HEX
Server: Apache/2.4.6 (CentOS) OpenSSL/1.0.2k-fips PHP/7.2.34
System: Linux atalantini.com 3.10.0-1127.13.1.el7.x86_64 #1 SMP Tue Jun 23 15:46:38 UTC 2020 x86_64
User: root (0)
PHP: 7.2.34
Disabled: NONE
Upload Files
File: //usr/share/mysql-test/t/empty_user_table.test
#
# MDEV-4462 mysqld gets SIGFPE when mysql.user table is empty
#

source include/not_embedded.inc;

create table t1 as select * from mysql.user;
truncate table mysql.user;
flush privileges;

# connecting via unix socket gives ER_ACCESS_DENIED_ERROR
# connecting via tcp/ip gives ER_HOST_NOT_PRIVILEGED
--replace_result $MASTER_MYSOCK MASTER_SOCKET $MASTER_MYPORT MASTER_PORT
--error ER_ACCESS_DENIED_ERROR,ER_HOST_NOT_PRIVILEGED
connect (fail,localhost,u1);

insert mysql.user select * from t1;
drop table t1;
flush privileges;