(Merge 3.4) Issue #23571: Fix reentrant call to Py_FatalError()
Flushing sys.stdout and sys.stderr in Py_FatalError() can call again Py_FatalError(). Add a reentrant flag to detect this case and just abort at the second call.
V
Victor Stinner committed
53345a40bcbf6d71705533b658b2940dad31a684