Re: [cdt-dev] duplicate breakpoints with cdi, cdt 7.0.0 on windows

[Siva Velusamy <siva.velusamy@xxxxxxxxx>]

More info:

I notice that when I first set the breakpoint, a CLineBreakpoint is
created. The stacktrace looks like this:

-------
CLineBreakpoint(resource="L/hello_world_0/src/helloworld.c",
attributes=a map, add=true)
CDIDebugModel.createLineBreakpoint
....
-------

Once this completes, it looks like it sets this breakpoint on the
target, which causes a MIBreakpointCreatedEvent. As part of responding
to this event, another CLineBreakpoint is created. The stacktrace now
looks like this:

--------
CLineBreakpoint(resource="P/hello_world_0",
                         attributes=a map one of whose attributes is a
sourceHandle which points to
/full/path/to/hello_world_0/src/helloworld.c",
                         add=true)
CDIDebugModel.createBreakpoint
..
CBreakpointManager.handleBreakpointCreatedEvent
--------

So it looks like the difference is that the first one is a breakpoint
on the file itself, while in reaction to the MI event, a breakpoint is
created on the project, with the attribute being the file. The code
seems to rely on the fact that these two should be identical (which
they are not), so resulting in duplicates.

Any thoughts on what the correct behavior should be for these methods?

Thanks,
Siva

On Wed, Dec 15, 2010 at 12:06 PM, Siva Velusamy <siva.velusamy@xxxxxxxxx> wrote:
> I'm seeing breakpoints listed twice in the breakpoints view.
>
> - When debugging is active, and you double click on a line, two
> breakpoints are shown in the breakpoints view. However, only one
> "break-insert" command is actually sent via MI to gdb.
> - When you delete one of them, a "break-delete" command is sent. The
> breakpoint is deleted from gdb, and the marker on the line goes away,
> but the duplicate breakpoint remains in the breakpoints view.
> - If you set a breakpoint before launching debug, then only one
> breakpoint is added to the view. However, once you start debugging, a
> duplicate of the same now shows up in the breakpoints view.
>
> All these issues are present only on Windows with a MingW based
> toolchain. No issues on Linux. We are using CDI.
>
> Software versions: Eclipse Helios + CDT 7.0.0
>
> I'd appreciate it if anyone has any thoughts on which files to look at
> in the source code.
>
> Thanks,
> Siva
>