[syslinux] Menu system bug - MENU DEFAULT not working

[Matt Fleming]

On Tue, 2012-10-09 at 19:25 +0200, Tomas M wrote:
> Thank you very much, it is really an improvement!
> It is much better now. Yet still not perfect.
> 
> Attached is sample menu. It may look too complex, but I believe the
> menu is very correct, it is auto-generated by a tool, not manually
> written down, so it should be error-free (unless the tool which
> generates it is broken)

OK, I can reproduce this problem without the patch I sent you, so at
least we know it didn't introduce the problem :-)

> It seems that the menu works on the first impression, but if you keep
> checking and unchecking the options for a while, you will see that the
> 'cursor' starts to jump to wrong positions sometime.

Yeah, I see that. I'm slightly sceptical that this is a bug in the menu
code, given that the config file is so complex. Do you have a flow
diagram of the state machine for this config file?

The thing that makes me suspicious is that there are multiple submenu
entries that have,

	MENU DEFAULT
	MENU LABEL [*] Copy to RAM
	MENU GOTO xxx

Where xxx is a *different* menu. I count 4. Are you able to reproduce
the problem with a simpler config file?

-- 
Matt Fleming, Intel Open Source Technology Center