[Bug c++/108438] [11/12/13/14/15 Regression] ICE in cxx_eval_constant_expression, at cp/constexpr.cc:7611

["cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108438

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

https://gcc.gnu.org/g:2c9643c27ecddb7f597d34009d89e932b4aca58e

commit r15-1114-g2c9643c27ecddb7f597d34009d89e932b4aca58e
Author: Simon Martin <simon@nasilyan.com>
Date:   Fri Jun 7 11:21:07 2024 +0200

    c++: Make *_cast<*> parsing more robust to errors [PR108438]

    We ICE upon the following when trying to emit a -Wlogical-not-parentheses
    warning:

    === cut here ===
    template <typename T> T foo (T arg, T& ref, T* ptr) {
      int a = 1;
      return static_cast<T!>(a);
    }
    === cut here ===

    This patch makes *_cast<*> parsing more robust by skipping to the closing
'>'
    upon error in the target type.

    Successfully tested on x86_64-pc-linux-gnu.

            PR c++/108438

    gcc/cp/ChangeLog:

            * parser.cc (cp_parser_postfix_expression): Use
            cp_parser_require_end_of_template_parameter_list to skip to the
closing
            '>' upon error parsing the target type of *_cast<*> expressions.

    gcc/testsuite/ChangeLog:

            * g++.dg/parse/crash75.C: New test.