--- mysql-5.5.28/storage/myisam/mi_check.c	2012-08-29 04:50:46.000000000 -0400
+++ mysql-5.5.28/storage/myisam/mi_check.c	2013-01-17 17:24:57.985574155 -0500
@@ -1346,7 +1346,8 @@
     if (used != 0 && ! param->error_printed)
     {
       printf("Records:%18s    M.recordlength:%9lu   Packed:%14.0f%%\n",
-	     llstr(records,llbuff), (long)((used-link_used)/records),
+	     llstr(records,llbuff),
+	     (!records ? 0 : (long)((used-link_used)/records)),
 	     (info->s->base.blobs ? 0.0 :
 	      (ulonglong2double((ulonglong) info->s->base.reclength*records)-
 	       my_off_t2double(used))/
@@ -1355,7 +1356,7 @@
 	     (ulonglong2double(used-link_used)/ulonglong2double(used-link_used+empty)*100.0),
 	     (!records ? 100 : (int) (ulonglong2double(del_length+empty)/
 				      my_off_t2double(used)*100.0)),
-	     ulonglong2double(splits - del_blocks) / records);
+	     (!records ? 0 : ulonglong2double(splits - del_blocks) / records));
     }
     printf("Record blocks:%12s    Delete blocks:%10s\n",
 	   llstr(splits-del_blocks,llbuff),llstr(del_blocks,llbuff2));