safer toString in classes

compiler/frontend/src/org/jetbrains/jet/lang/descriptors/DeclarationDescriptorImpl.java

@@ -51,7 +51,7 @@ public abstract class DeclarationDescriptorImpl extends AnnotatedImpl implements
         } catch (Throwable e) {
             // DescriptionRenderer may throw if this is not yet completely initialized
             // It is very inconvenient while debugging
-            return super.toString();
+            return this.getClass().getName() + "@" + System.identityHashCode(this);
         }
     }
 }

compiler/frontend/src/org/jetbrains/jet/lang/descriptors/TypeParameterDescriptor.java

@@ -165,7 +165,11 @@ public class TypeParameterDescriptor extends DeclarationDescriptorImpl implement
 
     @Override
     public String toString() {
-        return DescriptorRenderer.TEXT.render(this);
+        try {
+            return DescriptorRenderer.TEXT.render(this);
+        } catch (Exception e) {
+            return this.getClass().getName() + "@" + System.identityHashCode(this);
+        }
     }
 
     @NotNull