New submission from Karthk Rajagopalan: Please download subprocess.zip and extract the archive. Run -
perl test.pl you will notice 'invalid handle' error on duplicating STD_INPUT_HANDLE in python. This is observed in Windows XP SP3. Vista SP2 and higher platforms doesn't show this failure when I checked. "test.pl" spawn a python process "test.py" using CREATE_NEW_PROCESS_GROUP flag. Before it does, it close STDIN and create a listening socket. Perl under the hood, convert the socket handle to file descriptor using open_osfhandle(..) call. When it does this, the C runtime set the standard input handle to this descriptor for console app. [ See msvcr* osfinfo.c code - SetStdHandle( STD_INPUT_HANDLE, (HANDLE)value ) ]. As a result, when you get the STD_INPUT_HANDLE, you will get the new one. Duplicating this handle, hence throw the invalid handle error in Windows XP SP3. When I looked at MSDN for DuplicateHandle(..), it is mentioned not to duplicate socket handle using this call. So I suspect something going wrong in XP platform. To fix this issue, I have come up with a patch - python-2143_patch. Please take a look and let me know your comments. -Karthik ---------- components: Windows files: subprocess.zip messages: 175416 nosy: kartlee05 priority: normal severity: normal status: open title: subprocess.py throw "The handle is invalid" error on duplicating the STD_INPUT_HANDLE type: behavior versions: Python 2.7 Added file: http://bugs.python.org/file27966/subprocess.zip _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue16458> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
