_descr 157 gc/include/private/gc_pmark.h register word _descr = (hhdr) -> hb_descr; \ _descr 159 gc/include/private/gc_pmark.h if (_descr == 0) { \ _descr 168 gc/include/private/gc_pmark.h mark_stack_top -> mse_descr = _descr; \