Bug #46425 crash in Diagnostics_area::set_ok_status , empty statement,

           DELETE IGNORE

The ER_CANT_UPDATE_USED_TABLE_IN_SF_OR_TRG error was set in the
diagnostics area when it happened, but the DELETE cleanup code
never checked for a non-fatal error condition, thus trying to
set diag.area to "ok".  This triggered an assert checking that
the diag.area was empty.

The fix was to test if there existed a non-fatal error condition
(thd->is_error() before ok'ing the operation.

mysql-test/r/delete.result

@@ -324,3 +324,16 @@ a
 1
 2
 DROP TABLE t1, t2, t3;
+#
+# Bug #46425 crash in Diagnostics_area::set_ok_status, 
+#            empty statement, DELETE IGNORE
+#
+CREATE table t1 (i INTEGER);
+INSERT INTO t1 VALUES (1);
+CREATE TRIGGER tr1 AFTER DELETE ON t1 FOR EACH ROW 
+BEGIN 
+INSERT INTO t1 SELECT * FROM t1 AS A;
+END |
+DELETE IGNORE FROM t1;
+ERROR HY000: Can't update table 't1' in stored function/trigger because it is already used by statement which invoked this stored function/trigger.
+DROP TABLE t1;

mysql-test/t/delete.test

@@ -336,3 +336,25 @@ SELECT * FROM t2;
 SELECT * FROM t3;
 
 DROP TABLE t1, t2, t3;
+
+--echo #
+--echo # Bug #46425 crash in Diagnostics_area::set_ok_status, 
+--echo #            empty statement, DELETE IGNORE
+--echo #
+
+CREATE table t1 (i INTEGER);
+
+INSERT INTO t1 VALUES (1);
+
+--delimiter |
+
+CREATE TRIGGER tr1 AFTER DELETE ON t1 FOR EACH ROW 
+BEGIN 
+  INSERT INTO t1 SELECT * FROM t1 AS A;
+END |
+
+--delimiter ;
+--error ER_CANT_UPDATE_USED_TABLE_IN_SF_OR_TRG
+DELETE IGNORE FROM t1;
+
+DROP TABLE t1;
\ No newline at end of file

sql/sql_delete.cc

@@ -426,7 +426,8 @@ bool mysql_delete(THD *thd, TABLE_LIST *table_list, COND *conds,
   }
   DBUG_ASSERT(transactional_table || !deleted || thd->transaction.stmt.modified_non_trans_table);
   free_underlaid_joins(thd, select_lex);
-  if (error < 0 || (thd->lex->ignore && !thd->is_fatal_error))
+  if (error < 0 || 
+      (thd->lex->ignore && !thd->is_error() && !thd->is_fatal_error))
   {
     /*
       If a TRUNCATE TABLE was issued, the number of rows should be reported as