Ian> In Tom's interesting idea, we would write the mark function by hand for Ian> each C++ type that we use GTY with.
I think we should be clear that the need to write a mark function for a new type is a drawback of this approach. Perhaps gengtype could still write the functions for ordinary types in GCC, just not (templatized) containers. Also, perhaps we actually need 2 such functions, one for the GC and one for PCH. I don't remember. Tom
