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Re: Debugging ghc6: Was: Re: Failure: ghc ...

From: Samuel Thibault
Subject: Re: Debugging ghc6: Was: Re: Failure: ghc ...
Date: Thu, 14 Apr 2011 15:07:14 +0200
User-agent: Mutt/1.5.12-2006-07-14

Svante Signell, le Thu 14 Apr 2011 15:00:26 +0200, a écrit :
> On Wed, 2011-04-13 at 19:22 +0200, Samuel Thibault wrote:
> > Svante Signell, le Wed 13 Apr 2011 16:14:54 +0200, a écrit :
> > > Failure: The ghc6 build hangs at the same place also as root (and with
> > > the timer watchdog disabled). What to do next??
> > 
> > Run gdb on the pflocal process to check out what's happening (i.e.
> > variables, pipe state, etc.) on that end of the calls that holds ghc6.
> Easy to say, harder to do.

Of course. That's what debugging is all about: you have to find out
where to look at. And there's no magic recipe. So I can't say much
without doing it myself.

> I'm not fluent with the pflocal/libpipe code.

I'm not either, and I don't think anybody on the list is really. Dive
into the code, understand it, etc.... the usual stuff when debugging
something that isn't your own code.

> I just skimmed through pipe.{c,h}.  I need help from some experienced
> Hurd hacker here. I can follow instructions, but they have to come
> from that person.

Giving you instructions would basically mean doing the whole debugging
thing, for which I don't have the time now.


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