Introduce FIR_IDENTICAL for FIR vs old frontend tests #KT-36879 Fixed

2020-03-04 17:54:33 +03:00
parent 186e0b0cba
commit 8884cbe415
2268 changed files with 1175 additions and 19754 deletions
@@ -1,49 +0,0 @@
-// JAVAC_EXPECTED_FILE
-// FILE: p/G.java
-
-package p;
-
-public interface G<TG> {
-}
-
-// FILE: p/A.kt
-
-package p;
-
-public interface A<TA> {
-    fun foo(p: A<TA>)
-}
-
-// FILE: p/B.java
-
-package p;
-
-public class B<TB> implements A<TB> {
-    void foo(A<TB> p) {}
-}
-
-// FILE: p/C.java
-
-package p;
-
-public class C<TC> extends B<TC> implements A<TC> {
-}
-
-// FILE: p/P.java
-
-package p;
-
-public class P {
-}
-
-// FILE: k.kt
-
-import p.*
-
-abstract class K: C<P>() {
-
-}
-
-abstract class AL: java.util.ArrayList<P>() {
-
-}
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // JAVAC_EXPECTED_FILE
 // FILE: p/G.java

@@ -1,30 +0,0 @@
-// FILE: p/A.java
-
-package p;
-
-public interface A {
-    <TA> void foo(TA p);
-}
-
-// FILE: p/B.java
-
-package p;
-
-public class B implements A {
-    <TB> void foo(TB p) {}
-}
-
-// FILE: p/C.java
-
-package p;
-
-public class C extends B implements A {
-}
-
-// FILE: k.kt
-
-import p.*
-
-abstract class K: C() {
-
-}
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // FILE: p/A.java

 package p;
@@ -1,16 +0,0 @@
-// FILE: Bar.java
-public class Bar implements Foo {
-public interface I extends Boo {
-}
-}
-
-// FILE: Baz.kt
-public interface Foo {
-    companion object {
-        public val EMPTY: Foo = object : Foo{}
-    }
-}
-
-interface Boo
-
-public class Baz : Bar.I
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // FILE: Bar.java
 public class Bar implements Foo {
 public interface I extends Boo {
@@ -1,18 +0,0 @@
-// FILE: K1.kt
-open class KFirst() {
-    fun foo() {
-    }
-}
-
-// FILE: J1.java
-public class J1 extends KFirst {
-    void baz() {}
-}
-
-// FILE: K2.kt
-class K2: J1() {
-    fun bar() {
-        foo()
-        baz()
-    }
-}
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // FILE: K1.kt
 open class KFirst() {
    fun foo() {
@@ -1,17 +0,0 @@
-// FILE: K1.kt
-open class KFirst<T: java.io.Serializable>() {
-    fun foo(t: T): T = t
-}
-
-// FILE: J1.java
-public class J1 extends KFirst<Integer> {
-    void baz() {}
-}
-
-// FILE: K2.kt
-class K2: J1() {
-    fun bar() {
-        foo(1)
-        baz()
-    }
-}
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // FILE: K1.kt
 open class KFirst<T: java.io.Serializable>() {
    fun foo(t: T): T = t
@@ -1,12 +0,0 @@
-// FILE: Aaa.java
-// http://youtrack.jetbrains.com/issue/KT-1694
-
-public abstract class Aaa {
-    public abstract void foo(String... args);
-}
-
-// FILE: bbb.kt
-
-class Bbb() : Aaa() {
-    override fun foo(vararg args: String?) = Unit
-}
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // FILE: Aaa.java
 // http://youtrack.jetbrains.com/issue/KT-1694

@@ -1,11 +0,0 @@
-// FILE: aa/A.java
-package aa;
-
-public class A {
-    public void f() { }
-}
-
-// FILE: B.kt
-import aa.A
-
-fun foo(a: A) = a.f()
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // FILE: aa/A.java
 package aa;

@@ -1,16 +0,0 @@
-// FILE: Aaa.java
-// http://youtrack.jetbrains.com/issue/KT-1880
-
-public class Aaa {
-    public static final int i = 1;
-}
-
-// FILE: Bbb.java
-
-public class Bbb extends Aaa {
-    public static final String i = "s";
-}
-
-// FILE: b.kt
-
-fun foo() = Bbb.i
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // FILE: Aaa.java
 // http://youtrack.jetbrains.com/issue/KT-1880

