[Bug c++/120685] [12/13/14/15/16 Regression] GCC Crashes After C++23 auto(t) Warning Instead of Graceful Error

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120685

Marek Polacek <mpolacek at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|GCC Crashes After C++23     |[12/13/14/15/16 Regression]
                   |auto(t) Warning Instead of  |GCC Crashes After C++23
                   |Graceful Error              |auto(t) Warning Instead of
                   |                            |Graceful Error
           Priority|P3                          |P2
   Last reconfirmed|                            |2025-06-17
             Status|UNCONFIRMED                 |NEW
     Ever confirmed|0                           |1
                 CC|                            |mpolacek at gcc dot gnu.org
   Target Milestone|---                         |12.5
           Keywords|                            |ice-on-invalid-code

--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Started with r12-5386:

commit 93810fd673654db9ff16170624a6d36449eab241
Author: Marek Polacek <pola...@redhat.com>
Date:   Wed Nov 3 11:04:22 2021 -0400

    c++: Implement C++23 P0849R8 - auto(x) [PR103049]