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4bbd5d0c5f
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:🧵 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.
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