I was updating the code to the latest version of the GStreamer Rust bindings. I ended up touching A LOT of parts in almost every file, so the diff was huge. The biggest culprit was a change in the timestamps API, and we do a lot of things with timestamps, so everything related needed to be updated.<\/p>\n\n\n\n
After finally getting everything to compile, I tried running the automated tests to see what went wrong there. All tests passed, apart from one.<\/p>\n\n\n\n
This was a bit tricky. It’s not like half of them are failing, which would mean that I missed something fundamental. It’s also not like they’re all passing, which would mean that everything is fine. It’s just one test, and it’s timing out. Timeout means “I had to do a series of many tasks in the background and they’re still not done”, so it’s not exactly hinting at where exactly the issue is.<\/p>\n\n\n\n
Fortunately we have an auto-generated API schema file, which describes all commands, with their parameters, types, and default values. I had a diff in that file and had initially not paid attention to it. So I looked at the diff and saw the problem.<\/p>\n\n\n\n
I had missed one single M.<\/p>\n\n\n\n
So, instead of having the code buffer for 125 milliseconds by default, it was buffering for 125 seconds.<\/p>\n\n\n\n
That’s the kind of bug that the compiler wouldn’t possibly catch. I mean, “buffer for 125 seconds”, looks legitimate at a first glance, doesn’t it?<\/p>\n","protected":false},"excerpt":{"rendered":"
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