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Re: Problem with apply-frame trap in 1.6 and 1.7
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From: |
Marius Vollmer |
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Subject: |
Re: Problem with apply-frame trap in 1.6 and 1.7 |
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Date: |
Thu, 04 Nov 2004 16:57:57 +0100 |
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User-agent: |
Gnus/5.1003 (Gnus v5.10.3) Emacs/21.3 (gnu/linux) |
Neil Jerram <address@hidden> writes:
> Working on breakpoints for 1.6.x, I just discovered that the
> following ENTER_APPLY trap code in eval.c goes into a tight busy loop
> if (debug-enable 'trace) and (trap-set! apply-frame-handler non-#f).
>
> if (CHECK_APPLY && SCM_TRAPS_P)\
> if (SCM_APPLY_FRAME_P || (SCM_TRACE_P && PROCTRACEP (proc)))\
>
> This is because PROCTRACEP uses scm_procedure_property, which itself
> uses apply if proc is not a closure.
Hmm, I can't find the place where scm_procedure_property calls apply.
Could you give me a hint? Hopefully, there is some misunderstanding
on your part so that we can avoid making subrs untraceable. (Which is
what your proposed change does, right?)