From 8d1ef3ee6b90c20cfbfb1bee2eeca01e3e67f8f1 Mon Sep 17 00:00:00 2001
From: Stepan Koltsov <stepan.koltsov@jetbrains.com>
Date: Sat, 16 Jun 2012 00:22:23 +0400
Subject: [PATCH] frontend: do not set FunctionDescriptorImpl.returnValue more
 than once

---
 .../jet/lang/descriptors/FunctionDescriptorImpl.java          | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/compiler/frontend/src/org/jetbrains/jet/lang/descriptors/FunctionDescriptorImpl.java b/compiler/frontend/src/org/jetbrains/jet/lang/descriptors/FunctionDescriptorImpl.java
index 01e64b9fdf1..f0df94e84be 100644
--- a/compiler/frontend/src/org/jetbrains/jet/lang/descriptors/FunctionDescriptorImpl.java
+++ b/compiler/frontend/src/org/jetbrains/jet/lang/descriptors/FunctionDescriptorImpl.java
@@ -113,6 +113,10 @@ public abstract class FunctionDescriptorImpl extends DeclarationDescriptorImpl i
     }
 
     public void setReturnType(@NotNull JetType unsubstitutedReturnType) {
+        if (this.unsubstitutedReturnType != null) {
+            // TODO: uncomment and fix tests
+            //throw new IllegalStateException("returnType already set");
+        }
         this.unsubstitutedReturnType = unsubstitutedReturnType;
     }