  libcxx/include/__verbose_abort
  libcxx/test/libcxx/assertions/customize_verbose_abort.backdeployment.pass.cpp
  libcxx/test/libcxx/assertions/customize_verbose_abort.compile-time.pass.cpp
  libcxx/test/libcxx/assertions/customize_verbose_abort.link-time.pass.cpp
  libcxx/test/libcxx/assertions/customize_verbose_abort.pass.cpp
  libcxx/test/libcxx/assertions/deprecated-link-time-custom-handler.pass.cpp
  libcxx/test/libcxx/assertions/headers_declare_verbose_abort.sh.cpp

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