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To be honest I was just kind of thinking "oh great another language implementation," before I read what you're actually doing and why you needed to create clasp. I appreciate the difficulty of writing precisely GC'd C/C++. It's pretty awesome that you were able to use clang to (I assume this is mainly what the analyzer does) track roots in C & C++ code.

Best of luck.

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Thanks - yes the analyzer tracks roots through about 300 C++ classes. It also finds global variables and builds C++ code to interface with the MPS library. I exposed the Clang libraries to search the AST and describe the AST in Common Lisp and then wrote the static analyzer in Lisp. I shudder at the thought of doing this all in C++ and I write a lot of complicated stuff like Common Lisp implementations in C++ :-). Common Lisp is the language of trees and pattern recognition. Common Lisp is the perfect tool for this job.

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