Do we need 'fault detection' and 'watch point' support

[gskachkov]

Thanks Nick, Great work!!!

I've looks to the requirement and have small question, do we need cover two important for me debugging capabilities:

• fault detection
• watchpoints
  or this capabilities out of scope for this document?

[fitzgen]

Thanks @gskachkov!

Regarding fault detection: you mean like pausing on exceptions? I had assumed that would translate into a trap in the wasm, which I assumed engines would already be able to observe, but I suppose for interpreters like mono they will definitely need some kind of hook. Is this along the lines of what you were thinking?

Regarding watchpoints: again, I had assumed that given 2.4.4, a method to find the location of or reconstruct a binding's value, that engines would be able to use their own internal APIs to watch the relevant ranges of memory. The mono/interpreter use case again would probably require some kind of extra dynamic hook. Thoughts?