CVS commit: src/external/gpl3/gcc/dist/libsanitizer/sanitizer_common

["Kamil Rytarowski" <kamil%netbsd.org@localhost>]

Module Name:    src
Committed By:   kamil
Date:           Fri Oct  2 14:36:54 UTC 2020

Modified Files:
        src/external/gpl3/gcc/dist/libsanitizer/sanitizer_common:
            sanitizer_linux_libcdep.cc

Log Message:
Do not assume that _lwp_getprivate() returns unbiased private pointer

Cherry-pick and adapt:

>From 2a9ce60de98e53198047daaeeec3cf09ece4e693 Mon Sep 17 00:00:00 2001
From: Kamil Rytarowski <n54%gmx.com@localhost>
Date: Fri, 2 Oct 2020 16:13:09 +0200
Subject: [PATCH] [compiler-rt] [netbsd] Improve the portability of
 ThreadSelfTlsTcb

Use __lwp_gettcb_fast() and __lwp_getprivate_fast(), as _lwp_getprivate()
can be a biased pointer and invalid for use in this function on all CPUs.


To generate a diff of this commit:
cvs rdiff -u -r1.16 -r1.17 \
    src/external/gpl3/gcc/dist/libsanitizer/sanitizer_common/sanitizer_linux_libcdep.cc

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.