Multiple breakpoint locations

[Eli Zaretskii]

> From:  Vladimir Prus <ghost@cs.msu.su>
> Date:  Tue, 13 Nov 2007 22:28:15 +0300
> 
> >   (gdb) d 1.1
> >   warning: bad breakpoint number at or near '1.1'
> 
> Well, you can't really delete a location -- if breakpoint expression
> corresponds to 20 addresses, that's the way it is -- you cannot delete
> some of those addresses from the program ;-)

Sorry, I don't understand why; can you please elaborate?  Removing a
breakpoint instruction from a specific address is a primitive
operation of the target back-end; why can't we use it for that single
address?