@@ -1,20 +0,0 @@
-// FILE: A.java
-public class A {}
-
-// FILE: X.java
-public class X<T> {
-    T foo() {return null;}
-    void bar(T a) {}
-}
-
-// FILE: Y.java
-public class Y extends X<String> {
-
-}
-
-// FILE: test.kt
-
-fun main() {
-    Y().foo().length
-    Y().bar(null)
-}
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // FILE: A.java
 public class A {}

@@ -1,20 +0,0 @@
-// FILE: A.java
-public class A {}
-
-// FILE: X.java
-public class X<T> {
-    T foo() {return null;}
-    void bar(T a) {}
-}
-
-// FILE: Y.java
-public class Y extends X<A> {
-
-}
-
-// FILE: test.kt
-
-fun main() {
-    Y().foo().hashCode()
-    Y().bar(null)
-}
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // FILE: A.java
 public class A {}

@@ -1,13 +0,0 @@
-// FILE: a/Test.java
-package a;
-
-public class Test<T> {
-  T t() {return null;}
-}
-// FILE: b.kt
-package a
-
-fun foo() {
-  // If this fails, it means that we have broken the rule that Java returns are always nullable
-  a.Test<Int>().t() + 1
-}
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // FILE: a/Test.java
 package a;

@@ -1,12 +0,0 @@
-// FILE: A.java
-@missing.Ann(x = "")
-public class A {
-    @missing.Ann(1)
-    public String foo() {}
-}
-
-// FILE: main.kt
-
-fun main() {
-    A().foo().length
-}
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // FILE: A.java
@missing.Ann(x = "")
 public class A {
@@ -1,19 +0,0 @@
-// FILE: MyAnnotation.java
-public @interface MyAnnotation {
-}
-// FILE: MyAnnoClass.java
-public class MyAnnoClass implements MyAnnotation {
-//...
-}
-
-// FILE: main.kt
-
-val ann: MyAnnotation = MyAnnoClass()
-
-fun foo(x: MyAnnoClass) {
-    bar(x)
-}
-
-fun bar(y: MyAnnotation) {
-    y.hashCode()
-}
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // FILE: MyAnnotation.java
 public @interface MyAnnotation {
 }
@@ -1,13 +0,0 @@
-// FILE: Hello.kt
-private class Hello()
-{
-    val a = 4
-}
-
-fun test() {
-    // no exception is thrown (see KT-3897)
-    Hello().a
-}
-
-// FILE: Hello.java
-public class Hello {}
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // FILE: Hello.kt
 private class Hello()
 {
@@ -1,16 +0,0 @@
-// !DIAGNOSTICS: -UNUSED_PARAMETER
-// FILE: A.java
-public class A {
-    public static void foo() {}
-    public static void foo(String x) {}
-
-    private void foo(int y) {}
-}
-
-// FILE: main.kt
-
-fun baz(x: (String) -> Unit) {}
-
-fun bar() {
-    baz(A::foo)
-}
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // !DIAGNOSTICS: -UNUSED_PARAMETER
 // FILE: A.java
 public class A {
@@ -1,22 +0,0 @@
-// FILE: CharBuffer.java
-
-public class CharBuffer implements CharSequence {
-    public final int length() {
-        return 0;
-    }
-
-    public final char charAt(int index) {
-        return get(position() + checkIndex(index, 1));
-    }
-
-    // The key problem here is that `get` has the same signature as kotlin.CharSequence.get but completely different semantics
-    public abstract char get(int index);
-    public abstract CharBuffer subSequence(int start, int end);
-}
-
-// FILE: main.kt
-
-fun test(cb: CharBuffer) {
-    cb.get(0)
-    (cb as CharSequence).get(0)
-}
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // FILE: CharBuffer.java

