[Bug libc/24202] m68k setjmp() saves incorrect 'a5' register in --enable-stack-protector=all

[siddhesh at sourceware dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=24202

Siddhesh Poyarekar <siddhesh at sourceware dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |2.33
         Resolution|---                         |FIXED
                 CC|                            |siddhesh at sourceware dot org
             Status|UNCONFIRMED                 |RESOLVED

--- Comment #2 from Siddhesh Poyarekar <siddhesh at sourceware dot org> ---
Fixed in master:

commit 6eb7e1da0e805e2893a0b70a5813641529d8c7e2 (HEAD -> master)
Author: Sergei Trofimovich <slyfox@gentoo.org>
Date:   Mon Dec 21 10:24:34 2020 +0530

    m68k: fix clobbering a5 in setjmp() [BZ #24202]

    setjmp() uses C code to store current registers into jmp_buf
    environment. -fstack-protector-all places canary into setjmp()
    prologue and clobbers 'a5' before it gets saved.

    The change inhibits stack canary injection to avoid clobber.

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