1 files changed, 2 insertions, 2 deletions
diff --git a/regexec.c b/regexec.c
index c011480ec8..24422b1671 100644
--- a/regexec.c
+++ b/regexec.c
@@ -1300,13 +1300,13 @@ match_at(regex_t* reg, const UChar* str, const UChar* end,
   s = (UChar* )sstart;
   while (1) {
 #ifdef ONIG_DEBUG_MATCH
-    {
+    if (s) {
       UChar *q, *bp, buf[50];
       int len;
       fprintf(stderr, "%4d> \"", (int )(s - str));
       bp = buf;
       for (i = 0, q = s; i < 7 && q < end; i++) {
-	len = enclen(encode, q);
+	len = enclen(encode, q, end);
 	while (len-- > 0) *bp++ = *q++;
       }
       if (q < end) { xmemcpy(bp, "...\"", 4); bp += 4; }