2011-08-09 Pedro Alves <pedro@codesourcery.com>

2011-08-09  Pedro Alves  <pedro@codesourcery.com>

	gdb/
	* printcmd.c (current_display_number): Update comment.
	(disable_current_display_cleanup): Delete.
	(do_one_display): Use make_cleanup_restore_integer.  Gracefully
	catch errors thrown while evaluating and printing the display.

	gdb/testsuite/
	* gdb.base/display.c (do_loops): New `p_i' local.
	* gdb.base/display.exp: Test displaying a variable that is
	temporarily at a bad address.