===================================================================
RCS file: /cvs/mandoc/test-strcasestr.c,v
retrieving revision 1.2
retrieving revision 1.4
diff -u -p -r1.2 -r1.4
--- mandoc/test-strcasestr.c	2014/08/05 16:03:03	1.2
+++ mandoc/test-strcasestr.c	2018/08/15 02:15:52	1.4
@@ -1,7 +1,3 @@
-#if defined(__linux__) || defined(__MINT__)
-# define _GNU_SOURCE /* strcasestr() */
-#endif
-
 #include <string.h>
 
 int
@@ -9,5 +5,5 @@ main(void)
 {
 	const char *big = "BigString";
 	char *cp = strcasestr(big, "Gst");
-	return(big + 2 != cp);
+	return cp != big + 2;
 }