From 1156f2a6d60337369fe6406880a984d033e1a2fc Mon Sep 17 00:00:00 2001
From: Dmitry Jemerov <yole@jetbrains.com>
Date: Mon, 13 Aug 2012 12:37:24 +0200
Subject: [PATCH] PIEAE diagnostics (EA-38139 - PIEAE:
 PsiElementBase.getContainingFile)

---
 .../jetbrains/python/psi/impl/PyReferenceExpressionImpl.java  | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/python/src/com/jetbrains/python/psi/impl/PyReferenceExpressionImpl.java b/python/src/com/jetbrains/python/psi/impl/PyReferenceExpressionImpl.java
index 743c61a0be8d..dafb4afe3bcb 100644
--- a/python/src/com/jetbrains/python/psi/impl/PyReferenceExpressionImpl.java
+++ b/python/src/com/jetbrains/python/psi/impl/PyReferenceExpressionImpl.java
@@ -206,6 +206,10 @@ public class PyReferenceExpressionImpl extends PyElementImpl implements PyRefere
         if (target == this || target == null) {
           continue;
         }
+        if (!target.isValid()) {
+          LOG.error("Reference " + this + " resolved to invalid element " + target + " (text=" + target.getText() + ")");
+          continue;
+        }
         type = getTypeFromTarget(target, context, this);
         if (type != null) {
           return type;