* editfns.c (Finsert_char): Don't dump core with very negative counts.

2 files changed, 4 insertions, 2 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index e7ca102421d..d53817369c0 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,5 +1,7 @@
 2011-06-16  Paul Eggert  <eggert@cs.ucla.edu>
 
+        * editfns.c (Finsert_char): Don't dump core with very negative counts.
+
         * insdel.c (replace_range): Fix buf overflow when insbytes < outgoing.
 
         * insdel.c, lisp.h (buffer_overflow): New function.
diff --git a/src/editfns.c b/src/editfns.c
index dec0133951e..ab17eda86a9 100644
--- a/src/editfns.c
+++ b/src/editfns.c
@@ -2343,11 +2343,11 @@ from adjoining text, if those properties are sticky.  */)
     len = CHAR_STRING (c, str);
   else
     str[0] = c, len = 1;
+  if (XINT (count) <= 0)
+    return Qnil;
   if (BUF_BYTES_MAX / len < XINT (count))
     buffer_overflow ();
   n = XINT (count) * len;
-  if (n <= 0)
-    return Qnil;
   stringlen = min (n, 256 * len);
   string = (char *) alloca (stringlen);
   for (i = 0; i < stringlen; i++)