New submission from Frazer McLean: On 3.5.2 and 3.5.3, but not 3.4.3 or 2.7.10 (Windows 64-bit), the third line causes Python to crash with exit code 0xC0000417.
import msvcrt fp = open('file.txt', 'w') msvcrt.locking(fp.fileno(), msvcrt.LK_NBLCK, -1) print('End') I came across this in the portalocker module. I don't think -1 is a valid third argument, but it doesn't raise an exception on Python 3.4 or 2.7. ---------- components: Windows messages: 286495 nosy: RazerM, paul.moore, steve.dower, tim.golden, zach.ware priority: normal severity: normal status: open title: msvcrt.locking crashes python type: crash versions: Python 3.5 _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue29392> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com