[Bug build/7065] Support building glibc with -fstack-protector or -fstack-protector-all

["cvs-commit at gcc dot gnu.org" <sourceware-bugzilla at sourceware dot org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=7065

--- Comment #35 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
This is an automated email from the git hooks/post-receive script. It was
generated because a ref change was pushed to the repository containing
the project "GNU C Library master sources".

The branch, master has been updated
       via  2b4fca86d786b4a5ed4f88c571eeec7d9ff5e684 (commit)
      from  82e06600505cc26810d263a964d9eca6f3cdfe91 (commit)

Those revisions listed above that are new to this repository have
not appeared on any other notification email; so we list those
revisions in full, below.

- Log -----------------------------------------------------------------
https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=2b4fca86d786b4a5ed4f88c571eeec7d9ff5e684

commit 2b4fca86d786b4a5ed4f88c571eeec7d9ff5e684
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Wed Jul 19 08:21:27 2017 -0700

    Don't add stack_chk_fail_local.o to libc.a [BZ #21740]

    commit 524a8ef2ad76af8ac049293d993a1856b0d888fb
    Author: Nick Alcock <nick.alcock@oracle.com>
    Date:   Mon Dec 26 10:08:57 2016 +0100

        PLT avoidance for __stack_chk_fail [BZ #7065]

        Add a hidden __stack_chk_fail_local alias to libc.so,
        and make sure that on targets which use __stack_chk_fail,
        this does not introduce a local PLT reference into libc.so.

    which unconditionally added

    strong_alias (__stack_chk_fail, __stack_chk_fail_local)

    defines __stack_chk_fail_local as an alias of __stack_chk_fail in libc.a.
    There is no need to add stack_chk_fail_local.o to libc.a.  We only need
    to add stack_chk_fail_local.oS to libc_nonshared.a.

    Tested on x86-64:

    [hjl@gnu-skl-1 build-x86_64-linux]$ nm libc.a | grep __stack_chk_fail
    0000000000000000 T __stack_chk_fail
    0000000000000000 T __stack_chk_fail_local
    [hjl@gnu-skl-1 build-x86_64-linux]$ nm libc_nonshared.a | grep
__stack_chk_fail_local
    0000000000000000 T __stack_chk_fail_local
    [hjl@gnu-skl-1 build-x86_64-linux]$

        [BZ #21740]
        * debug/Makefile (elide-routines.o): New.

-----------------------------------------------------------------------

Summary of changes:
 ChangeLog      |    5 +++++
 debug/Makefile |    4 ++++
 2 files changed, 9 insertions(+), 0 deletions(-)

-- 
You are receiving this mail because:
You are on the CC list for the bug.