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 1fd7e28..b3bb6b5 100644 (file)
--- 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 feda54d..9ceb19a 100644 (file)
--- 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 52d5018..3589387 100644 (file)
--- 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 dda24cc..fefefd9 100644 (file)
--- 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);
     }
 }