 public class CharBuffer implements CharSequence {
@@ -1,85 +0,0 @@
-// FILE: CollectionStringImpl.java
-
-import java.util.Collection;
-import java.util.Iterator;
-
-public class CollectionStringImpl implements Collection<String> {
-    @Override
-    public int size() {
-        return 0;
-    }
-
-    @Override
-    public boolean isEmpty() {
-        return false;
-    }
-
-    @Override
-    public boolean contains(Object o) {
-        return false;
-    }
-
-
-    @Override
-    public Iterator<String> iterator() {
-        return null;
-    }
-
-
-    @Override
-    public Object[] toArray() {
-        return new Object[0];
-    }
-
-
-    @Override
-    public <T> T[] toArray(T[] a) {
-        return null;
-    }
-
-    @Override
-    public boolean add(String s) {
-        return false;
-    }
-
-    @Override
-    public boolean remove(Object o) {
-        return false;
-    }
-
-    @Override
-    public boolean containsAll(Collection<?> c) {
-        return false;
-    }
-
-    @Override
-    public boolean addAll(Collection<? extends String> c) {
-        return false;
-    }
-
-    @Override
-    public boolean removeAll(Collection<?> c) {
-        return false;
-    }
-
-    @Override
-    public boolean retainAll(Collection<?> c) {
-        return false;
-    }
-
-    @Override
-    public void clear() {
-
-    }
-
-    public boolean contains(String o) {
-        return true;
-    }
-}
-
-// FILE: main.kt
-
-fun test(x: CollectionStringImpl) {
-    x.contains("")
-    (x as Collection<String>).contains("")
-}
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // FILE: CollectionStringImpl.java

 import java.util.Collection;
@@ -1,30 +0,0 @@
-// FILE: A.java
-abstract public class A implements CharSequence {
-    public char charAt(int x) { }
-    public int length() { return 1; }
-}
-
-// FILE: C.java
-abstract public class C implements CharSequence {
-    public char get(int x) { }
-    public int length() { return 1; }
-}
-
-// FILE: main.kt
-
-abstract class B : A(), CharSequence {
-    override operator fun get(index: Int) = '1'
-    override val length: Int get() = 1
-}
-
-fun main(a: A, b: B, c: C) {
-    a[0]
-    b[0]
-    c[0]
-
-    a.get(0)
-    b.get(0)
-    c.get(0)
-
-    a.length + b.length + c.length
-}
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // FILE: A.java
 abstract public class A implements CharSequence {
    public char charAt(int x) { }
@@ -1,19 +0,0 @@
-// FILE: A.java
-
-public abstract class A {
-    abstract public char charAt(int i);
-}
-
-// FILE: B.java
-
-abstract public class B extends A implements CharSequence {
-    public char charAt(int i) { return '1'; }
-}
-
-// FILE: main.kt
-
-abstract class C1 : B()
-
-abstract class C2 : B() {
-    override fun get(index: Int) = '1'
-}
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // FILE: A.java

 public abstract class A {
@@ -1,25 +0,0 @@
-// FILE: AImpl.java
-
-abstract public class AImpl {
-    public char charAt(int index) {
-        return '1';
-    }
-
-    public final int length() { return 1; }
-}
-
-// FILE: A.java
-public class A extends AImpl implements CharSequence {
-    public CharSequence subSequence(int start, int end) {
-        return null;
-    }
-}
-
-// FILE: X.kt
-class X : A()
-
-fun main() {
-    val x = X()
-    x[0]
-    x.length
-}
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // FILE: AImpl.java

 abstract public class AImpl {
@@ -1,28 +0,0 @@
-// !DIAGNOSTICS: -UNUSED_PARAMETER
-// FILE: AImpl.kt
-
-abstract class AImpl {
-    fun charAt(index: Int): Char {
-        return '1'
-    }
-
-    fun length(): Int {
-        return 1
-    }
-}
-
-// FILE: A.java
-public class A extends AImpl implements CharSequence {
-    public CharSequence subSequence(int start, int end) {
-        return null;
-    }
-}
-
-// FILE: X.kt
-class X : A()
-
-fun main() {
-    val x = X()
-    x[0]
-    x.length
-}
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // !DIAGNOSTICS: -UNUSED_PARAMETER
 // FILE: AImpl.kt

