[Bug fortran/106692] [12/13/14 Regression] Cray pointer comparison wrongly optimized away

[cvs-commit at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106692

--- Comment #23 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-13 branch has been updated by Harald Anlauf
<anl...@gcc.gnu.org>:

https://gcc.gnu.org/g:91706178c3765cb27b05391c86f5c4f421ddd56d

commit r13-9307-g91706178c3765cb27b05391c86f5c4f421ddd56d
Author: Harald Anlauf <anl...@gmx.de>
Date:   Thu Jan 2 20:22:23 2025 +0100

    Fortran: Cray pointer comparison wrongly optimized away [PR106692]

            PR fortran/106692

    gcc/fortran/ChangeLog:

            * trans-expr.cc (gfc_conv_expr_op): Inhibit excessive optimization
            of Cray pointers by treating them as volatile in comparisons.

    gcc/testsuite/ChangeLog:

            * gfortran.dg/cray_pointers_13.f90: New test.

    (cherry picked from commit c7754a2fb2e60987524947fe189f3ffac035ea1d)