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Subject: [Bug tree-optimization/106189] [10/11/12 Regression] ICE: Floating
 point exception since r9-1948-gd893b683f40884cd
Date: Wed, 27 Jul 2022 09:24:36 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D106189

--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-12 branch has been updated by Richard Biener
<rguenth@gcc.gnu.org>:

https://gcc.gnu.org/g:5b8458bc35b5df34c1b4b8735975f2686444f6c8

commit r12-8629-g5b8458bc35b5df34c1b4b8735975f2686444f6c8
Author: Richard Biener <rguenther@suse.de>
Date:   Mon Jul 25 17:24:57 2022 +0200

    tree-optimization/106189 - avoid division by zero exception

    The diagnostic code can end up with zero sized array elements
    with T[][0] and the wide-int code nicely avoids exceptions when
    dividing by zero in one codepath but not in another.  The following
    fixes the exception by using wide-int in both paths.

            PR tree-optimization/106189
            * gimple-array-bounds.cc (array_bounds_checker::check_mem_ref):
            Divide using offset_ints.

            * gcc.dg/pr106189.c: New testcase.

    (cherry picked from commit bb04f9f23ac0dee2c003118c85372ece50a52220)=