Watchpoints with condition

[Jim Blandy]

Eli Zaretskii <eliz at gnu.org> writes:
>> From: Vladimir Prus <vladimir@codesourcery.com>
>> Date: Fri, 30 Nov 2007 19:25:19 +0300
>> 
>> 
>> GDB presently allow a watchpoint to have a condition, and I wonder
>> what are the use-cases for that.
>> 
>> If anybody has used watchpoint in condition in practice when debugging
>> real problem (as opposed to just playing with gdb, or making up
>> possible uses), can he share why it was needed?
>
> I use it quite a lot.  The simplest use case is like this:
>
>   (gdb) watch foo if foo == 1

Isn't that equivalent to 'watch foo == 1'?