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From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/107511] [13 Regression] gcc-13-20221030 failure to
 build on Cygwin due to lack of secure_getenv
Date: Fri, 04 Nov 2022 14:05:51 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D107511

--- Comment #3 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:f505f37a8e5a7646af4038b5c46f72d8a05dc7f0

commit r13-3684-gf505f37a8e5a7646af4038b5c46f72d8a05dc7f0
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Thu Nov 3 11:44:47 2022 +0000

    libstdc++: Define _GNU_SOURCE for secure_getenv on Cygwin [PR107511]

    As in r12-6867-ge20486d508afdf we need to define _GNU_SOURCE explicitly
    for Cygwin, because configure finds it in libc but it isn't declared
    unless we request it.

    libstdc++-v3/ChangeLog:

            PR libstdc++/107511
            * libsupc++/eh_alloc.cc (_GNU_SOURCE): Define.=