Crash on insert with PARTITION clause after TRUNCATE

Mysqld receives segfault (signal 11) on an insert statement following a truncate partition. It only happens if the insert has a PARTITION clause. If there are any other operations on the table without a PARTITION clause between the truncate and the insert, the crash does not occur.

I tested in 10.4.8-MariaDB-1:10.4.8+maria~bionic-log in docker container, as well as 10.4.8-MariaDB-log on an Amazon Linux server.

The error did not occur in version 10.2 which I was running previously in the Amazon Linux server.

I have attached a sql script which can reproduce the crash on my docker container running 10.4.8 (docker image tagged 10.4 hash 92495405fc36).

When producing the reproduction script I found that the error only occurred when the table had an AUTO_INCREMENT column. Without the AUTO_INCREMENT, no crash occurred.