hayeah / go-kallax-bug

minimal test case for kallax buffer reuse bug

See workaround

Build & Run

go get -u github.com/hayeah/go-kallax-bug
go-kallax-bug

Output would be something like:

// ...

obj.Data: abff8e1e90dd27df343ebef523e241326bd6a1490f960d07ee3095df7f6850e0
obj.Data2: c83aa6f5aa1f489df8ccaa55eac71eb293d27637be03a55d777fefcd24796f43

// ...

after update obj.Data: 0001310000000135000045000000090000000000530000000431205748455245
after update obj.Data2: 2432000000440000000753330053000000047637be03a55d777fefcd24796f43

We expect Data and Data2 to be the same after update (since only Counter is updated).

Workaround

This problem seems to manifest when using github.com/lib/pq.

Change to github.com/jackc/pgx/stdlib, and the problem goes away.

Create Database

CREATE database kallax_test;

Run all migrations:

kallax migrate up --dsn 'localhost/kallax_test?sslmode=disable' --all

TODO

• try a different DB driver?