Test case (bug #9756: mysql client failing on dumps containing certain \ sequences).

mysql-test/r/mysqldump.result

@@ -599,3 +599,35 @@ UNLOCK TABLES;
 /*!40111 SET SQL_NOTES=@OLD_SQL_NOTES */;
 
 DROP TABLE t1;
+CREATE TABLE t1 (a char(10));
+INSERT INTO t1 VALUES ('\'');
+
+/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;
+/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;
+/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;
+/*!40101 SET NAMES utf8 */;
+/*!40014 SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0 */;
+/*!40014 SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0 */;
+/*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='NO_AUTO_VALUE_ON_ZERO' */;
+/*!40111 SET @OLD_SQL_NOTES=@@SQL_NOTES, SQL_NOTES=0 */;
+DROP TABLE IF EXISTS `t1`;
+CREATE TABLE `t1` (
+  `a` char(10) default NULL
+) ENGINE=MyISAM DEFAULT CHARSET=latin1;
+
+
+/*!40000 ALTER TABLE `t1` DISABLE KEYS */;
+LOCK TABLES `t1` WRITE;
+INSERT INTO `t1` VALUES ('\'');
+UNLOCK TABLES;
+/*!40000 ALTER TABLE `t1` ENABLE KEYS */;
+
+/*!40101 SET SQL_MODE=@OLD_SQL_MODE */;
+/*!40014 SET FOREIGN_KEY_CHECKS=@OLD_FOREIGN_KEY_CHECKS */;
+/*!40014 SET UNIQUE_CHECKS=@OLD_UNIQUE_CHECKS */;
+/*!40101 SET CHARACTER_SET_CLIENT=@OLD_CHARACTER_SET_CLIENT */;
+/*!40101 SET CHARACTER_SET_RESULTS=@OLD_CHARACTER_SET_RESULTS */;
+/*!40101 SET COLLATION_CONNECTION=@OLD_COLLATION_CONNECTION */;
+/*!40111 SET SQL_NOTES=@OLD_SQL_NOTES */;
+
+DROP TABLE t1;

mysql-test/t/mysqldump.test

@@ -196,3 +196,11 @@ INSERT INTO `t1` VALUES (0x602010000280100005E71A);
 --exec $MYSQL_DUMP --skip-extended-insert --hex-blob test --skip-comments t1
 DROP TABLE t1;
 
+#
+# Bug #9756
+#
+
+CREATE TABLE t1 (a char(10));
+INSERT INTO t1 VALUES ('\'');
+--exec $MYSQL_DUMP --skip-comments test t1
+DROP TABLE t1;