[debbugs-tracker] bug#9947: closed (valgrind warning: Conditional jump or move depends on uninitialised value(s) in note_mouse_highlight)

[GNU bug Tracking System]

Your message dated Fri, 04 Nov 2011 00:12:41 +0200
with message-id <address@hidden>
and subject line Re: bug#9947: valgrind warning: Conditional jump or move 
depends on    uninitialised value(s) in note_mouse_highlight
has caused the debbugs.gnu.org bug report #9947,
regarding valgrind warning: Conditional jump or move depends on uninitialised 
value(s) in note_mouse_highlight
to be marked as done.

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-- 
9947: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=9947
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> --- Begin Message ---
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> Subject: 
>
> valgrind warning: Conditional jump or move depends on uninitialised	value(s) in note_mouse_highlight
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> Date: 
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> Thu, 03 Nov 2011 17:41:27 -0400
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> User-agent: 
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> Gnus/5.13 (Gnus v5.13) Emacs/23.3 (gnu/linux)
>
>
>
>
> valgrind ./temacs -Q
>
> gives this warning:
>
> ==7776== Conditional jump or move depends on uninitialised value(s)
> ==7776==    at 0x4738C5: note_mouse_highlight (xdisp.c:26977)
> ==7776==    by 0x4F8682: note_mouse_movement (xterm.c:3833)
> ==7776==    by 0x4FCBB1: handle_one_xevent (xterm.c:6667)
> ==7776==    by 0x4FD815: XTread_socket (xterm.c:7148)
> ==7776==    by 0x5438DB: read_avail_input (keyboard.c:6821)
> ==7776==    by 0x544183: handle_async_input (keyboard.c:7149)
> ==7776==    by 0x5441A2: process_pending_signals (keyboard.c:7165)
> ==7776==    by 0x5AACF5: re_match_2_internal (regex.c:5888)
> ==7776==    by 0x5A6780: re_search_2 (regex.c:4481)
> ==7776==    by 0x5A57C5: re_search (regex.c:4262)
> ==7776==    by 0x59260A: fast_string_match (search.c:482)
> ==7776==    by 0x578870: Ffind_file_name_handler (fileio.c:286)
> ==7776== 
>
> This is legitimate, the code is looking at the value of "area" inside a 
> conditional:
>
>       if (glyph == NULL
> [snip]
>
> "area" is computed by this code:
>       /* Find the glyph under X/Y.  */
>       glyph = x_y_to_hpos_vpos (w, x, y, &hpos, &vpos, &dx, &dy, &area);
>
> but "area" is not set when `x_y_to_hpos_vpos' return NULL.
>
>
>
>
>
> --- End Message ---
> --- Begin Message ---
>
>
>
> Subject: 
>
> Re: bug#9947: valgrind warning: Conditional jump or move depends	on	uninitialised value(s) in note_mouse_highlight
>
>
>
>
> Date: 
>
> Fri, 04 Nov 2011 00:12:41 +0200
>
>
>
>
> > From: Dan Nicolaescu <address@hidden>
> > Date: Thu, 03 Nov 2011 17:41:27 -0400
> > 
> > 
> > valgrind ./temacs -Q
> > 
> > gives this warning:
> > 
> > ==7776== Conditional jump or move depends on uninitialised value(s)
> > ==7776==    at 0x4738C5: note_mouse_highlight (xdisp.c:26977)
> > ==7776==    by 0x4F8682: note_mouse_movement (xterm.c:3833)
> > ==7776==    by 0x4FCBB1: handle_one_xevent (xterm.c:6667)
> > ==7776==    by 0x4FD815: XTread_socket (xterm.c:7148)
> > ==7776==    by 0x5438DB: read_avail_input (keyboard.c:6821)
> > ==7776==    by 0x544183: handle_async_input (keyboard.c:7149)
> > ==7776==    by 0x5441A2: process_pending_signals (keyboard.c:7165)
> > ==7776==    by 0x5AACF5: re_match_2_internal (regex.c:5888)
> > ==7776==    by 0x5A6780: re_search_2 (regex.c:4481)
> > ==7776==    by 0x5A57C5: re_search (regex.c:4262)
> > ==7776==    by 0x59260A: fast_string_match (search.c:482)
> > ==7776==    by 0x578870: Ffind_file_name_handler (fileio.c:286)
> > ==7776== 
> > 
> > This is legitimate, the code is looking at the value of "area" inside a 
> > conditional:
> > 
> >       if (glyph == NULL
> > [snip]
> > 
> > "area" is computed by this code:
> >       /* Find the glyph under X/Y.  */
> >       glyph = x_y_to_hpos_vpos (w, x, y, &hpos, &vpos, &dx, &dy, &area);
> > 
> > but "area" is not set when `x_y_to_hpos_vpos' return NULL.
>
> Thanks, fixed.
>
>
> --- End Message ---