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Subject: [Bug libstdc++/104602] std::source_location::current uses cast from
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Date: Thu, 07 Jul 2022 23:31:59 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D104602

--- Comment #10 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-11 branch has been updated by Jonathan Wakely
<redi@gcc.gnu.org>:

https://gcc.gnu.org/g:ed377f0fb3419fceed25ae378aca2efca1a6b79d

commit r11-10115-ged377f0fb3419fceed25ae378aca2efca1a6b79d
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Thu Feb 24 21:33:44 2022 +0000

    libstdc++: Fix cast in source_location::current() [PR104602]

    This fixes a problem for Clang, which is going to return a non-void
    pointer from __builtin_source_location(). The current definition of
    std::source_location::current() converts that to void* and then has to
    cast it back again in the body (which makes it invalid in a constant
    expression). By using the actual type of the returned pointer, we avoid
    the problematic cast for Clang.

    libstdc++-v3/ChangeLog:

            PR libstdc++/104602
            * include/std/source_location (source_location::current): Use
            deduced type of __builtin_source_location().

    (cherry picked from commit 41cbcf53dc60b7434b9ee059b3a734a47f5bf212)=