A limited patent grant from Nokia

A limited patent grant from Nokia

> In fact, Red Hat seems worried enough about this patent that they do not
> distribute valgrind, which might be considered as infringing,

I don't see how Valgrind can infringe Purify. Purify is a link-time tool that modifies the object code emitted by the linker by adding instructions to perform memory analysis. Valgrind has always been a run-time tool and (at least the 2.x versions) doesn't instrument the code: as far as I understand it Valgrind implements a virtual machine to run the user's code as-is, with no instrumentation, where the memory analysis is done in the VM.

If someone is claiming that violates Purify patents that has got to be one BROAD patent grant!!