ext/stackprof/stackprof.c in stackprof-0.2.18 vs ext/stackprof/stackprof.c in stackprof-0.2.19

@@ -613,11 +613,11 @@
     int num;
     if (_stackprof.raw) {
 	struct timestamp_t t;
 	capture_timestamp(&t);
 	start_timestamp = timestamp_usec(&t);
-	timestamp_delta = delta_usec(&t, &_stackprof.last_sample_at);
+	timestamp_delta = delta_usec(&_stackprof.last_sample_at, &t);
     }
 
     num = rb_profile_frames(0, sizeof(_stackprof.frames_buffer) / sizeof(VALUE), _stackprof.frames_buffer, _stackprof.lines_buffer);
 
     _stackprof.buffer_count = num;
@@ -636,10 +636,10 @@
 	capture_timestamp(&t);
 	start_timestamp = timestamp_usec(&t);
 
 	// We don't know when the GC samples were actually marked, so let's
 	// assume that they were marked at a perfectly regular interval.
-	delta_to_first_unrecorded_gc_sample = delta_usec(&t, &_stackprof.last_sample_at) - (_stackprof.unrecorded_gc_samples - 1) * NUM2LONG(_stackprof.interval);
+	delta_to_first_unrecorded_gc_sample = delta_usec(&_stackprof.last_sample_at, &t) - (_stackprof.unrecorded_gc_samples - 1) * NUM2LONG(_stackprof.interval);
 	if (delta_to_first_unrecorded_gc_sample < 0) {
 	    delta_to_first_unrecorded_gc_sample = 0;
 	}
     }