[Bug tree-optimization/123736] [13/14/15/16 Regression] ICE at -O1 with PGO on x86_64_linux-gnu: Segmentation fault

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123736

--- Comment #4 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jakub Jelinek <jakub@gcc.gnu.org>:

https://gcc.gnu.org/g:613fef9239aa723ea65b1118262bb63d023169c4

commit r16-6970-g613fef9239aa723ea65b1118262bb63d023169c4
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Thu Jan 22 10:11:34 2026 +0100

    unswitch: Fix up one unguarded fprintf (dump_file, ...) [PR123736]

    This dump message is not guarded on dump_file being non-NULL, so crashes
    inside of libc if dump_file is NULL.

    I think a message like that is usually guarded not just on dump_file
    being non-NULL, but also on TDF_DETAILS set in dump_flags.

    2026-01-22  Jakub Jelinek  <jakub@redhat.com>

            PR tree-optimization/123736
            * tree-ssa-loop-unswitch.cc (hoist_guard): Guard dump message
            on dump_file && (dump_flags & TDF_DETAILS) condition.