Fixed VerifyError when copyToArray() is immediately returned from method.

compiler/backend/src/org/jetbrains/jet/codegen/intrinsics/CopyToArray.java

@@ -31,6 +31,8 @@ public class CopyToArray implements IntrinsicMethod {
         v.newarray(expectedType.getElementType());
         v.invokeinterface("java/util/Collection", "toArray", "([Ljava/lang/Object;)[Ljava/lang/Object;");
 
+        StackValue.coerce(Type.getType("[Ljava/lang/Object;"), expectedType, v);
+
         return StackValue.onStack(expectedType);
     }
 }

compiler/testData/codegen/boxWithStdlib/toArray/returnCopyToArray.kt

@@ -0,0 +1,10 @@
+import java.util.Arrays
+
+fun getCopyToArray(): Array<Int> = Arrays.asList(2, 3, 9).copyToArray()
+
+fun box(): String {
+    val str = Arrays.toString(getCopyToArray())
+    if (str != "[2, 3, 9]") return str
+
+    return "OK"
+}

compiler/tests/org/jetbrains/jet/codegen/generated/BlackBoxWithStdlibCodegenTestGenerated.java

@@ -955,7 +955,12 @@ public class BlackBoxWithStdlibCodegenTestGenerated extends AbstractBlackBoxCode
         public void testKt3177_copyToArray() throws Exception {
             doTestWithStdlib("compiler/testData/codegen/boxWithStdlib/toArray/kt3177-copyToArray.kt");
         }
-
+        
+        @TestMetadata("returnCopyToArray.kt")
+        public void testReturnCopyToArray() throws Exception {
+            doTestWithStdlib("compiler/testData/codegen/boxWithStdlib/toArray/returnCopyToArray.kt");
+        }
+        
     }
     
     public static Test suite() {