Description: We need __EXTENSIONS__ if _GNU_SOURCE is defined
Index: b/usr/src/head/stdio.h
===================================================================
--- a/usr/src/head/stdio.h	2014-03-02 23:19:47.246291390 +0400
+++ b/usr/src/head/stdio.h	2014-03-02 23:23:45.069580816 +0400
@@ -33,7 +33,7 @@
 #ifndef _STDIO_H
 #define	_STDIO_H
 
-#include <sys/feature_tests.h>
+#include <features.h>
 
 #ifdef	__cplusplus
 extern "C" {