GC_STORE_BACK_PTR 1818 gc/include/private/gc_priv.h #  define GC_STORE_BACK_PTR(source, dest) GC_store_back_pointer(source, dest)
GC_STORE_BACK_PTR 1821 gc/include/private/gc_priv.h #  define GC_STORE_BACK_PTR(source, dest)