en Copyright 2015 Java http://172.16.0.5:8080/history/freebsd-13.1/lib/libc/stdlib/cxa_thread_atexit_impl.c#b7c7684a Export __cxa_thread_atexit_impl as an alias for __cxa_thread_atexit.libstdc++ before gcc r244057 expected that libc provided__cxa_thread_atexit_impl, and libstdc++ implemented__cxa_thread_atexit, by forwarding the calls to _impl. Mentioned gccrevision checks for __cxa_thread_atexit in libc and does not providethe symbol from libstdc++ if found.This change helps older gcc, in particular, all released versionswhich implement thread_local, by consolidating the implementation intolibc. For that versions, if configured with the current libc, the__cxa_thread_atexit is exported from libstdc++ as a trivial wrapperaround libc::__cxa_thread_atexit_impl.The __cxa_thread_atexit implementation is put into separate sourcefile to allow for static linking with older libstdc++.a.gcc bugzilla: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78968Reported by: Hannes Hauswedell <h2+fbsdports@fsfe.org>PR: 215709Sponsored by: The FreeBSD FoundationMFC after: 2 weeks List of files: /freebsd-13.1/lib/libc/stdlib/cxa_thread_atexit_impl.c Sat, 07 Jan 2017 16:05:19 +0000 Konstantin Belousov <kib@FreeBSD.org>