From: Sylvain Joyeux Date: 2007-06-04T03:31:46+09:00 Subject: Re: $2000 USD Reward for help fixing Segmentation Fault in GC > Valgrind is a really nice and really good tool, but not > useful for tracking down bugs in a (conservative) collector. It depends on the bug. The most likely bug you'll get because of GC is either that it freed something that was used by a C extension, or that it tries to free two times the same slot. In both case, valgrind will give something useful. You're right, however, for other cases of GC-related bugs. As I said, Brent will have to generate a suppression file to get something useful. Otherwise, the real bugs will be lost inside a lot of warnings that are generated because of "normal" GC operations. Best regards. -- Sylvain