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From: "fw at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug libstdc++/95989] Segmentation fault compiling with static
 libraries and using jthread::request_stop
Date: Mon, 06 Jul 2020 12:38:25 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D95989

--- Comment #11 from Florian Weimer <fw at gcc dot gnu.org> ---
It turns out that libc.a did not contain pthread_self until glibc 2.27.  The
symbol was only present in libc.so.6 (as a weird forwarder, for compatibili=
ty
with long-defunct LinuxThreads).

This means there could be some fallout from requiring a definition of
pthread_self in the statically linked case, in the form of linking failures
without -lpthread on older glibc (such 2.17, as including in Red Hat Enterp=
rise
Linux 7).=