Re: Printing to STDERR when %d is "Cannot access memory ..."

[Keith David Bershatsky]

Thank you, Davis, for teaching me how to deal with a NULL pointer when printing 
to STDERR.  Your code works well.  Greatly appreciated!

Keith

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DATE:  [06-13-2018 11:50:13] <13 Jun 2018 12:50:13 -0600>
FROM:  Davis Herring <address@hidden>
> 
> > fprintf (stderr, "(%d)", (font->space_width == NULL
> >                            ? 0
> >                            : font->space_width);
> >
> > However, that didn't fix the problem.
> 
> You meant
> 
>    fprintf (stderr, "(%d)", font == NULL ? 0 :
>                             font->space_width);
> 
> It's font that could be null, not its space_width.
> 
> Davis
> 
> PS - This says nothing about why font is null -- it might be a bug, or
> it might just be a bug that this code uses it without checking.
> 
> --
> This product is sold by volume, not by mass.  If it appears too dense or
> too sparse, it is because mass-energy conversion has occurred during
> shipping.