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Subject: [Bug c++/101030] [9/10/11 Regression] ICE with -Wconversion and a?:b
 extension in template argument
Date: Wed, 30 Mar 2022 14:27:46 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D101030

--- Comment #6 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-11 branch has been updated by Marek Polacek
<mpolacek@gcc.gnu.org>:

https://gcc.gnu.org/g:511e8b612287ad828c60f2f12c500ccfa26c275c

commit r11-9751-g511e8b612287ad828c60f2f12c500ccfa26c275c
Author: Marek Polacek <polacek@redhat.com>
Date:   Tue Mar 29 14:36:55 2022 -0400

    c-family: ICE with -Wconversion and A ?: B [PR101030]

    This patch fixes a crash in conversion_warning on a null expression.
    It is null because the testcase uses the GNU A ?: B extension.  We
    could also use op0 instead of op1 in this case, but it doesn't seem
    to be necessary.

            PR c++/101030

    gcc/c-family/ChangeLog:

            * c-warn.c (conversion_warning) <case COND_EXPR>: Don't call
            conversion_warning when OP1 is null.

    gcc/testsuite/ChangeLog:

            * g++.dg/ext/cond5.C: New test.

    (cherry picked from commit 5db9ce171019f8915885cebd5cc5f4101bb926e6)=