@@ -1,19 +0,0 @@
-// FILE: Dict.java
-
-public abstract class Dict<K, V> {
-    abstract public V get(Object key);
-}
-
-// FILE: MHashtable.java
-
-abstract public class MHashtable<X, Y> extends Dict<X, Y> implements java.util.Map<X, Y> {
-    public V get(Object key) { return null; }
-}
-
-// FILE: main.kt
-
-abstract class C1 : MHashtable<String, Int>()
-
-abstract class C2 : MHashtable<String, Int>() {
-    override fun get(key: String) = 1
-}
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // FILE: Dict.java

 public abstract class Dict<K, V> {
@@ -1,14 +0,0 @@
-// !DIAGNOSTICS: -UNUSED_VALUE -ASSIGNED_BUT_NEVER_ACCESSED_VARIABLE
-// JAVAC_EXPECTED_FILE
-// FILE: MyMap.java
-
-abstract public class MyMap extends java.util.AbstractMap<Double, CharSequence> {
-    String get(Object q) { }
-}
-
-// FILE: main.kt
-
-fun foo(m: MyMap) {
-    var x: String? = m.get(1.0)
-    x = m[2.0]
-}
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // !DIAGNOSTICS: -UNUSED_VALUE -ASSIGNED_BUT_NEVER_ACCESSED_VARIABLE
 // JAVAC_EXPECTED_FILE
 // FILE: MyMap.java
@@ -1,23 +0,0 @@
-// JAVAC_EXPECTED_FILE
-// FILE: A.java
-abstract public class A<F> extends B<F> {
-    public F remove(int x) { }
-    public boolean remove(Object x) { }
-}
-
-// FILE: main.kt
-import java.util.*;
-
-abstract class B<T> : MutableList<T>, AbstractList<T>() {
-    override fun removeAt(index: Int): T = null!!
-    override fun remove(element: T): Boolean = null!!
-}
-
-fun main(a: A<String>, b: B<String>, c: ArrayList<String>) {
-    a.remove("")
-    a.removeAt(0)
-    b.remove("")
-    b.removeAt(0)
-    c.remove("")
-    c.removeAt(0)
-}
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // JAVAC_EXPECTED_FILE
 // FILE: A.java
 abstract public class A<F> extends B<F> {
@@ -1,23 +0,0 @@
-// JAVAC_EXPECTED_FILE
-// FILE: A.java
-abstract public class A extends B {
-    public Integer removeAt(int x) { }
-    public boolean remove(Integer x) { }
-}
-
-// FILE: main.kt
-import java.util.*;
-
-abstract class B : MutableList<Int>, AbstractList<Int>() {
-    override fun removeAt(index: Int): Int = null!!
-    override fun remove(element: Int): Boolean = null!!
-}
-
-fun main(a: A, b: B, c: ArrayList<Int>) {
-    a.remove(1)
-    a.removeAt(0)
-    b.remove(1)
-    b.removeAt(0)
-    c.remove(1)
-    c.removeAt(0)
-}
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // JAVAC_EXPECTED_FILE
 // FILE: A.java
 abstract public class A extends B {
@@ -1,13 +0,0 @@
-// FILE: A.java
-
-abstract public class A<F> extends MyList<F> {
-    int getSize() { return 0; }
-}
-
-// FILE: main.kt
-
-abstract class MyList<G> : Collection<G> {}
-
-fun main(a: A<String>) {
-    a.size
-}
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // FILE: A.java

 abstract public class A<F> extends MyList<F> {
@@ -1,22 +0,0 @@
-// FILE: MyFunc.java
-public interface MyFunc<K, V> {
-    V apply(K String);
-}
-
-// FILE: ConcMap.java
-public interface ConcMap<K, V> {
-    V computeIfAbsent(K key, MyFunc<? super K,? extends V> mappingFunction);
-}
-
-// FILE: ConcHashMap.java
-public class ConcHashMap<K, V> implements ConcMap<K, V> {
-    @Override
-    V computeIfAbsent(K key, MyFunc<? super K,? extends V> mappingFunction) { }
-}
-
-// FILE: main.kt
-
-public fun concurrentMap() {
-    val map = ConcHashMap<String, String>()
-    map.computeIfAbsent("") { "" } // here
-}
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // FILE: MyFunc.java
 public interface MyFunc<K, V> {
    V apply(K String);
@@ -1,20 +0,0 @@
-// FILE: A.java
-import java.util.*;
-public class A {
-    public static void foo(Iterable<? super CharSequence> x) {}
-    public static void bar(Iterator<? super CharSequence> x) {}
-}
-
-// FILE: main.kt
-
-fun test(x: List<String>, y: List<*>, z: MutableList<*>, w: MutableList<in CharSequence>) {
-    A.foo(x)
-    A.foo(y)
-    A.foo(z)
-    A.foo(w)
-
-    A.bar(x.iterator())
-    A.bar(y.iterator())
-    A.bar(z.iterator())
-    A.bar(w.iterator())
-}
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // FILE: A.java
 import java.util.*;
 public class A {
@@ -1,12 +0,0 @@
-// FILE: MyEnum.java
-
-public enum MyEnum {
-    A;
-    public int getOrdinal() {return "";}
-}
-
-// FILE: main.kt
-
-fun foo() {
-    MyEnum.A.getOrdinal()
-}
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // FILE: MyEnum.java

