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diff --git a/mysql-test/r/sp_sync.result b/mysql-test/r/sp_sync.result
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+Tests of syncronization of stored procedure execution.
+#
+# Bug#48157: crash in Item_field::used_tables
+#
+CREATE TABLE t1 AS SELECT 1 AS a, 1 AS b;
+CREATE TABLE t2 AS SELECT 1 AS a, 1 AS b;
+CREATE PROCEDURE p1()
+BEGIN
+UPDATE t1 JOIN t2 USING( a, b ) SET t1.b = 1, t2.b = 1;
+END|
+LOCK TABLES t1 WRITE, t2 WRITE;
+SET DEBUG_SYNC = 'multi_update_reopen_tables SIGNAL parked WAIT_FOR go';
+CALL p1();
+DROP TABLE t1, t2;
+SET DEBUG_SYNC = 'now WAIT_FOR parked';
+CREATE TABLE t1 AS SELECT 1 AS a, 1 AS b;
+CREATE TABLE t2 AS SELECT 1 AS a, 1 AS b;
+SET DEBUG_SYNC = 'now SIGNAL go';
+# Without the DEBUG_SYNC supplied in the same patch as this test in the 
+# code, this test statement will hang.
+DROP TABLE t1, t2;
+DROP PROCEDURE p1;
+SET DEBUG_SYNC = 'RESET';