https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109882
Bug ID: 109882
Summary: -fsanitize=thread #include <memory> transitively
includes sanitizer/common_interface_defs.h
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: ed at catmur dot uk
Target Milestone: ---
Since 12.3.0, when compiled under tsan (-fsanitize=thread), #include <memory>
transitively includes sanitizer/common_interface_defs.h:
#include <memory>
#if defined SANITIZER_COMMON_INTERFACE_DEFS_H
#error :(
#endif
This is problematic for us because sanitizer/common_interface_defs.h has
#define __has_feature(x) 0
https://github.com/gcc-mirror/gcc/blame/5d85b5d649fff675ff00adcc99371bccf4ef5944/libsanitizer/include/sanitizer/common_interface_defs.h#L20
which makes our sanitizer detector incorrectly believe that __has_feature is
available and that tsan is not in fact present since
__has_feature(thread_sanitizer) evaluates to 0.
We will fix the order of checks to put `#ifdef __SANITIZE_THREAD__` first but
thought we should probably report this to help other users.
