Add _REGEX_UTILS_H to avoid duplication.

25 years ago · a0fa71837a
parent 74b0a18b6b
commit a0fa71837a
1 changed files with 5 additions and 0 deletions
--- a/src/include/regex/utils.h
+++ b/src/include/regex/utils.h
@ -37,6 +37,9 @@
 *		@(#)utils.h		8.3 (Berkeley) 3/20/94
 */

+#ifndef _REGEX_UTILS_H
+#define _REGEX_UTILS_H
+
 #include <limits.h>

 /* utility definitions */
@ -57,3 +60,5 @@ typedef unsigned char uch;
 #define NDEBUG					/* no assertions please */
 #endif
 #endif
+
+#endif	/* _REGEX_UTILS_H */