===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/mandoc/Attic/mdoc_hash.c,v
retrieving revision 1.18
retrieving revision 1.19
diff -c -r1.18 -r1.19
*** src/usr.bin/mandoc/Attic/mdoc_hash.c	2015/04/02 22:06:17	1.18
--- src/usr.bin/mandoc/Attic/mdoc_hash.c	2015/04/18 17:01:28	1.19
***************
*** 1,4 ****
! /*	$OpenBSD: mdoc_hash.c,v 1.18 2015/04/02 22:06:17 schwarze Exp $ */
  /*
   * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@bsd.lv>
   *
--- 1,4 ----
! /*	$OpenBSD: mdoc_hash.c,v 1.19 2015/04/18 17:01:28 schwarze Exp $ */
  /*
   * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@bsd.lv>
   *
***************
*** 30,44 ****
  static	unsigned char	 table[27 * 12];
  
  
- /*
-  * XXX - this hash has global scope, so if intended for use as a library
-  * with multiple callers, it will need re-invocation protection.
-  */
  void
  mdoc_hash_init(void)
  {
  	int		 i, j, major;
  	const char	*p;
  
  	memset(table, UCHAR_MAX, sizeof(table));
  
--- 30,43 ----
  static	unsigned char	 table[27 * 12];
  
  
  void
  mdoc_hash_init(void)
  {
  	int		 i, j, major;
  	const char	*p;
+ 
+ 	if (*table != '\0')
+ 		return;
  
  	memset(table, UCHAR_MAX, sizeof(table));