trunc_sp 649 gc/os_dep.c ptr_t trunc_sp = (ptr_t)((word)sp & ~(GC_page_size - 1)); trunc_sp 650 gc/os_dep.c word size = GC_get_writable_length(trunc_sp, 0); trunc_sp 652 gc/os_dep.c return(trunc_sp + size);