From 28940256e35042ee0b8ac62b35a5d5b9d71f2715 Mon Sep 17 00:00:00 2001
From: Alexander Udalov <Alexander.Udalov@jetbrains.com>
Date: Mon, 7 Apr 2014 20:15:00 +0400
Subject: [PATCH] Minor, add bytecode text test on bridges for fake overrides

---
 .../bytecodeText/bridgeForFakeOverride.kt     | 20 +++++++++++++++++++
 .../codegen/BytecodeTextTestGenerated.java    |  5 +++++
 2 files changed, 25 insertions(+)
 create mode 100644 compiler/testData/codegen/bytecodeText/bridgeForFakeOverride.kt

diff --git a/compiler/testData/codegen/bytecodeText/bridgeForFakeOverride.kt b/compiler/testData/codegen/bytecodeText/bridgeForFakeOverride.kt
new file mode 100644
index 00000000000..afa807eb43e
--- /dev/null
+++ b/compiler/testData/codegen/bytecodeText/bridgeForFakeOverride.kt
@@ -0,0 +1,20 @@
+trait A {
+    fun foo(): Object
+}
+
+open class B {
+    fun foo(): String = "hello"
+}
+
+open class C : B()
+
+class D : A, C() {
+    // There's a fake override for 'foo' in class D, and, since there are declarations with different signatures in the supertypes,
+    // a bridge is generated with the signature foo()Ljava/lang/Object; which invokes foo()Ljava/lang/String;
+    // This test checks that the generated bridge calls D.foo() instead of B.foo(). That way when an implementation of
+    // foo()Ljava/lang/String is added to C later, D won't need to be recompiled.
+    // Note that invokevirtual/invokespecial of C.foo() would also be fine (invokespecial is javac's behavior).
+}
+
+// 1 INVOKEVIRTUAL D.foo
+// 0 INVOKEVIRTUAL B.foo
diff --git a/compiler/tests/org/jetbrains/jet/codegen/BytecodeTextTestGenerated.java b/compiler/tests/org/jetbrains/jet/codegen/BytecodeTextTestGenerated.java
index 47aa95ba354..3a143a94c73 100644
--- a/compiler/tests/org/jetbrains/jet/codegen/BytecodeTextTestGenerated.java
+++ b/compiler/tests/org/jetbrains/jet/codegen/BytecodeTextTestGenerated.java
@@ -57,6 +57,11 @@ public class BytecodeTextTestGenerated extends AbstractBytecodeTextTest {
         doTest("compiler/testData/codegen/bytecodeText/annotationRetentionPolicySource.kt");
     }
     
+    @TestMetadata("bridgeForFakeOverride.kt")
+    public void testBridgeForFakeOverride() throws Exception {
+        doTest("compiler/testData/codegen/bytecodeText/bridgeForFakeOverride.kt");
+    }
+    
     @TestMetadata("componentEvaluatesOnlyOnce.kt")
     public void testComponentEvaluatesOnlyOnce() throws Exception {
         doTest("compiler/testData/codegen/bytecodeText/componentEvaluatesOnlyOnce.kt");