[Bug c++/124573] [15/16 Regression] internal compiler error in finish_enum_value_list with templated scoped enum redeclaration

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=124573

--- Comment #3 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Roger Sayle <sayle@gcc.gnu.org>:

https://gcc.gnu.org/g:e1844765af501eb044598e4dc6ad8e729948f7bc

commit r16-8465-ge1844765af501eb044598e4dc6ad8e729948f7bc
Author: Roger Sayle <roger@nextmovesoftware.com>
Date:   Sat Apr 4 13:57:55 2026 +0100

    PR c++/124573: ICE on invalid P4 regression

    This patch addresses PR c++/124573 by making finish_enum_value_list more
    robust to DECL_INITIAL being NULL, which I believe only occurs in the
    event of an error, and treating it as integer_zero_node for the purposes
    of error recovery.

    2026-04-04  Roger Sayle  <roger@nextmovesoftware.com>

    gcc/cp/ChangeLog
            PR c++/124573
            * decl.cc (finish_enum_value_list): Defend against a DECL_INITIAL
            being NULL during error recovery.

    gcc/testsuite/ChangeLog
            PR c++/124573
            * g++.dg/other/enum4.C: New test case.