Nullability for java.lang.ref.Reference.get

compiler/testData/resolvedCalls/enhancedSignatures/references/softReference.kt

@@ -0,0 +1,15 @@
+import java.lang.ref.*
+
+fun notNull(r: SoftReference<String>) {
+    r.<caret>get()
+}
+
+fun nullable(r: SoftReference<String?>) {
+    r.<caret>get()
+}
+
+fun platform() {
+    val r = SoftReference("x")
+    r.<caret>get()
+}
+

compiler/testData/resolvedCalls/enhancedSignatures/references/softReference.txt

@@ -0,0 +1,23 @@
+import java.lang.ref.*
+
+fun notNull(r: SoftReference<String>) {
+    r.get()
+        // SUCCESS
+        // ORIGINAL:    fun get(): T? defined in java.lang.ref.SoftReference
+        // SUBSTITUTED: fun get(): String? defined in java.lang.ref.SoftReference
+}
+
+fun nullable(r: SoftReference<String?>) {
+    r.get()
+        // SUCCESS
+        // ORIGINAL:    fun get(): T? defined in java.lang.ref.SoftReference
+        // SUBSTITUTED: fun get(): String? defined in java.lang.ref.SoftReference
+}
+
+fun platform() {
+    val r = SoftReference("x")
+    r.get()
+        // SUCCESS
+        // ORIGINAL:    fun get(): T? defined in java.lang.ref.SoftReference
+        // SUBSTITUTED: fun get(): String? defined in java.lang.ref.SoftReference
+}

compiler/testData/resolvedCalls/enhancedSignatures/references/weakReference.kt

@@ -0,0 +1,15 @@
+import java.lang.ref.*
+
+fun notNull(r: WeakReference<String>) {
+    r.<caret>get()
+}
+
+fun nullable(r: WeakReference<String?>) {
+    r.<caret>get()
+}
+
+fun platform() {
+    val r = WeakReference("x")
+    r.<caret>get()
+}
+

compiler/testData/resolvedCalls/enhancedSignatures/references/weakReference.txt

@@ -0,0 +1,23 @@
+import java.lang.ref.*
+
+fun notNull(r: WeakReference<String>) {
+    r.get()
+        // SUCCESS
+        // ORIGINAL:    fun get(): T? defined in java.lang.ref.WeakReference
+        // SUBSTITUTED: fun get(): String? defined in java.lang.ref.WeakReference
+}
+
+fun nullable(r: WeakReference<String?>) {
+    r.get()
+        // SUCCESS
+        // ORIGINAL:    fun get(): T? defined in java.lang.ref.WeakReference
+        // SUBSTITUTED: fun get(): String? defined in java.lang.ref.WeakReference
+}
+
+fun platform() {
+    val r = WeakReference("x")
+    r.get()
+        // SUCCESS
+        // ORIGINAL:    fun get(): T? defined in java.lang.ref.WeakReference
+        // SUBSTITUTED: fun get(): String? defined in java.lang.ref.WeakReference
+}

compiler/tests-java8/tests/org/jetbrains/kotlin/resolve/calls/EnhancedSignaturesResolvedCallsTestGenerated.java

@@ -197,4 +197,25 @@ public class EnhancedSignaturesResolvedCallsTestGenerated extends AbstractEnhanc
             doTest(fileName);
         }
     }
+
+    @TestMetadata("compiler/testData/resolvedCalls/enhancedSignatures/references")
+    @TestDataPath("$PROJECT_ROOT")
+    @RunWith(JUnit3RunnerWithInners.class)
+    public static class References extends AbstractEnhancedSignaturesResolvedCallsTest {
+        public void testAllFilesPresentInReferences() throws Exception {
+            KotlinTestUtils.assertAllTestsPresentByMetadata(this.getClass(), new File("compiler/testData/resolvedCalls/enhancedSignatures/references"), Pattern.compile("^(.+)\\.kt$"), TargetBackend.ANY, true);
+        }
+
+        @TestMetadata("softReference.kt")
+        public void testSoftReference() throws Exception {
+            String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/resolvedCalls/enhancedSignatures/references/softReference.kt");
+            doTest(fileName);
+        }
+
+        @TestMetadata("weakReference.kt")
+        public void testWeakReference() throws Exception {
+            String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/resolvedCalls/enhancedSignatures/references/weakReference.kt");
+            doTest(fileName);
+        }
+    }
 }

core/descriptor.loader.java/src/org/jetbrains/kotlin/load/java/typeEnhancement/predefinedEnhancementInfo.kt

@@ -144,6 +144,12 @@ val PREDEFINED_FUNCTION_ENHANCEMENT_INFO_BY_SIGNATURE = signatures {
             }
         }
 
+        forClass(javaLang("ref/Reference")) {
+            function("get") {
+                returns(JLObject, NULLABLE)
+            }
+        }
+
         forClass(JFPredicate) {
             function("test") {
                 parameter(JLObject, NOT_PLATFORM)