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Subject: [Bug libstdc++/59675] -D_GLIBCXX_DEBUG asserts to stdout (it should
 stderr)
Date: Fri, 12 Nov 2021 12:25:28 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D59675

--- Comment #10 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jonathan Wakely <redi@gcc.gnu.org>:

https://gcc.gnu.org/g:a54ce8865a885bca5ab9c4aa6ec725cd13c09901

commit r12-5193-ga54ce8865a885bca5ab9c4aa6ec725cd13c09901
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Wed Nov 3 16:06:29 2021 +0000

    libstdc++: Print assertion messages to stderr [PR59675]

    This replaces the printf used by failed debug assertions with fprintf,
    so we can write to stderr.

    To avoid including <stdio.h> the assert function is moved into the
    library. To avoid programs using a vague linkage definition of the old
    inline function, the function is renamed. Code compiled with old
    versions of GCC might still call the old function, but code compiled
    with the newer GCC will call the new function and write to stderr.

    libstdc++-v3/ChangeLog:

            PR libstdc++/59675
            * acinclude.m4 (libtool_VERSION): Bump version.
            * config/abi/pre/gnu.ver (GLIBCXX_3.4.30): Add version and
            export new symbol.
            * configure: Regenerate.
            * include/bits/c++config (__replacement_assert): Remove, declare
            __glibcxx_assert_fail instead.
            * src/c++11/debug.cc (__glibcxx_assert_fail): New function to
            replace __replacement_assert, writing to stderr instead of
            stdout.
            * testsuite/util/testsuite_abi.cc: Update latest version.=