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mariadb/mysql-test/t/default_debug.test
Sergei Golubchik cf00393378 Race condition in DEFAULT() with expressions
Item_default_value::calculate was updating table->s->default_values,
but it is supposed to be read-only
2017-02-13 18:12:04 +01:00

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#
# Race condition in DEFAULT() with expressions
#
source include/have_debug_sync.inc;
create table t1 (a int, b int default (a+1));
insert t1 values (1,10), (2,20), (3,30);
connect (con1, localhost, root);
select a,b,default(b) from t1;
set debug_sync='after_Item_default_value_calculate WAIT_FOR go';
send select a,b,default(b) from t1;
connection default;
set debug_sync='ha_write_row_start SIGNAL go';
insert t1 values (100,default(b));
connection con1;
reap;
connection default;
drop table t1;
set debug_sync='RESET';