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From: "redi at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/106820] [modules] internal compiler error: in
 function_and_variable_visibility [for std::shared_ptr<data>{b,??} use via
 <memory> header unit]: mishandling of "weak" usage generated via
 __gthrw(pthread_mutex_unlock) use
Date: Wed, 12 Oct 2022 09:34:51 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D106820

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |ice-on-valid-code

--- Comment #6 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to Mark Millard from comment #1)
> I've now tried this on fedora 36 with copies of the source code
> and got no failure in the fedora context.

That will be because we no longer use weak symbols for pthreads when linkin=
g to
glibc 2.34 or later (as found in recent Fedora releases).

I think I should be able to reproduce this on linux with an older glibc, or
with libstdc++ modified to use weak symbols again. Trying that now ...=