A Garbage Collector for C and C++

http://www.hpl.hp.com/personal/Hans_Boehm/gc/

[GPS]: I've been impressed by how well it works.  I think that it might be interesting to build a Tcl-prototype that use the Boehm-GC for Tcl_Obj management.  It could possibly eliminate thousands of lines of code and improve the quality of Tcl/Tk.

There was an excellent article in [C/C++ Users Journal] about the Boehm-GC.