I do not get a crash and hence don't have a core file. I greped for this error "attempt to create string with null pointer" and found that it is coming from libstdc++.so.5.

- Dwarak

On 12/6/05, John Levon <levon@movementarian.org> wrote:
On Tue, Dec 06, 2005 at 05:53:38PM -0600, Dwarakanath Rajagopal wrote:

> I'm using version 0.9.1 on 2.6.12 kernel on a AMD64 machine.
>
> I'm oprofiling a large c++ application.After profiling, when I run
> opannotate, I get the following error,
>
> opannotate -assembly <executable path>
> opannotate error: attempt to create string with null pointer

Do you have a core file?

john