From 4f18168755c70b65b071d2888c1e7f7fe4c5fd6c Mon Sep 17 00:00:00 2001
From: Jacob Nevins <jacobn@chiark.greenend.org.uk>
Date: Thu, 17 Feb 2005 21:41:59 +0000
Subject: Replace crash with assertion failure if we attempt to xref a
 non-existent name.

[originally from svn r5336]
---
 bk_html.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/bk_html.c b/bk_html.c
index 5babfda..ce1dc4a 100644
--- a/bk_html.c
+++ b/bk_html.c
@@ -1625,8 +1625,12 @@ static void html_words(htmloutput *ho, word *words, int flags,
       case word_LowerXref:
 	if (flags & LINKS) {
 	    keyword *kwl = kw_lookup(keywords, w->text);
-	    paragraph *p = kwl->para;
-	    htmlsect *s = (htmlsect *)p->private_data;
+	    paragraph *p;
+	    htmlsect *s;
+
+	    assert(kwl);
+	    p = kwl->para;
+	    s = (htmlsect *)p->private_data;
 
 	    assert(s);
 
-- 
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