Re: Watchpoints with condition

Jim Blandy
2007-11-30T23:30:36Z

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'?