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3) gc pointers can point to middle of objects and arrays.

I don't really understand how this works. Would the middle of an object/array get collected separately from the rest of it? That seems ridiculous, so I'm confused.

hi, I think the following if what was ment: base of array 'x' | v [ 0 ][ 1 ][ 2 ][ 3 ][ 4 ] // an array of 5 elements ^ | pointer to 4-th element (ptr) {c++} gc_free(ptr); remove the entier object 'x' from memory so you don't have to make sure you have a base pointer to 'x' to delete 'x'. This comes handly for example when: {c++[ char* x = (char*)gc_malloc(5); char* end = x + 5; set_zero(x, 5); while(x != end && *x != 0) { // error, x should have been al zero gc_free(x); // note x doesn't point to base // of the allocated memory anymore! } ]} With Best Regards -- Kasra