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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug d/103944] [12 Regression] Testsuite hang due to
 libphobos/testsuite/libphobos.gc/forkgc2.d
Date: Mon, 10 Jan 2022 14:30:27 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D103944

--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The process when it hangs is stuck on pthread_mutex_lock called from
_D4core4sync5mutex5Mutex__T12lock_nothrowTCQBpQBnQBlQBiZQBdMFNbNiNeZv
in libgphobos.so.3.
#0  0xf7ee6579 in __kernel_vsyscall ()
#1  0xf73af173 in __lll_lock_wait () from
/var/lib/mock/fedora-rawhide-i686/root/lib/libc.so.6
#2  0xf73b5f41 in pthread_mutex_lock@@GLIBC_2.0 () from
/var/lib/mock/fedora-rawhide-i686/root/lib/libc.so.6
#3  0xf77b41d0 in ?? ()
#4  0xf7e0cff4 in ?? ()
where 0xf77b41d0 is inside of
_D4core4sync5mutex5Mutex__T12lock_nothrowTCQBpQBnQBlQBiZQBdMFNbNiNeZv=