Eryk Sun <eryk...@gmail.com> added the comment:
It's still the case in 3.10 that unsigned status codes are limited to
0x7FFF_FFFF, and any larger value gets mapped to -1 (0xFFFF_FFFF). For example:
>>> rc = subprocess.call([sys.executable, '-c', 'raise
SystemExit(0x7FFF_FFFF)'])
>>> hex(rc)
'0x7fffffff'
>>> rc = subprocess.call([sys.executable, '-c', 'raise
SystemExit(0x8000_0000)'])
>>> hex(rc)
'0xffffffff'
>>> rc = subprocess.call([sys.executable, '-c', 'raise
SystemExit(0xC000_0005)'])
>>> hex(rc)
'0xffffffff'
WinAPI ExitProcess() and GetExitCodeProcess() use unsigned values. The latter
is called by subprocess.Popen.wait(). In practice, this return code, which may
be larger than 0x7FFF_FFFF, might get passed to SystemExit() or os._exit().
----------
type: -> behavior
versions: +Python 3.10, Python 3.8, Python 3.9 -Python 2.7, Python 3.5
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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue24045>
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