[Bug libstdc++/67791] [10 Regression] Crash using std::thread and iostream with dynamic loading of a shared library
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67791 --- Comment #17 from Jonathan Wakely --- GCC 9 hasn't changed, so it must be something in your Ubuntu environment or your code. I don't think the RTLD_xxx approach was ever robust, the libpthread.so library needs to be loaded before the first __gthread_active_p() check in the whole executable. That can be achieved by linking the executable to libpthread or preloading it. Or using a newer glibc where libpthread.so is empty and all the pthreads functions live in libc.so anyway.
[Bug libstdc++/67791] [10 Regression] Crash using std::thread and iostream with dynamic loading of a shared library
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67791 colin.davidson at codeplay dot com changed: What|Removed |Added CC||colin.davidson at codeplay dot com --- Comment #16 from colin.davidson at codeplay dot com --- I've started seeing this throw error in the last few days (both in dockers and locally on ubuntu 20.04). This was in previously working code which used dlopen on a library with pthreads. We used RTLD_LAZY | RTLD_GLOBAL to work around previous crashes but now we can't get the code to work unless we LD_PRELOAD the pthreads library first. I'm on libstdc++.so.6.0.28, gcc (Ubuntu 9.4.0-1ubuntu1~20.04.1) 9.4.0
[Bug libstdc++/67791] [10 Regression] Crash using std::thread and iostream with dynamic loading of a shared library
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67791 Jonathan Wakely changed: What|Removed |Added Status|NEW |RESOLVED Resolution|--- |FIXED --- Comment #15 from Jonathan Wakely --- Fixed for 10.5 and up.
[Bug libstdc++/67791] [10 Regression] Crash using std::thread and iostream with dynamic loading of a shared library
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67791 --- Comment #14 from CVS Commits --- The releases/gcc-10 branch has been updated by Jonathan Wakely : https://gcc.gnu.org/g:e2babb0540cfa66752214f3f111461e1da4b26ce commit r10-11325-ge2babb0540cfa66752214f3f111461e1da4b26ce Author: Jonathan Wakely Date: Tue Nov 24 12:48:31 2020 + libstdc++: Throw instead of segfaulting in std::thread constructor [PR 67791] This turns a mysterious segfault into an exception with a more useful message. If the exception isn't caught, the user sees this instead of just a segfault: terminate called after throwing an instance of 'std::system_error' what(): Enable multithreading to use std::thread: Operation not permitted Aborted (core dumped) libstdc++-v3/ChangeLog: PR libstdc++/67791 * src/c++11/thread.cc (thread::_M_start_thread(_State_ptr, void (*)())): Check that gthreads is available before calling __gthread_create. (cherry picked from commit 4bbd5d0c5fb2b7527938ad44a6d8a2f2ef8bbe12)
[Bug libstdc++/67791] [10 Regression] Crash using std::thread and iostream with dynamic loading of a shared library
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67791 Jakub Jelinek changed: What|Removed |Added Target Milestone|10.4|10.5 --- Comment #13 from Jakub Jelinek --- GCC 10.4 is being released, retargeting bugs to GCC 10.5.
[Bug libstdc++/67791] [10 Regression] Crash using std::thread and iostream with dynamic loading of a shared library
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67791 Richard Biener changed: What|Removed |Added Target Milestone|9.5 |10.4 --- Comment #12 from Richard Biener --- GCC 9 branch is being closed
