JDK does not allow debuggers to stop where expected when extra stepping
filter "jdk.internal.*" is used.

Consider the following test case:

1 package my.stepping;
2
3 import java.util.ArrayList;
4 import java.util.HashMap;
5 import java.util.List;
6 import java.util.Map;
7
8 public class StepIntoMethodRef {
9 public static void actualMethod(long[] input, long min, long max) {
10 Map<Long, List<Long>> lookup = new HashMap<>();
11 long range = max - min + 1;
12 for (long number : input) {
13 lookup.compute(number / range, (key, list) -> list != null?
list : new ArrayList<>()).add(number);
14 }
15 }
16 interface Func {
17 void call(long[] input, long min, long max);
18 }
19 public static void main(String[] args) {
20 Func methodRef = StepIntoMethodRef::actualMethod;
21 methodRef.call(new long[] {1, 2, 3, 4, 5, 6}, 1, 6); // breakpoint
on this, step into
22 }
23 }

With a class filter in place that excludes java.*,sun.*,jdk.internal.*
and setting a break point on line 21, we expect to step into line 10, but
instead, debugger steps into line 13.

Step completed: "thread=main",
my.stepping.StepIntoMethodRef.lambda$actualMethod$0(), line=13 bci=1