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Subject: [Bug libstdc++/99876] std::filesystem::absolute is inefficient
Date: Sat, 28 Aug 2021 12:07:12 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D99876

--- 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:07b990ee23e0c7a92d362dbb25fd5d57d95eb8be

commit r12-3198-g07b990ee23e0c7a92d362dbb25fd5d57d95eb8be
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Fri Aug 27 10:59:54 2021 +0100

    libstdc++: Fix inefficiency in filesystem::absolute [PR99876]

    When the path is already absolute, the call to current_path() is
    wasteful, because operator/ will ignore the left operand anyway.

    Signed-off-by: Jonathan Wakely <jwakely@redhat.com>

    libstdc++-v3/ChangeLog:

            PR libstdc++/99876
            * src/c++17/fs_ops.cc (fs::absolute): Call non-throwing form,
            to avoid unnecessary current_path() call.=