Fixed BUG#8762: Stored Procedures: Inconsistent behavior

                of DROP PROCEDURE IF EXISTS statement.


mysql-test/r/sp.result:
  New test case for BUG#8757
mysql-test/t/sp.test:
  New test case for BUG#8757
sql/sp.cc:
  Don't zap lex->found_semicolon. (For compound statements)

mysql-test/r/sp.result

@@ -2204,6 +2204,10 @@ call bug8757()|
 delete from t1|
 delete from t2|
 drop procedure bug8757|
+drop procedure if exists bug8762|
+drop procedure if exists bug8762; create procedure bug8762() begin end|
+drop procedure if exists bug8762; create procedure bug8762() begin end|
+drop procedure bug8762|
 drop table if exists fac|
 create table fac (n int unsigned not null primary key, f bigint unsigned)|
 drop procedure if exists ifac|

mysql-test/t/sp.test

@@ -2714,6 +2714,19 @@ delete from t2|
 drop procedure bug8757|
 
 
+#
+# BUG#8762: Stored Procedures: Inconsistent behavior
+#           of DROP PROCEDURE IF EXISTS statement.
+--disable_warnings
+drop procedure if exists bug8762|
+--enable_warnings
+# Doesn't exist
+drop procedure if exists bug8762; create procedure bug8762() begin end|
+# Does exist
+drop procedure if exists bug8762; create procedure bug8762() begin end|
+drop procedure bug8762|
+
+
 #
 # Some "real" examples
 #

sql/sp.cc

@@ -288,12 +288,14 @@ db_find_routine(THD *thd, int type, sp_name *name, sp_head **sphp)
        * in thd->lex (the unit and master stuff), and the easiest way to
        * do it is, is to call mysql_init_query(), but this unfortunately
        * resets teh value_list where we keep the CALL parameters. So we
-       * copy the list and then restore it.
+       * copy the list and then restore it. (... and found_semicolon too).
        */
-      List<Item> vals= thd->lex->value_list;
+      List<Item> tmpvals= thd->lex->value_list;
+      char *tmpfsc= thd->lex->found_semicolon;
 
       lex_start(thd, (uchar*)defstr.c_ptr(), defstr.length());
-      thd->lex->value_list= vals;
+      thd->lex->value_list= tmpvals;
+      thd->lex->found_semicolon= tmpfsc;
     }
 
     if (yyparse(thd) || thd->is_fatal_error || thd->lex->sphead == NULL)