Update of /cvsroot/python/python/dist/src/Objects
In directory usw-pr-cvs1:/tmp/cvs-serv15221/221/Objects
Modified Files:
Tag: release22-maint
fileobject.c
Log Message:
SF bug 538827: Python open w/ MSVC6: bad error msgs.
open_the_file: Some (not all) flavors of Windows set errno to EINVAL
when passed a syntactically invalid filename. Python turned that into an
incomprehensible complaint about the mode string. Fixed by special-casing
MSVC.
Index: fileobject.c
===================================================================
RCS file: /cvsroot/python/python/dist/src/Objects/fileobject.c,v
retrieving revision 2.141.6.3
retrieving revision 2.141.6.4
diff -C2 -d -r2.141.6.3 -r2.141.6.4
*** fileobject.c 17 Mar 2002 15:55:50 -0000 2.141.6.3
--- fileobject.c 8 Apr 2002 04:19:50 -0000 2.141.6.4
***************
*** 129,134 ****
}
#endif
if (errno == EINVAL)
! PyErr_Format(PyExc_IOError, "invalid argument: %s",
mode);
else
--- 129,147 ----
}
#endif
+ #ifdef _MSC_VER
+ /* MSVC 6 (Microsoft) leaves errno at 0 for bad mode strings,
+ * across all Windows flavors. When it sets EINVAL varies
+ * across Windows flavors, the exact conditions aren't
+ * documented, and the answer lies in the OS's implementation
+ * of Win32's CreateFile function (whose source is secret).
+ * Seems the best we can do is map EINVAL to ENOENT.
+ */
+ if (errno == 0) /* bad mode string */
+ errno = EINVAL;
+ else if (errno == EINVAL) /* unknown, but not a mode string */
+ errno = ENOENT;
+ #endif
if (errno == EINVAL)
! PyErr_Format(PyExc_IOError, "invalid mode: %s",
mode);
else
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