From: Keith David Bershatsky <esq@lawlist.com>
To: Davis Herring <herring@lanl.gov>
Cc: Eli Zaretskii <eliz@gnu.org>, emacs-devel@gnu.org
Subject: Re: Printing to STDERR when %d is "Cannot access memory ..."
Date: Wed, 13 Jun 2018 12:34:01 -0700 [thread overview]
Message-ID: <m2r2lalbva.wl%esq@lawlist.com> (raw)
Thank you, Davis, for teaching me how to deal with a NULL pointer when printing to STDERR. Your code works well. Greatly appreciated!
Keith
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
DATE: [06-13-2018 11:50:13] <13 Jun 2018 12:50:13 -0600>
FROM: Davis Herring <herring@lanl.gov>
>
> > 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.
next reply other threads:[~2018-06-13 19:34 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-13 19:34 Keith David Bershatsky [this message]
-- strict thread matches above, loose matches on Subject: below --
2018-06-13 21:37 Printing to STDERR when %d is "Cannot access memory ..." Keith David Bershatsky
2018-06-13 19:34 Keith David Bershatsky
2018-06-13 19:46 ` Eli Zaretskii
2018-06-13 18:37 Keith David Bershatsky
2018-06-13 18:50 ` Davis Herring
2018-06-13 19:11 ` Eli Zaretskii
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