MDEV-30277: Assertion failure in Diagnostics_area::set_error_status

/ Reprepare_observer::report_error

Analysis:
Error is not reported when we hit invalid default parameter error
Fix:
Return appropriate value on error.

Author: mariadb-RuchaDeodhar

mysql-test/main/ps.result

@@ -6047,3 +6047,15 @@ a	b	c
 1	1970-01-01 09:00:01	6
 DROP TABLE t;
 # End of 10.6 tests
+# Beginning of 10.11 test
+#
+# MDEV-30277: Assertion failure in Diagnostics_area::set_error_status
+# / Reprepare_observer::report_error
+#
+CREATE TABLE t (a INT);
+PREPARE stmt FROM " DELETE FROM t LIMIT ?";
+ALTER TABLE t FORCE;
+EXECUTE stmt USING DEFAULT;
+ERROR HY000: Default/ignore value is not supported for such parameter usage
+DROP TABLE t;
+# End of 10.11 test

mysql-test/main/ps.test

@@ -5498,3 +5498,20 @@ SELECT * FROM t;
 
 DROP TABLE t;
 --echo # End of 10.6 tests
+
+--echo # Beginning of 10.11 test
+
+--echo #
+--echo # MDEV-30277: Assertion failure in Diagnostics_area::set_error_status
+--echo # / Reprepare_observer::report_error
+--echo #
+
+CREATE TABLE t (a INT);
+PREPARE stmt FROM " DELETE FROM t LIMIT ?";
+ALTER TABLE t FORCE;
+--error ER_INVALID_DEFAULT_PARAM
+EXECUTE stmt USING DEFAULT;
+
+DROP TABLE t;
+
+--echo # End of 10.11 test

sql/sql_parse.cc

@@ -4894,6 +4894,9 @@ mysql_execute_command(THD *thd, bool is_called_from_prepared_stmt)
     DBUG_ASSERT(select_lex->limit_params.offset_limit == 0);
     unit->set_limit(select_lex);
 
+    if (thd->is_error())
+      goto error;
+
     MYSQL_DELETE_START(thd->query());
     Protocol *save_protocol= NULL;