Fix typo (__GNU_SOURCE -> __USE_GNU).

diff --git a/string/bits/string2.h b/string/bits/string2.h
index 7f33303e6429b4eecd106fc4d8e04e196184fe70..6b81c1fafabb08a41fc44737d568d364825c9f00 100644 (file)
--- a/string/bits/string2.h
+++ b/string/bits/string2.h
@@ -1226,7 +1226,7 @@ __strsep_g (char **__s, __const char *__reject)
                          __retval; }))                                       \
                  : __strndup ((s), (n))))
 
-#  ifdef __GNU_SOURCE
+#  ifdef __USE_GNU
 #   define strndup(s, n) __strndup ((s), (n))
 #  endif
 # endif