 public enum MyEnum {
@@ -1,20 +0,0 @@
-// !DIAGNOSTICS: -UNUSED_PARAMETER
-// JAVAC_EXPECTED_FILE
-// FILE: VcsException.java
-import org.jetbrains.annotations.NotNull;
-
-public class VcsException extends Exception {
-    @Override
-    @NotNull
-    public String getMessage() {
-        return "";
-    }
-}
-
-// FILE: main.kt
-fun foo(e: VcsException) {
-    e.message.contains("")
-    "" in e.message
-}
-
-public operator fun CharSequence.contains(other: CharSequence): Boolean = true
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // !DIAGNOSTICS: -UNUSED_PARAMETER
 // JAVAC_EXPECTED_FILE
 // FILE: VcsException.java
@@ -1,19 +0,0 @@
-// !WITH_NEW_INFERENCE
-
-// FILE: TestClass.java
-import org.jetbrains.annotations.Nullable;
-public class TestClass {
-    public <T> T set(@Nullable String key, @Nullable T t) {
-        return t;
-    }
-}
-
-// FILE: main.kt
-fun run() {
-    val testClass = TestClass()
-    // inferred as `set<Nothing>()`, return type is Nothing!
-    testClass.set("test", null)
-
-    // Should not be unreachable
-    run()
-}
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // !WITH_NEW_INFERENCE

 // FILE: TestClass.java
@@ -1,19 +0,0 @@
-// !DIAGNOSTICS: -UNUSED_VARIABLE
-// FILE: R.java
-public class R<T extends R<T>> {
-    public <F extends R<F>> R(F x) {
-    }
-}
-
-// FILE: RImpl.java
-public class RImpl extends R<RImpl> {
-    public RImpl() {
-        <RImpl>super(null);
-    }
-}
-
-// FILE: main.kt
-fun test() {
-    val x: R<RImpl> = R(RImpl())
-    R<RImpl, RImpl>(RImpl())
-}
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // !DIAGNOSTICS: -UNUSED_VARIABLE
 // FILE: R.java
 public class R<T extends R<T>> {
@@ -1,18 +0,0 @@
-// FILE: A.java
-public interface A {
-    void foo(Runnable r);
-}
-
-// FILE: B.java
-public interface B extends A {
-    public void bar(Runnable r);
-}
-
-// FILE: test.kt
-class C: B {
-    override fun foo(r: Runnable?) {
-    }
-
-    override fun bar(r: Runnable?) {
-    }
-}
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // FILE: A.java
 public interface A {
    void foo(Runnable r);
@@ -1,37 +0,0 @@
-// JAVAC_EXPECTED_FILE
-// FILE: backend/asmutil/AsmUtil.java
-package backend.asmutil;
-
-import org.jetbrains.annotations.NotNull;
-import static frontend.JvmDeclarationOrigin.NO_ORIGIN;
-
-public class AsmUtil {
-
-    @NotNull
-    public static String doSmth(String s) {
-        Object or = NO_ORIGIN;
-        return "OK";
-    }
-}
-
-// FILE: First.kt
-package frontend
-public class JvmDeclarationOrigin {
-    companion object {
-        public val NO_ORIGIN: JvmDeclarationOrigin = JvmDeclarationOrigin()
-    }
-}
-
-// FILE: Second.kt
-package backend
-
-import backend.asmutil.AsmUtil.doSmth
-
-open public class ECallable  {
-    fun test() {
-        doSmth("")
-    }
-}
-
-/* KT-5848 */
-
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // JAVAC_EXPECTED_FILE
 // FILE: backend/asmutil/AsmUtil.java
 package backend.asmutil;
@@ -1,26 +0,0 @@
-// FILE: a/M.java
-package a;
-
-public class M {
-    public static class Inner {
-        private int i;
-        public Inner(int i) {
-            this.i = i;
-        }
-
-        public int getI() {
-            return i;
-        }
-    }
-}
-
-// FILE: b.kt
-package b
-
-import a.M.Inner
-
-fun foo() {
-    doSmth(Inner(87))
-}
-
-fun doSmth(b: Inner) = b
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // FILE: a/M.java
 package a;

