From: Eli Zaretskii <eliz@gnu.org>
Date: Fri, 6 Aug 2010 14:54:06 +0000 (+0300)
Subject: Fix redisplay bugs due to uninitialized glyphs in frame glyph pool.
X-Git-Tag: emacs-pretest-24.0.90~104^2~275^2~438^2~49^2~41^2
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=cb4545adef5f73617ed0ae1399a7507d12c6353e;p=emacs.git

Fix redisplay bugs due to uninitialized glyphs in frame glyph pool.

 dispnew.c (realloc_glyph_pool): Zero out newly allocated glyphs.
 msdos.c (IT_display_cursor): Log cursor position on termscript.
 .gdbinit (pgx): Display the avoid_cursor_p flag.
---

diff --git a/src/.gdbinit b/src/.gdbinit
index 1fd7e288736..b3bb6b58267 100644
--- a/src/.gdbinit
+++ b/src/.gdbinit
@@ -535,6 +535,9 @@ define pgx
   if ($g->overlaps_vertically_p)
     printf " OVL"
   end
+  if ($g->avoid_cursor_p)
+    printf " AVOID"
+  end
   if ($g->left_box_line_p)
     printf " ["
   end
diff --git a/src/ChangeLog b/src/ChangeLog
index feda54defd8..9ceb19ad486 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,3 +1,11 @@
+2010-08-06  Eli Zaretskii  <eliz@gnu.org>
+
+	* dispnew.c (realloc_glyph_pool): Zero out newly allocated glyphs.
+
+	* msdos.c (IT_display_cursor): Log cursor position on termscript.
+
+	* .gdbinit (pgx): Display the avoid_cursor_p flag.
+
 2010-08-06  Dan Nicolaescu  <dann@ics.uci.edu>
 
 	* process.c: Remove HAVE_SOCKETS #ifdefs inside #ifdef
diff --git a/src/dispnew.c b/src/dispnew.c
index 52d50186939..35893872c73 100644
--- a/src/dispnew.c
+++ b/src/dispnew.c
@@ -1528,7 +1528,11 @@ realloc_glyph_pool (struct glyph_pool *pool, struct dim matrix_dim)
       int size = needed * sizeof (struct glyph);
 
       if (pool->glyphs)
-	pool->glyphs = (struct glyph *) xrealloc (pool->glyphs, size);
+	{
+	  pool->glyphs = (struct glyph *) xrealloc (pool->glyphs, size);
+	  memset (pool->glyphs + pool->nglyphs, 0,
+		  size - pool->nglyphs * sizeof (struct glyph));
+	}
       else
 	{
 	  pool->glyphs = (struct glyph *) xmalloc (size);
diff --git a/src/msdos.c b/src/msdos.c
index dda24cc868f..fefefd9147c 100644
--- a/src/msdos.c
+++ b/src/msdos.c
@@ -1593,14 +1593,16 @@ IT_display_cursor (int on)
       ScreenSetCursor (current_pos_Y, current_pos_X);
       cursor_cleared = 0;
       if (tty->termscript)
-	fprintf (tty->termscript, "\nCURSOR ON");
+	fprintf (tty->termscript, "\nCURSOR ON (%dx%d)",
+		 current_pos_Y, current_pos_X);
     }
   else if (!on && !cursor_cleared)
     {
       ScreenSetCursor (-1, -1);
       cursor_cleared = 1;
       if (tty->termscript)
-	fprintf (tty->termscript, "\nCURSOR OFF");
+	fprintf (tty->termscript, "\nCURSOR OFF (%dx%d)",
+		 current_pos_Y, current_pos_X);
     }
 }