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.

1 files changed, 3 insertions, 0 deletions

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