Hi,

I got crash when I use tui.  The steps to reproduce is:
gdb gdb
b gdb_main
r
Ctrl-x A change to TUI mode.
Keep click <UP> some times.
Keep click <Down> some times.
Then you can get "---Type <return> to continue, or q <return> to quit---"
Click <return>.
Then the GDB crash.

I think this issue is this part should not output "---Type <return> to
continue, or q <return> to quit---".
So I make a patch to let tui doesn't output "file" just output "fullname".
Not sure is a good enough but this issue is fixed.

I suggest we fix this issue before next release because it will crash the GDB.

Thanks,
Hui

2013-03-09  Hui Zhu  <hui_zhu@mentor.com>

	* source.c (print_source_lines_base): Doesn't output "file".