RFA: implement ambiguous linespec proposal

[Yao Qi]

On 11/17/2011 12:44 AM, Tom Tromey wrote:
> Yao> I'll debug this problem tomorrow, but if you have any clues, that will
> Yao> be helpful.
> 
> Tom> What is mysterious is that I do not see this failure.
> Tom> I actually think this test should fail, because it is applying a
> Tom> condition in a scope where there is no variable 'a'.
> 
> Tom> I will debug it today.
> 
> Ok, I found the problem.  "a" is defined in a system library for which I
> have debuginfo installed:
> 
>     (top-gdb) p *sym.symtab

OOC, could you give me a stack backtrace here?

>     $22 = {
>     [...]
>       filename = 0x26ba950 "../sysdeps/ieee754/dbl-64/atnat.h", 
>       dirname = 0x26c4f10 "/usr/src/debug/glibc-2.14-34-ge2a3090/math", 
> 
> So the condition erroneously parses.
> 

That is great!

> Changing the names to "a_param" instead makes it fail again.
> 
> I think the test is bogus, though, so I changed it in a way that will
> make it succeed.
> 

Agreed.

> I can send a new revision of everything if you want.

No, I don't.

-- 
Yao (齐尧)