@@ -1,17 +0,0 @@
-//FILE: a/C.java
-// KT-1431 StackOverflowException in IDE when using JavaFX builders
-package a;
-
-public class C<B extends C<B>> {
-    public static C<?> create() { return null; }
-    public C foo() {return null;}
-}
-
-//FILE: d.kt
-package d
-
-import a.C
-
-fun test() {
-    C.create().foo()
-}
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 //FILE: a/C.java
 // KT-1431 StackOverflowException in IDE when using JavaFX builders
 package a;
@@ -1,24 +0,0 @@
-// KT-1730 Method which has been implemented by Java is recognized to be abstract.
-
-// FILE: C.java
-public class C implements java.lang.CharSequence {
-    @Override
-    public int length() {
-        return 3;
-    }
-    @Override
-    public char charAt(int index) {
-        return 48;
-    }
-    @Override
-    public CharSequence subSequence(int start, int end) {
-        return "ab";
-    }
-    @Override
-    public String toString() {
-        return "abc";
-    }
-}
-
-// FILE: T.kt
-class T : C()
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // KT-1730 Method which has been implemented by Java is recognized to be abstract.

 // FILE: C.java
@@ -1,10 +0,0 @@
-//FILE: Bbb.kt
-open class Bbb
-
-//FILE: Ccc.java
-public class Ccc extends Bbb {
-}
-
-//FILE: Ddd.kt
-import Ccc
-
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 //FILE: Bbb.kt
 open class Bbb

@@ -1,15 +0,0 @@
-// !CHECK_TYPE
-
-//KT-2394 java.lang.Iterable<T> should be visible as kotlin.Iterable<out T>
-package d
-
-fun foo(iterable: Iterable<Int>, iterator: Iterator<Int>, comparable: Comparable<Any>) {
-    checkSubtype<Iterable<Any>>(iterable)
-    checkSubtype<Iterator<Any>>(iterator)
-    checkSubtype<Comparable<String>>(comparable)
-}
-
-fun bar(c: Collection<Int>) {
-    checkSubtype<Iterable<Any>>(c)
-    checkSubtype<Iterator<Any>>(c.iterator())
-}
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // !CHECK_TYPE

 //KT-2394 java.lang.Iterable<T> should be visible as kotlin.Iterable<out T>
@@ -1,21 +0,0 @@
-// FILE: Bug.java
-
-public interface Bug {
-        <RET extends Bug> RET save();
-}
-
-// FILE: SubBug.java
-
-public class SubBug implements Bug {
-        public SubBug save() {
-                return this;
-        }
-}
-
-// FILE: Bug.kt
-
-fun TestBug() {
-   SubBug().save() // can resolve on subtype
-   val bug: Bug = SubBug()
-   bug.save<Bug>() // can resolve on supertype
-}
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // FILE: Bug.java

 public interface Bug {
@@ -1,19 +0,0 @@
-// FILE: Super.java
-public class Super {
-    public boolean foo;
-    public boolean bar;
-
-    public void setFoo(boolean foo) {
-        this.foo = foo;
-    }
-}
-
-// FILE: b.kt
-public class Sub: Super() {
-}
-
-fun main() {
-    val x = Sub()
-    x.foo = true
-    x.bar = true
-}
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // FILE: Super.java
 public class Super {
    public boolean foo;
@@ -1,14 +0,0 @@
-// FILE: A.java
-public interface A<T extends A<? super T, ?>, S extends A<? super T, ?>> {}
-
-// FILE: C.java
-public class C
-{
-    public <T extends A<? super T, ?>, S extends A<? super T, ?>> void f(A<T, S> x){}
-}
-
-// FILE: main.kt
-fun foo() {
-    // TODO: uncomment when KT-9597 is fixed
-    // C().f(object : A<*, *> {})
-}
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // FILE: A.java
 public interface A<T extends A<? super T, ?>, S extends A<? super T, ?>> {}

