From: Carlos Pita <carlosjosepita@gmail.com>
To: Eli Zaretskii <eliz@gnu.org>
Cc: 37756@debbugs.gnu.org
Subject: bug#37756: [PATCH] Wrong initialization of fringe bitmap
Date: Tue, 15 Oct 2019 07:14:25 -0300 [thread overview]
Message-ID: <CAELgYhccqv4SJhayZT=jedXsvD8rKDjruJ-xRojARZjFrR5kEQ@mail.gmail.com> (raw)
In-Reply-To: <838spmgx1t.fsf@gnu.org>
> Can you explain your reasoning? The loop after that does initialize
Ok, TBH I hadn't looked at the loop. But anyway:
> > xfb = xmalloc (sizeof fb + fb.height * BYTES_PER_BITMAP_ROW);
This allocates fb.height * BYTES_PER_BITMAP_ROW for bits = b.
> > memset (b, 0, fb.height);
This only initializes fb.height bytes to zero.
And then the loop indeed initializes all fb.height *
BYTES_PER_BITMAP_ROW bytes (b being an unsigned short pointer):
j = 0;
while (j < fb.height)
{
...
b[j++] = something;
...
}
So instead of memset (b, 0, fb.height) being incomplete I would now
say that it is redundant and misleading.
next prev parent reply other threads:[~2019-10-15 10:14 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-15 2:39 bug#37756: [PATCH] Wrong initialization of fringe bitmap Carlos Pita
2019-10-15 9:47 ` Eli Zaretskii
2019-10-15 10:14 ` Carlos Pita [this message]
2019-10-16 17:28 ` Carlos Pita
2019-10-16 18:35 ` Eli Zaretskii
2019-10-16 18:54 ` Carlos Pita
2019-10-16 19:05 ` Eli Zaretskii
2019-10-16 20:01 ` Carlos Pita
2019-10-17 11:53 ` Alan Third
2019-10-17 15:01 ` Robert Pluim
2019-10-26 10:21 ` Eli Zaretskii
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