Backport trunk's r43510: In the fdopen(fd, 'a') case on UNIX, don't try to

Yhg1s · Yhg1s · commit fe1c16f4bee3 · 2006-03-31T22:39:56.000Z
set fd's flags to -1 if fcntl() and fdopen() both fail.
diff --git a/Modules/posixmodule.c b/Modules/posixmodule.c
@@ -5467,7 +5467,7 @@ posix_fdopen(PyObject *self, PyObject *args)
 		if (flags != -1)
 			fcntl(fd, F_SETFL, flags | O_APPEND);
 		fp = fdopen(fd, mode);
-		if (fp == NULL)
+		if (fp == NULL && flags != -1)
 			/* restore old mode if fdopen failed */
 			fcntl(fd, F_SETFL, flags);
 	} else {
