From: Dmitry Antipov <dmantipov@yandex.ru>
To: Eli Zaretskii <eliz@gnu.org>
Cc: Emacs development discussions <emacs-devel@gnu.org>
Subject: One more warning about using an uninitialized field
Date: Thu, 23 Jan 2014 13:08:18 +0400 [thread overview]
Message-ID: <52E0DC02.3090203@yandex.ru> (raw)
One more warning about using an uninitialized field, now BIDI-related:
==11279== Conditional jump or move depends on uninitialised value(s)
==11279== at 0x443145: compute_display_string_pos (xdisp.c:3582)
==11279== by 0x500D93: bidi_fetch_char (bidi.c:953)
==11279== by 0x501FF9: bidi_paragraph_init (bidi.c:1299)
==11279== by 0x47AEAE: Fcurrent_bidi_paragraph_direction (xdisp.c:20419)
From xdisp.c:
3579 if (charpos >= eob
3580 /* We don't support display properties whose values are strings
3581 that have display string properties. */
! 3582 || string->from_disp_str
3583 /* C strings cannot have display properties. */
3584 || (string->s && !STRINGP (object)))
3585 {
3586 *disp_prop = 0;
3587 return eob;
3588 }
I don't know how critical it may be, but please consider the following precaution:
=== modified file 'src/xdisp.c'
--- src/xdisp.c 2014-01-13 11:30:30 +0000
+++ src/xdisp.c 2014-01-23 08:53:41 +0000
@@ -6409,6 +6409,7 @@
it->bidi_it.string.s = NULL;
it->bidi_it.string.lstring = Qnil;
it->bidi_it.string.bufpos = 0;
+ it->bidi_it.string.from_disp_str = 0;
it->bidi_it.string.unibyte = 0;
it->bidi_it.w = it->w;
}
@@ -20411,6 +20412,7 @@
itb.string.s = NULL;
itb.string.lstring = Qnil;
itb.string.bufpos = 0;
+ itb.string.from_disp_str = 0;
itb.string.unibyte = 0;
/* We have no window to use here for ignoring window-specific
overlays. Using NULL for window pointer will cause
Dmitry
next reply other threads:[~2014-01-23 9:08 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-23 9:08 Dmitry Antipov [this message]
2014-01-23 16:20 ` One more warning about using an uninitialized field Eli Zaretskii
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