2015-02-19  Jon TURNEY  <jon.turney@dronecode.org.uk>

	* include/cygwin/stdlib.h (initstate, random, setstate, srandom):
	Check if __XSI_VISIBLE is set by sys/cdefs.h, rather than testing
	for _XOPEN_SOURCE directly, to work correctly when _GNU_SOURCE is
	set.

Index: cygwin/include/cygwin/stdlib.h
===================================================================
RCS file: /cvs/src/src/winsup/cygwin/include/cygwin/stdlib.h,v
retrieving revision 1.17
diff -u -u -p -r1.17 stdlib.h
--- cygwin/include/cygwin/stdlib.h	9 Dec 2013 10:12:42 -0000	1.17
+++ cygwin/include/cygwin/stdlib.h	19 Feb 2015 12:41:00 -0000
@@ -11,6 +11,7 @@ details. */
 #ifndef _CYGWIN_STDLIB_H
 #define _CYGWIN_STDLIB_H
 
+#include <sys/cdefs.h>
 #include <cygwin/wait.h>
 
 #ifdef __cplusplus
@@ -31,9 +32,7 @@ void	setprogname (const char *);
 char *canonicalize_file_name (const char *);
 int unsetenv (const char *);
 #endif /*__STRICT_ANSI__*/
-#if !defined(__STRICT_ANSI__) \
-    || (defined(_XOPEN_SOURCE) \
-	&& ((_XOPEN_SOURCE - 0 >= 500) || defined(_XOPEN_SOURCE_EXTENDED)))
+#if !defined(__STRICT_ANSI__) || (__XSI_VISIBLE >= 500)
 char *initstate (unsigned seed, char *state, size_t size);
 long random (void);
 char *setstate (const char *state);