(Freplace_match): Handle case of `\N' in the

replacement when there's no group N.

1 files changed, 7 insertions, 4 deletions

diff --git a/src/search.c b/src/search.c
index 34dcc7e78a2..b80c1411cf6 100644
--- a/src/search.c
+++ b/src/search.c
@@ -2454,8 +2454,8 @@ since only regular expressions have distinguished subexpressions.")
       for (pos_byte = 0, pos = 0; pos_byte < length;)
         {
           unsigned char str[MAX_MULTIBYTE_LENGTH];
-          unsigned char *add_stuff;
-          int add_len;
+          unsigned char *add_stuff = NULL;
+          int add_len = 0;
           int idx = -1;
 
           if (str_multibyte)
@@ -2535,8 +2535,11 @@ since only regular expressions have distinguished subexpressions.")
             }
 
           /* Now add to the end of SUBSTED.  */
-          bcopy (add_stuff, substed + substed_len, add_len);
-          substed_len += add_len;
+          if (add_stuff)
+            {
+              bcopy (add_stuff, substed + substed_len, add_len);
+              substed_len += add_len;
+            }
         }
 
       /* Now insert what we accumulated.  */