backtrace_eval_unrewind 4056 src/eval.c       backtrace_eval_unrewind (distance);
backtrace_eval_unrewind 4057 src/eval.c       record_unwind_protect_int (backtrace_eval_unrewind, -distance);
backtrace_eval_unrewind 4091 src/eval.c       backtrace_eval_unrewind (distance);
backtrace_eval_unrewind 4129 src/eval.c       backtrace_eval_unrewind (-distance);