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A comment on Fantastic Bugs and Where to Find Them.

Re:Fantastic Bugs and Where to Find Them by twhitmore on Wednesday January 22, 2020 @12:15AM (#22114839)
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.

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Re:Fantastic Bugs and Where to Find Them by AstralStorm on Wednesday January 22, 2020 @03:18AM (#22115646)
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.

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