@@ -1,18 +0,0 @@
-// FILE: Assert.java
-
-public class Assert {
-    public static <T> void assertThat(T actual, Matcher<? super T> matcher) {
-    }
-}
-
-// FILE: Matcher.java
-public class Matcher<T> {
-    public static <T> Matcher<java.lang.Iterable<? super T>> hasItem(T item) {
-        return null;
-    }
-}
-
-// FILE: main.kt
-fun test(x: List<String>) {
-    Assert.assertThat(x, Matcher.hasItem("abc"))
-}
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // FILE: Assert.java

 public class Assert {
@@ -1,29 +0,0 @@
-//FILE:a/JC.java
-package a;
-
-import java.util.Iterator;
-
-public interface JC<T> {
-    public Iterator<T> getIterator();
-
-    public void setIterator(Iterator<T> iterator);
-
-    public Iterable<T> getIterable();
-
-    public void setIterable(Iterable<T> iterable);
-}
-
-//FILE:n.kt
-package n
-
-import a.JC
-
-fun foo(c: JC<Int>, iterator: Iterator<Int>, iterable: Iterable<Int>) {
-    val mutableIterator: MutableIterator<Int>? = c.getIterator()
-    c.setIterator(mutableIterator)
-    c.setIterator(iterator)
-
-    val mutableIterable: MutableIterable<Int>? = c.getIterable()
-    c.setIterable(mutableIterable)
-    c.setIterable(iterable)
-}
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 //FILE:a/JC.java
 package a;

@@ -1,9 +0,0 @@
-// FULL_JDK
-
-import java.util.*
-import java.util.stream.Stream
-
-fun <T> Stream<T>?.getIfSingle() =
-        this?.map { Optional.ofNullable(it) }
-        ?.reduce(Optional.empty()) { _, _ -> Optional.empty() }
-        ?.orElse(null) // <<---- should not be an error
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // FULL_JDK

 import java.util.*
@@ -1,15 +0,0 @@
-//FILE: Foo.java
-public class Foo<T extends CharSequence> {
-}
-
-//FILE: Bar.java
-public interface Bar {
-    void f(Foo f);
-}
-
-//FILE: a.kt
-class BarImpl: Bar {
-    override fun f(f: Foo<*>?) {
-        throw UnsupportedOperationException()
-    }
-}
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 //FILE: Foo.java
 public class Foo<T extends CharSequence> {
 }
@@ -1,22 +0,0 @@
-// FILE: MyFunc.java
-
-public interface MyFunc {
-    String apply(String x);
-}
-
-// FILE: A.java
-public interface A<K> {
-    K foo(K key, MyFunc f);
-}
-
-// FILE: B.java
-public class B<E> implements A<E> {
-    @Override
-    public E foo(E key, MyFunc f) {return null;}
-}
-
-// FILE: main.kt
-
-fun main() {
-    B<String>().foo("") { "" }
-}
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // FILE: MyFunc.java

 public interface MyFunc {
@@ -1,17 +0,0 @@
-// KT-4021 Java's Package visibilty does not work for static methods
-
-// FILE: foo/Bar.java
-
-package foo;
-
-class Bar {
-    static void baz() {}
-}
-
-// FILE: main.kt
-
-package foo
-
-fun main() {
-    Bar.baz()
-}
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // KT-4021 Java's Package visibilty does not work for static methods

 // FILE: foo/Bar.java
@@ -1,29 +0,0 @@
-// !LANGUAGE: +InlineClasses
-// FILE: kt1.kt
-package kt
-
-inline class Z(val value: Int)
-
-interface IFoo<T> {
-    fun foo(): T
-}
-
-open class KFooZ : IFoo<Z> {
-    override fun foo(): Z = Z(42)
-}
-
-// FILE: j/J.java
-package j;
-
-import kt.Z;
-import kt.KFooZ;
-
-public class J extends KFooZ {
-}
-
-// FILE: kt2.kt
-package kt
-
-import j.J
-
-fun jfoo(x: J) = x.foo()
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // !LANGUAGE: +InlineClasses
 // FILE: kt1.kt
 package kt
@@ -1,19 +0,0 @@
-// FILE: B.java
-
-public abstract class B implements A {
-    private int size = 1;
-}
-
-// FILE: main.kt
-
-interface A {
-    val size: Int
-}
-
-class C : B() {
-    override val size: Int get() = 1
-}
-
-fun foo() {
-    C().size 
-}
@@ -1,3 +1,4 @@
+// FIR_IDENTICAL
 // FILE: B.java

 public abstract class B implements A {
--- a/Show More
+++ b/Show More