1 files changed, 6 insertions, 1 deletions

diff --git a/src/doprnt.c b/src/doprnt.c
index 24eea1e70f6..63f724cf7a7 100644
--- a/src/doprnt.c
+++ b/src/doprnt.c
@@ -104,6 +104,11 @@ doprnt (buffer, bufsize, format, format_end, nargs, args)
             size_bound = -size_bound;
           size_bound += 50;
 
+          if (size_bound > bufsize)
+            /* This is certainly enough that it doesn't matter
+               to lose the rest.  */
+            size_bound = bufsize + 100;
+
           /* Make sure we have that much.  */
           if (size_bound > size_allocated)
             {
@@ -125,7 +130,7 @@ doprnt (buffer, bufsize, format, format_end, nargs, args)
             case 'o':
             case 'x':
               if (cnt == nargs)
-                error ("not enough arguments for format string");
+                error ("Not enough arguments for format string");
               if (sizeof (int) == sizeof (EMACS_INT))
                 ;
               else if (sizeof (long) == sizeof (EMACS_INT))