Comment 1 for bug 588251

for MySQL/MariaDB this is rnd_init and this small patch produces about 10 warnings about actual bugs in mysql 5.1.46:

--- ../mysql-5.1.46/sql/handler.h 2010-04-07 00:06:06.000000000 +1000
+++ sql/handler.h 2010-06-01 17:37:48.230727373 +1000
@@ -1188,7 +1188,7 @@
     inited=NONE;
     DBUG_RETURN(index_end());
   }
- int ha_rnd_init(bool scan)
+ int ha_rnd_init(bool scan) __attribute__ ((warn_unused_result))
   {
     int result;
     DBUG_ENTER("ha_rnd_init");