Different behavior for different jdk versions

[MartinWitt]

During the pr #3200 i found this "interesting" behavior.
` @test
public void showBug() {
Launcher spoon = new Launcher();
spoon.addInputResource("src/test/resources/deprecated/input");
CtModel model = spoon.buildModel();
Collection<CtExecutable<?>> list = new HashSet<>();

	model.getElements(new TypeFilter<>(CtInvocation.class))
	.forEach(v -> list.add(v.getExecutable().getExecutableDeclaration()));
	list.removeIf(v -> Objects.isNull(v));
	//Filter methods that are not in the code
	list.removeIf(v -> !v.getPosition().isValidPosition());
	//in jdk 8 size 3
	//in jdk 11 size 4

	/* jdk8 List
	[// should be deleted because only ref in Foo.test3()
	@java.lang.Deprecated
	public void test3() {
	  test3();
	}, // ref in Foo.test1()
	@java.lang.Deprecated
	public boolean test2() {
	  return true;
	}, // ref in Bar.test
	@java.lang.Deprecated
	public void test5() {
	}]
	*/
	/*jdk11 List
	[// should be deleted because only ref in Foo.test3()
	@java.lang.Deprecated
	public void test3() {
	    test3();
	}, // ref in Bar.foo()
	@java.lang.Deprecated
	public void test4() {
	}, // ref in Foo.test1()
	@java.lang.Deprecated
	public boolean test2() {
	    return true;
	}, // ref in Bar.test
	@java.lang.Deprecated
	 */
	assertEquals(4, list.size());
}` 

Maybe somebody wants to debug this issue. If not it's here if somebody finds this behavior during their work and knows that this is an open problem.

[monperrus]

Thanks a lot for documenting this.

This is not the first time we see behavioral differences across Java versions:

• We have tests with looser assertions to handle that (search for JDK/jdk in the test folder)
• We even have an if in the app code to check for the Java version, see https://github.com/INRIA/spoon/blob/master/src/main/java/spoon/reflect/visitor/chain/CtQueryImpl.java#L593