Re: [rfa:breakpoint] Correctly count watchpoints

[Eli Zaretskii <eliz@is.elta.co.il>]

On Sun, 29 Sep 2002, Andrew Cagney wrote:

> (per earlier post) An expression like:
> 
> 	a + b
> 
> requires two watchpoint resources (&a and &b).

What do you mean by ``watchpoint resources''?  On a i386, watching &a 
might require much more than a single debug register, depending on a's 
size and alignment.

> When first creating the 
> watchpoint, gdb correctly counts this as two.  However,  when GDB goes 
> back to compute the number of watchpoints already used, it does a 
> re-count and treats the above (and any watchpoint expression) as only one.
> 
> The attached, I belive, fixes this by saving the mem_cnt that was computed.

I agree that the count should at least be consistent.

> One thing I wonder about though, should ``info breakpoints'' or ``maint 
> info breakpoints'' display this info?

Only if it's useful.  Could you please make a concrete suggestion as to 
what should be printed about this information?

> Ok?

Fine with me.