PyFile_FromFd() uses PyUnicode_DecodeFSDefault() instead of

PyUnicode_FromString() to support surrogates in the filename and use the right
encoding

Misc/NEWS

@@ -12,6 +12,10 @@ What's New in Python 3.2 Alpha 1?
 Core and Builtins
 -----------------
 
+- PyFile_FromFd() uses PyUnicode_DecodeFSDefault() instead of
+  PyUnicode_FromString() to support surrogates in the filename and use the
+  right encoding
+
 - PyUnicode_DecodeFSDefaultAndSize() uses surrogateescape error handler
 
 - Issue #8419: Prevent the dict constructor from accepting non-string keyword

Objects/fileobject.c

@@ -41,7 +41,7 @@ PyFile_FromFd(int fd, char *name, char *mode, int buffering, char *encoding,
 	if (stream == NULL)
 		return NULL;
 	if (name != NULL) {
-		nameobj = PyUnicode_FromString(name);
+		nameobj = PyUnicode_DecodeFSDefault(name);
 		if (nameobj == NULL)
 			PyErr_Clear();
 		else {