[Bug target/121911] x86-64: -mstack-protector-guard=global should respect symbol visibility

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121911

--- Comment #9 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by H.J. Lu <hjl@gcc.gnu.org>:

https://gcc.gnu.org/g:d54aaab350d4224c458b50af473b5ea6bb9e14a4

commit r17-342-gd54aaab350d4224c458b50af473b5ea6bb9e14a4
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Wed May 6 04:56:32 2026 +0800

    libssp: Change __stack_chk_guard to uintptr_t

    Since the only test of __stack_chk_guard in GCC is declared as an integer:

     #ifdef __LP64__
     const unsigned long int __stack_chk_guard = 0x2d853605a4d9a09cUL;
     #else
     const unsigned long int __stack_chk_guard = 0xdd2cc927UL;
     #endif

    and it is natural to assign an integer to __stack_chk_guard,

    commit c05b5e5d8cb660ed43159d66fd669c20746d6bea
    Author: H.J. Lu <hjl.tools@gmail.com>
    Date:   Fri Sep 12 18:52:39 2025 -0700

        c/c++: Declare stack protection guard as a global symbol

    declared __stack_chk_guard as uintptr_t if it is an internal global
    symbol.  Change __stack_chk_guard in libssp to match the internal
    symbol type.

            PR c/121911
            * ssp.c: Include <stdint.h>.  Change __stack_chk_guard to
            uintptr_t.

    Signed-off-by: H.J. Lu <hjl.tools@gmail.com>