SIGSEGV in query optimizer (in set_check_materialized with MERGE view)

CREATE DATABASE IF NOT EXISTS test_14390;

USE test_14390;

DROP TABLE IF EXISTS a;

DROP TABLE IF EXISTS b;

DROP TABLE IF EXISTS c;

DROP TABLE IF EXISTS d;

DROP TABLE IF EXISTS e;

DROP TABLE IF EXISTS f;

CREATE TABLE a (a1 INT(11) NOT NULL DEFAULT NULL AUTO_INCREMENT PRIMARY KEY);

CREATE TABLE b (b1 INT(11) NOT NULL DEFAULT NULL AUTO_INCREMENT PRIMARY KEY);

CREATE TABLE c (c1 INT(11) NOT NULL DEFAULT NULL AUTO_INCREMENT PRIMARY KEY);

CREATE TABLE d (d1 INT(11) NOT NULL DEFAULT NULL AUTO_INCREMENT PRIMARY KEY);

CREATE TABLE e (e1 INT(11) NOT NULL DEFAULT NULL AUTO_INCREMENT PRIMARY KEY);

CREATE TABLE f (f1 INT(11) NOT NULL DEFAULT NULL AUTO_INCREMENT PRIMARY KEY);

CREATE OR REPLACE view v1 AS

  SELECT 1

  FROM a a_alias_1

    LEFT JOIN (b b_alias_1 JOIN a a_alias_2) ON b_alias_1.b1 = a_alias_1.a1 AND a_alias_2.a1 = a_alias_1.a1

    LEFT JOIN c c_alias_1 ON c_alias_1.c1 = a_alias_1.a1

    LEFT JOIN d d_alias_1 ON d_alias_1.d1 = a_alias_1.a1

    LEFT JOIN c c_alias_2 ON c_alias_2.c1 = a_alias_1.a1

    LEFT JOIN e e_alias_1 ON e_alias_1.e1 = a_alias_1.a1

    LEFT JOIN f f_alias_1 ON f_alias_1.f1 = a_alias_1.a1

;

SELECT 1

FROM (v1 t1)

LEFT OUTER JOIN (v1 t2) ON 1=1

LEFT OUTER JOIN (v1 t3) ON 1=1

LEFT OUTER JOIN (v1 t4) ON 1=1

LEFT OUTER JOIN (v1 t5) ON 1=1

LEFT OUTER JOIN (v1 t6) ON 1=1

LEFT OUTER JOIN (v1 t7) ON 1=1

LEFT OUTER JOIN (v1 t8) ON 1=1

;