bug#24201: 25.1.50; TLS connections sometimes hang

[Lars Ingebrigtsen]

Eli Zaretskii <eliz@gnu.org> writes:

> Each time "finish" doesn't return you have a call to funcall and 2
> calls to exec_byte_code above it.  Can you tell what function is being
> called by funcall?  It's easy: after you get to that frame, and see
> this:
>
>   Ffuncall (nargs=4, args=args@entry=0x7fffffffb420) at eval.c:2826
>   2826          lisp_eval_depth--;
>   Value returned is $12 = (union Lisp_X *) 0x0
>
> don't type "finish", but instead do this:
>
>   (gdb) p args[0]
>   (gdb) xsymbol

[...]

> Once you see the name of that function, look at its caller's code, and
> try to figure out what are the two levels of exec_byte_code above
> Ffuncall doing, and through this why they might loop.

Ah, OK, I'll try that the next time this happens.

Thanks; I'm a total novice at using gdb to debug Emacs...

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