[Imgcif-l] Debugging CBFlib fatal error 4 Invalid function argument

[Herbert J. Bernstein]

Dear Graeme,

   First, please feel free to send me the code to look at.

   Second, what I do when I am tracing such problems in convert_image
is to compile with the -g switch (and often with -O0 when optimizer
make the debugger crazy), and then set a break point in local_exit.
That then tells me where the error was reported.  Then I drop the
breakpoint back to that line and work forward until I get the
call that actually tripped the error.

   Error 4 is unusual in convert_image.  You may wish to run make tests
first to be sure you have a clean kit in which convert_image works
correctly on the standard test cases.

As I said, feel free to send me a URL for the files and whatever code
you are using, and I'll be happy to take a look.

Regards,
   Herbert
=====================================================
  Herbert J. Bernstein, Professor of Computer Science
    Dowling College, Kramer Science Center, KSC 121
         Idle Hour Blvd, Oakdale, NY, 11769

                  +1-631-244-3035
                  yaya at dowling.edu
=====================================================

On Mon, 16 Nov 2009, Graeme.Winter at Diamond.ac.uk wrote:

> Hi Folks,
>
> Is there a neat way to debug the above error? I am trying to fix a
> template for convert_image and have got stuck... At the moment I am
> trying debugging by random changes to see if I can identify the
> offending data block.
>
> Thanks,
>
> Graeme
>
> Graeme Winter
> Software and MX Support Scientist
> Diamond Light Source
>
> +44 1235 778091 (work)
> +44 7786 662784 (work mobile)
>
>
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