[Bug c++/111919] [14 Regression] ICE: tree check: did not expect class 'type', have 'type' (integer_type) in contains_placeholder_p, at tree.cc:4144 on valid code

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111919

--- Comment #3 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Patrick Palka <ppa...@gcc.gnu.org>:

https://gcc.gnu.org/g:51f164f76212feaf896d65616f60877d3217b701

commit r14-4898-g51f164f76212feaf896d65616f60877d3217b701
Author: Patrick Palka <ppa...@redhat.com>
Date:   Tue Oct 24 17:48:00 2023 -0400

    c++: cp_stabilize_reference and non-dep exprs [PR111919]

    After the removal of NON_DEPENDENT_EXPR, cp_stabilize_reference (which
    used to just exit early for NON_DEPENDENT_EXPR) is now more prone to
    passing a weird templated tree to middle-end routines, which for the
    testcase below leads to a crash from contains_placeholder_p.  It seems
    the best fix is to just exit early when in a template context, like we
    do in the closely related function cp_save_expr.

            PR c++/111919

    gcc/cp/ChangeLog:

            * tree.cc (cp_stabilize_reference): Do nothing when
            processing_template_decl.

    gcc/testsuite/ChangeLog:

            * g++.dg/template/non-dependent27.C: New test.