rb_tracearg_lineno   78 ext/objspace/object_tracing.c     VALUE line = rb_tracearg_lineno(tparg);
rb_tracearg_lineno   75 include/ruby/debug.h VALUE rb_tracearg_lineno(rb_trace_arg_t *trace_arg);
rb_tracearg_lineno  896 vm_trace.c         return rb_tracearg_lineno(get_trace_arg());
rb_tracearg_lineno 1324 vm_trace.c     				  FIX2INT(rb_tracearg_lineno(trace_arg)),
rb_tracearg_lineno 1335 vm_trace.c     			      FIX2INT(rb_tracearg_lineno(trace_arg)));
rb_tracearg_lineno 1346 vm_trace.c     			      FIX2INT(rb_tracearg_lineno(trace_arg)));