Tools for automatically generating unit tests for C++?

Question

We have a large amount of legacy C++ code in shared libraries that are used on dozens of products. Ignoring the pros and cons of automatically generating tests (that's a discussion for another day), does anyone have any recommendations for a tool that would analyse the source and generate a set of tests to exercise that code?

Ideally it would be a Windows tool, Linux might be okay if absolutely necessary.

Answer 1

I've heard Parasoft mentioned a few times. I've never used their products, but the article "Change Software Without Fear" (written by one of their employees) covers automatic test generation ("behavioral regression testing," they call it) in a non-salesy fashion and touches briefly on their software.