[Haskell-beginners] debugging help

[Dennis Raddle]

I started by looking everywhere I thought I called printf in this
particular case, and couldn't find a single problematic printf. Given the
input I was using, I thought I knew where the printf was probably going to
be. But that failed, and there are hundreds throughout the rest of the
program. (I use them for generating output and warning/error messages--- I
happen to like the format string method of describing your output.)

Then I thought, I sure would like to learn more about the debugger and
profiling, so I thought it was worth asking. I never have gotten clear on
how to compile libraries for profiling.

While waiting for a reply here, it struck me where the printf was, and I
found it and solved the problem. So there's not an immediate need for the
stack trace.

D


On Sat, Dec 5, 2015 at 12:11 AM, Magnus Therning <magnus at therning.org>
wrote:

>
> Dennis Raddle writes:
>
> > I'm getting an error, printf not having enough arguments. I need to
> > find where this is happening, and I understand there are ways of
> > getting a stack trace, but apparently I need to compile for profiling.
> > That means I need to compile my one library dependency
> > (Text.XML.Light) for profiling, I believe. How do I do this? I'm on
> > Windows and have only installed libraries in the past with cabal.
>
> How many calls to `printf` do you actually have?
>
> Wouldn't a search for all calls and a quick inspection of them be good
> enough?
>
> /M
>
> --
> Magnus Therning                      OpenPGP: 0xAB4DFBA4
> email: magnus at therning.org   jabber: magnus at therning.org
> twitter: magthe               http://therning.org/magnus
>
> If our ideas of intellectual property are wrong, we must change them,
> improve them and return them to their original purpose. When
> intellectual property rules diminish the supply of new ideas, they
> steal from all of us.
>      -- Andrew Brown, November 19, 2005, The Guardian
>
> _______________________________________________
> Beginners mailing list
> Beginners at haskell.org
> http://mail.haskell.org/cgi-bin/mailman/listinfo/beginners
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.haskell.org/pipermail/beginners/attachments/20151205/448b1646/attachment.html>