From: YAMAMOTO Mitsuharu <mituharu@math.s.chiba-u.ac.jp>
To: Andreas Schwab <schwab@linux-m68k.org>
Cc: 11082@debbugs.gnu.org
Subject: bug#11082: 24.0.94; u.glyphless member in struct glyph does not fit in 32 bits
Date: Sun, 25 Mar 2012 09:29:25 +0900 [thread overview]
Message-ID: <wlaa35bk0q.wl%mituharu@math.s.chiba-u.ac.jp> (raw)
In-Reply-To: <m27gyaqszy.fsf@linux-m68k.org>
>>>>> On Sat, 24 Mar 2012 09:54:09 +0100, Andreas Schwab <schwab@linux-m68k.org> said:
>> ?? Isn't the size of a union defined by its widest member?
> The size of u.val is defined by the size of unsigned.
>> If so, we just end up wasting some storage here, but we should
>> never truncate a bit field.
> It's not about truncation, but about ignored bits in GLYPH_EQUAL_P.
Yes, I meant that.
A test case is as follows. I checked it with Ubuntu 11.10, GTK+
build.
1. emacs -Q
2. (insert #xe0100) C-j
3. C-p C-p C-e C-b C-b C-d 1 C-e
Now the line at the cursor is "(insert #xe0101)".
4. C-j
The glyphless glyph just added is shown as "0E0100" instead of
"0E0101".
YAMAMOTO Mitsuharu
mituharu@math.s.chiba-u.ac.jp
next prev parent reply other threads:[~2012-03-25 0:29 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-24 5:23 bug#11082: 24.0.94; u.glyphless member in struct glyph does not fit in 32 bits YAMAMOTO Mitsuharu
2012-03-24 7:01 ` Eli Zaretskii
2012-03-24 8:54 ` Andreas Schwab
2012-03-25 0:29 ` YAMAMOTO Mitsuharu [this message]
2012-03-26 5:47 ` Kenichi Handa
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