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Re: Redisplay issue
From: |
Eli Zaretskii |
Subject: |
Re: Redisplay issue |
Date: |
Wed, 02 Dec 2015 15:57:06 +0200 |
> Date: Tue, 1 Dec 2015 20:35:43 -0800
> From: Yuan MEI <address@hidden>
> Cc: emacs-devel <address@hidden>
>
> > I have only one more idea: can you build Emacs without Cairo? Cairo
> > changes the way Emacs draws the screen in significant ways, and that
> > is the only part of this puzzle that we didn't verify yet. The traces
> > indicate that everything up to the point where we invoke the drawing
> > code is identical between the "good" and the "bad" cases, and
> > correctly instructs the display back-end to redraw every screen line
> > in the exposed region(s).
>
> Very interesting. The partial redraw problem seems to be gone when
> cairo is disabled. I couldn't reproduce the bad case any more.
> However I encountered another bug when cairo is disabled: did C-h h to
> bring up HELLO, and Emacs crashed:
>
> lisp.h:1543: Emacs fatal error: assertion failed: 0 <= size
> Fatal error 6: Aborted
> lisp.h:1543: Emacs fatal error: assertion failed: 0 <= size
> Aborted
When did you last update from the repository? I believe this bug was
solved a week ago, in commit d5fdffecdfad305d9c933ae3cad75a5e4e73878c.
If your sources include the changes in that commit, please show a GDB
backtrace when Emacs aborts.
A stub in the dark: does the change below fix the Cairo build, per
chance?
diff --git a/src/xdisp.c b/src/xdisp.c
index d1a10ca..7221032 100644
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -30268,6 +30268,7 @@ expose_area (struct window *w, struct glyph_row *row,
XRectangle *r,
struct glyph *last;
int first_x, start_x, x;
+ block_input ();
if (area == TEXT_AREA && row->fill_line_p)
/* If row extends face to end of line write the whole line. */
draw_glyphs (w, 0, row, area,
@@ -30310,6 +30311,7 @@ expose_area (struct window *w, struct glyph_row *row,
XRectangle *r,
first - row->glyphs[area], last - row->glyphs[area],
DRAW_NORMAL_TEXT, 0);
}
+ unblock_input ();
}
- Re: Redisplay issue, Eli Zaretskii, 2015/12/01
- Re: Redisplay issue, Yuan MEI, 2015/12/01
- Re: Redisplay issue,
Eli Zaretskii <=
- Re: Redisplay issue, Yuan MEI, 2015/12/02
- Re: Redisplay issue, Eli Zaretskii, 2015/12/03
- Re: Redisplay issue, Yuan MEI, 2015/12/03
- Re: Redisplay issue, Eli Zaretskii, 2015/12/03
- Re: Redisplay issue, martin rudalics, 2015/12/03
- Re: Redisplay issue, Yuan MEI, 2015/12/03
- Re: Redisplay issue, martin rudalics, 2015/12/04
- Re: Redisplay issue, Yuan MEI, 2015/12/04
- Re: Redisplay issue, martin rudalics, 2015/12/04
- Re: Redisplay issue, Yuan MEI, 2015/12/04