> > I'm not sure I understand why you would hide a pointer from the GC. As already suggested by Kapps, for weak references. I need that for my new std.signals implementation. > > > Are there memory models in use > > where the inverted pointer value might also be in GC memory? > > > > Yes, that can happen in 32-bit. > Yeah, you are right if all pointer bits are actually used it is far too easy. On the other hand especially because less space is wasted for pointers on 32 bit, I can easily afford an extra variable to solve this problem (kind of). Buah, I am starting to like 64 bit architectures ;-)
Thanks!
