Delete five standards that are:

[mandoc.git] / eqn.c

diff --git a/eqn.c b/eqn.c
index 31e674d06c2febe822d105fd009965052028c02f..a64031b29b9c8e158eee91e685b711053cd2e170 100644 (file)
--- a/eqn.c
+++ b/eqn.c
@@ -1,4 +1,4 @@
-/*     $Id: eqn.c,v 1.55 2014/10/25 14:35:37 schwarze Exp $ */
+/*     $Id: eqn.c,v 1.56 2014/10/25 15:06:30 schwarze Exp $ */
 /*
  * Copyright (c) 2011, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
  * Copyright (c) 2014 Ingo Schwarze <schwarze@openbsd.org>
@@ -684,7 +684,9 @@ eqn_parse(struct eqn_node *ep, struct eqn_box *parent)
        char             sym[64];
        const char      *start;
 
-       assert(NULL != parent);
+       assert(parent != NULL);
+       if (ep->data == NULL)
+               return(-1);
 
 next_tok:
        tok = eqn_tok_parse(ep, &p);