support stepping into the standard libarary about godebug

[pwaller]

Along these lines, I need to place a breakpoint in the standard library. I'm currently hitting net/http.ErrBodyReadAfterClose, and it's very difficult to tell why, so I want to set breakpoints in bufio and net/http, which I take it isn't possible or easy right now.

[jeffallen]

I just hit this problem, and I wasted a significant amount of time on it. :(

[jeremyschlatter]

@jeffallen sorry to hear that :( Is there some UX change we could make that would at least make it more obvious what was going on?

[jeffallen]

Well, it would be awesone if right before you stepped into non insrumented code it told you. Don't know if this is possible without too much overhead...

[jeremyschlatter]

Here's one idea: when the user runs "step", parse the next line and see if it contains a function call. Then run as normal until we hit the next godebug.Line call. If that call is in the same function as before -- we had no intervening godebug.EnterFunc or godebug.ExitFunc calls -- and we saw a function call in the code for the previous line, report to the user that it stepped over a function call, probably because the function was not instrumented.

[jeffallen]

+1
On Jun 21, 2015 7:24 AM, "Jeremy Schlatter" [email protected]
wrote:

Here's one idea: when the user runs "step", parse the next line and see if
it contains a function call. Then run as normal until we hit the next
godebug.Line call. If that call is in the same function as before -- we
had no intervening godebug.EnterFunc or godebug.ExitFunc calls -- and we
saw a function call in the code for the previous line, report to the user
that it stepped over a function call, probably because the function was not
instrumented.

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[andradei]

👍 Oh how much I wish for the std lib support

[doublerebel]

👍