Fantastic Bugs and Where to Find Them

https://dev.to/tanker/fantastic-bugs-and-where-to-find-them-p1b

by tux3 • 7 years ago

40 5 7 years ago

xiphias2• 7 years ago

It's crazy that the devs could do all this debugging in just 1 week. I think at least 99% of us programmers wouldn't be able to do it. I sometimes hunt for much simpler bugs for much longer time.

g82918• 7 years ago

I don't know about 99%, honestly a lot of this is them working around the tooling in VS.

twhitmore• 7 years ago

When you start stack-swapping, at some point you're going to need to deal with unwinding the stack (exceptions).

What surprises me is that they said that, in most cases, throwing exceptions seemed to work OK!

I would have assumed that if it wasn't properly supported by the Boost Context object, it would have frequently been corrupting memory. Maybe they just never noticed the corruption.

AstralStorm• 7 years ago

The instant they told about null registers I though "someone has corrupted the stack".

From there enabling ASAN or perhaps even stack-protector (even in Release) should've caught it rather quick... (First context switch, likely resume with exception raised.)

Now seeing a crash in exception handler, that is something. It's rather sad they didn't fix Boost.Context, seems like it could always use more platform ifdefs.

masswerk• 7 years ago

I really love debugging stories like this as they provide an opportunity for learning about things, you'd normally won't touch, by providing relatable context.

Fantastic Bugs and Where to Find Them

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