[PATCH] D28716: [libc++] Diagnose null inputs in std::string using _LIBCPP_DIAGNOSE_WARNING

[Eric Fiselier via Phabricator via cfe-commits]

EricWF created this revision.
EricWF added a reviewer: mclow.lists.
EricWF added a subscriber: cfe-commits.

This patch uses `diagnose_if` to attempt to catch null inputs in `std::string`. Note that unlike `__attribute__((non_null))` `diagnose_if` does not affect codegen.


https://reviews.llvm.org/D28716

Files:
  include/string
  test/libcxx/strings/diagnose_null_pointer.fail.cpp

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