Add test case for BUG#27592: stack overrun when storing datetime

value using prepared statements.

tests/mysql_client_test.c

@@ -15623,6 +15623,59 @@ static void test_bug27876()
 }
 
 
+/*
+  Bug#27592 (stack overrun when storing datetime value using prepared statements)
+*/
+
+static void test_bug27592()
+{
+  const int NUM_ITERATIONS= 40;
+  int i;
+  int rc;
+  MYSQL_STMT *stmt= NULL;
+  MYSQL_BIND bind[1];
+  MYSQL_TIME time_val;
+
+  DBUG_ENTER("test_bug27592");
+  myheader("test_bug27592");
+
+  mysql_query(mysql, "DROP TABLE IF EXISTS t1");
+  mysql_query(mysql, "CREATE TABLE t1(c2 DATETIME)");
+
+  stmt= mysql_simple_prepare(mysql, "INSERT INTO t1 VALUES (?)");
+  DIE_UNLESS(stmt);
+
+  memset(bind, 0, sizeof(bind));
+
+  bind[0].buffer_type= MYSQL_TYPE_DATETIME;
+  bind[0].buffer= (char *) &time_val;
+  bind[0].length= NULL;
+
+  for (i= 0; i < NUM_ITERATIONS; i++)
+  {
+    time_val.year=1000+lrand48()%1000;
+    time_val.month=1+lrand48()%12;
+    time_val.day=1+lrand48()%31;
+    time_val.hour=lrand48()%23;
+    time_val.minute=lrand48()%59;
+    time_val.second=lrand48()%59;
+
+    time_val.second_part=0;
+    time_val.neg=0;
+
+    rc= mysql_stmt_bind_param(stmt, bind);
+    check_execute(stmt, rc);
+
+    rc= mysql_stmt_execute(stmt);
+    check_execute(stmt, rc);
+  }
+
+  mysql_stmt_close(stmt);
+
+  DBUG_VOID_RETURN;
+}
+
+
 /*
   Read and parse arguments and MySQL options from my.cnf
 */
@@ -15904,6 +15957,7 @@ static struct my_tests_st my_tests[]= {
   { "test_bug21635", test_bug21635 },
   { "test_bug24179", test_bug24179 },
   { "test_bug27876", test_bug27876 },
+  { "test_bug27592", test_bug27592 },
   { 0, 0 }
 };