From: Eli Zaretskii <eliz@gnu.org>
To: Keith David Bershatsky <esq@lawlist.com>
Cc: emacs-devel@gnu.org
Subject: Re: Debugging printing to stderr prior glyph row values ....
Date: Fri, 24 May 2019 09:45:44 +0300 [thread overview]
Message-ID: <83ftp45p0n.fsf@gnu.org> (raw)
In-Reply-To: <m2tvdku3af.wl%esq@lawlist.com> (message from Keith David Bershatsky on Thu, 23 May 2019 17:03:36 -0700)
> Date: Thu, 23 May 2019 17:03:36 -0700
> From: Keith David Bershatsky <esq@lawlist.com>
> Cc: emacs-devel@gnu.org
>
> I got it to crash ... again. "pgrowx previous_row" from gdb prints nothing and returns to a new gdb command prompt.
This means the previous glyph row had its 'used' member equal to zero.
> [CAVEAT: I wanted a crash, so I did not insert a test for the 'used' member being greater than zero.]
And it shows:
> (gdb) print *previous_row
> $3 = {
> glyphs = {0x11a800000, 0x11a800000, 0x11a803520, 0x11a803520},
> used = {0, 0, 0, 0},
See? all of the 'used' members are zero. IOW, there are no glyphs in
that row.
next prev parent reply other threads:[~2019-05-24 6:45 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-05-24 0:03 Debugging printing to stderr prior glyph row values Keith David Bershatsky
2019-05-24 6:45 ` Eli Zaretskii [this message]
-- strict thread matches above, loose matches on Subject: below --
2019-05-24 14:56 Keith David Bershatsky
2019-05-23 22:01 Keith David Bershatsky
2019-05-23 17:23 Keith David Bershatsky
2019-05-23 18:38 ` Eli Zaretskii
2019-05-23 4:14 Keith David Bershatsky
2019-05-23 14:43 ` Eli Zaretskii
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