STINNER Victor added the comment:
> With all faulthandler references removed from regrtest.py no
> bus errors happen, but most tests fail anyway. As I said, I'm
> NOT blaming faulthandler, but suspect some strange platform
> bug that perhaps involves linuxthreads.
Threads + signal is a very complex problem. It is not solved yet in OpenBSD for
example. There were a lot of such issues on old versions of FreeBSD. Extract of
the Wikipedia article of LinuxThreads:
"LinuxThreads had a number of problems, mainly owing to the implementation,
which used the clone system call to create a new process sharing the parent's
address space. For example, threads had distinct process identifiers, causing
problems for signal handling; (...)"
If disabling faulthandler avoids new issues, you can add 'if
sys.thread_info.version.startswith("linuxthreads"):" on the line:
faulthandler.enable(all_threads=True)
in regrtest.py.
I added sys.thread_info to be able to skip some tests only failing on
LinuxThreads...
--
> but most tests fail anyway
Ah? With which message? Can you get more information in gdb?
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