1 files changed, 3 insertions, 1 deletions
diff --git a/dfa.c b/dfa.c
index 650ceac0..7dbc4e9b 100644
--- a/dfa.c
+++ b/dfa.c
@@ -1001,8 +1001,10 @@ parse_bracket_exp (void)
                   /* Defer to the system regex library about the meaning
                      of range expressions.  */
                   regex_t re;
-                  char pattern[6] = { '[', c1, '-', c2, ']', 0 };
+                  char pattern[6] = { '[', 0, '-', 0, ']', 0 };
                   char subject[2] = { 0, 0 };
+		  pattern[1] = c1;
+		  pattern[3] = c2;
                   regcomp (&re, pattern, REG_NOSUB);
                   for (c = 0; c < NOTCHAR; ++c)
                     {