mark_stack 612 gc/mark.c mse * GC_mark_from(mark_stack_top, mark_stack, mark_stack_limit) mark_stack 614 gc/mark.c mse * mark_stack; mark_stack 632 gc/mark.c while (mark_stack_top >= mark_stack && credit >= 0) { mark_stack 634 gc/mark.c while ((((ptr_t)mark_stack_top - (ptr_t)mark_stack) | credit)