* FYI, infloop is actually at a higher level
@ 2009-12-16 15:55 Jim Meyering
2009-12-16 16:17 ` Chong Yidong
0 siblings, 1 reply; 3+ messages in thread
From: Jim Meyering @ 2009-12-16 15:55 UTC (permalink / raw)
To: Emacs development discussions
I reported an unbreakable infloop in re_match_2_internal, but in fact,
C-g does break out of it. It's just that immediately afterwards,
execution immediately returns to and gets stuck in that same
seemingly-infinite loop.
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: FYI, infloop is actually at a higher level
2009-12-16 15:55 FYI, infloop is actually at a higher level Jim Meyering
@ 2009-12-16 16:17 ` Chong Yidong
2009-12-16 16:33 ` Jim Meyering
0 siblings, 1 reply; 3+ messages in thread
From: Chong Yidong @ 2009-12-16 16:17 UTC (permalink / raw)
To: Jim Meyering; +Cc: Emacs development discussions
Jim Meyering <jim@meyering.net> writes:
> I reported an unbreakable infloop in re_match_2_internal, but in fact,
> C-g does break out of it. It's just that immediately afterwards,
> execution immediately returns to and gets stuck in that same
> seemingly-infinite loop.
If it's looping in Lisp, it probably needs to be debugged in Lisp. Is
there a simple way to reproduce this?
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: FYI, infloop is actually at a higher level
2009-12-16 16:17 ` Chong Yidong
@ 2009-12-16 16:33 ` Jim Meyering
0 siblings, 0 replies; 3+ messages in thread
From: Jim Meyering @ 2009-12-16 16:33 UTC (permalink / raw)
To: Chong Yidong; +Cc: Emacs development discussions
Chong Yidong wrote:
> Jim Meyering <jim@meyering.net> writes:
>
>> I reported an unbreakable infloop in re_match_2_internal, but in fact,
>> C-g does break out of it. It's just that immediately afterwards,
>> execution immediately returns to and gets stuck in that same
>> seemingly-infinite loop.
>
> If it's looping in Lisp, it probably needs to be debugged in Lisp. Is
> there a simple way to reproduce this?
Thanks for the quick reply.
I see two problems:
- re_match_2_internal does get into a seemingly infinite loop
(minutes of CPU time in that function -- though I suppose it
could merely be taking a very long time due to a pathological
re/pattern pair)
- going back into the same loop after C-g seems wrong
I'll try to narrow it down, but will be traveling for a couple
of days, so I probably won't get to it until next week.
^ permalink raw reply [flat|nested] 3+ messages in thread
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2009-12-16 15:55 FYI, infloop is actually at a higher level Jim Meyering
2009-12-16 16:17 ` Chong Yidong
2009-12-16 16:33 ` Jim Meyering
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