[3.13] gh-123321: Make Parser/myreadline.c locking safe in free-threaded build (GH-123690) #123798
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…ed build (pythonGH-123690) Use a `PyMutex` to avoid the race in mutex initialization. Use relaxed atomics to avoid the data race on reading `_PyOS_ReadlineTState` when checking for re-entrant calls. (cherry picked from commit 0c080d7) Co-authored-by: Sam Gross <colesbury@gmail.com>
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Use a
PyMutexto avoid the race in mutex initialization. Use relaxedatomics to avoid the data race on reading
_PyOS_ReadlineTStatewhenchecking for re-entrant calls.
(cherry picked from commit 0c080d7)
Co-authored-by: Sam Gross colesbury@gmail.com
PyOS_Readlinecrashes in a multi-threaded race #123321