bpo-46775: OSError should call winerror_to_errno unconditionally on Windows (GH-32179)

corona10 · web-flow · commit d0c67ea0645b · 2022-03-30T18:31:33.000+01:00
diff --git a/Misc/NEWS.d/next/Core and Builtins/2022-03-30-02-36-25.bpo-46775.e3Oxqf.rst b/Misc/NEWS.d/next/Core and Builtins/2022-03-30-02-36-25.bpo-46775.e3Oxqf.rst
@@ -0,0 +1,3 @@
+Some Windows system error codes(>= 10000) are now mapped into
+the correct errno and may now raise a subclass of :exc:`OSError`.
+Patch by Dong-hee Na.
diff --git a/Objects/exceptions.c b/Objects/exceptions.c
@@ -1634,14 +1634,7 @@ oserror_parse_args(PyObject **p_args,
             winerrcode = PyLong_AsLong(*winerror);
             if (winerrcode == -1 && PyErr_Occurred())
                 return -1;
-            /* Set errno to the corresponding POSIX errno (overriding
-               first argument).  Windows Socket error codes (>= 10000)
-               have the same value as their POSIX counterparts.
-            */
-            if (winerrcode < 10000)
-                errcode = winerror_to_errno(winerrcode);
-            else
-                errcode = winerrcode;
+            errcode = winerror_to_errno(winerrcode);
             *myerrno = PyLong_FromLong(errcode);
             if (!*myerrno)
                 return -1;

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,3 @@`
	`1`	`+Some Windows system error codes(>= 10000) are now mapped into`
	`2`	+the correct errno and may now raise a subclass of :exc:`OSError`.
	`3`	`+Patch by Dong-hee Na.`