Bug fix in regex.

2 files changed, 6 insertions, 1 deletions

diff --git a/ChangeLog b/ChangeLog
index 7a0e6da8..6f81613a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2013-12-19         Arnold D. Robbins     <arnold@skeeve.com>
+
+	* regexec.c (re_search_internal): Make sure `dfa' pointer is
+	not NULL before trying to dereference it.
+
 2013-12-16         Arnold D. Robbins     <arnold@skeeve.com>
 
 	* configure.ac (AC_FUNC_VPRINTF): Remove. Not needed on current
diff --git a/regexec.c b/regexec.c
index a39e1f58..77795f69 100644
--- a/regexec.c
+++ b/regexec.c
@@ -664,7 +664,7 @@ re_search_internal (preg, string, length, start, range, stop, nmatch, pmatch,
   nmatch -= extra_nmatch;
 
   /* Check if the DFA haven't been compiled.  */
-  if (BE (preg->used == 0 || dfa->init_state == NULL
+  if (BE (preg->used == 0 || dfa == NULL || dfa->init_state == NULL
 	  || dfa->init_state_word == NULL || dfa->init_state_nl == NULL
 	  || dfa->init_state_begbuf == NULL, 0))
     return REG_NOMATCH;