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python 3.12: os.fstat() raises WinError 87 #19
Description
Here is an example reproducer:
>>> import os
>>> os.stat('c:\\windows\\notepad.exe')
os.stat_result(st_mode=33279, st_ino=281474976770376, st_dev=3158229071, st_nlink=2, st_uid=0, st_gid=0, st_size=193024, st_atime=1464830981, st_mtime=1464830981, st_ctime=1464830981)
>>> f = open('c:\\windows\\notepad.exe', 'rb')
>>> f.fileno()
3
>>> os.fstat(f.fileno())
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
OSError: [WinError 87] The parameter is incorrect
I did not observe this issue with python 3.11.
Activity
adang1345 commentedon Oct 30, 2023
I suspect that python/cpython#102149 may have introduced an incompatibility with Windows 7. I'll see if I can add a patch that fixes this.
adang1345 commentedon Nov 8, 2023
It turns out that this bug is not isolated to Windows 7. Any file system or OS that does not support the FileIdInfo argument to GetFileInformationByHandleEx() will trigger this error. The error happens on Windows 7 because the OS does not support
FileIdInfo. The error also happens on recent versions of Windows with the official Python 3.12.0 release if the file is on a FAT32 or exFAT file system.I reported the bug at python/cpython#111856. In the meantime I will rebuild Python 3.12.0 with a fix.
adang1345 commentedon Nov 8, 2023
I have uploaded a fixed version of Python 3.12.0.