From 508bc8720d528a51ddb25be4133f0fc0bf896e24 Mon Sep 17 00:00:00 2001
From: Marc-Andre Laperle <marc-andre.laperle@ericsson.com>
Date: Sun, 14 Jul 2013 16:38:17 -0400
Subject: [PATCH] Bug 412555 - ClassCastException in EvalID.instantiate

Change-Id: I38ecb4f07834e7a2466ab42e048f32bfc1fccb50
Signed-off-by: Marc-Andre Laperle <marc-andre.laperle@ericsson.com>
Reviewed-on: https://git.eclipse.org/r/14540
Reviewed-by: Sergey Prigogin <eclipse.sprigogin@gmail.com>
---
 .../parser/tests/ast2/AST2TemplateTests.java  | 36 +++++++++++++++++++
 .../core/dom/parser/cpp/semantics/EvalID.java | 11 ++++--
 2 files changed, 44 insertions(+), 3 deletions(-)

diff --git a/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ast2/AST2TemplateTests.java b/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ast2/AST2TemplateTests.java
index 0f5915c42d7..e7810e8fb8e 100644
--- a/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ast2/AST2TemplateTests.java
+++ b/core/org.eclipse.cdt.core.tests/parser/org/eclipse/cdt/core/parser/tests/ast2/AST2TemplateTests.java
@@ -14,6 +14,7 @@
  *     Thomas Corbat (IFS)
  *     Nathan Ridge
  *     Danny Ferreira
+ *     Marc-Andre Laperle (Ericsson)
  *******************************************************************************/
 package org.eclipse.cdt.core.parser.tests.ast2;
 
@@ -7955,4 +7956,39 @@ public class AST2TemplateTests extends AST2TestBase {
 		ICPPField privateMemberVariable = bh.assertNonProblemOnFirstIdentifier("privateMemberVariable =");
 		assertVisibility(ICPPClassType.v_private, aTemplate.getVisibility(privateMemberVariable));
 	}
+
+	//	template<bool B, class T = void>
+	//	struct enable_if_c {
+	//	  typedef T type;
+	//	};
+	//
+	//	template<class T>
+	//	struct enable_if_c<false, T> {
+	//	};
+	//
+	//	template<class Cond, class T = void>
+	//	struct enable_if: public enable_if_c<Cond::value, T> {
+	//	};
+	//
+	//	template<typename T, typename = void>
+	//	struct some_trait {
+	//	  static const bool value = true;
+	//	};
+	//
+	//	template<typename T>
+	//	struct some_trait<T, typename enable_if_c<T::some_trait_value>::type> {
+	//	  static const bool value = true;
+	//	};
+	//
+	//	template<typename T>
+	//	inline typename enable_if_c<some_trait<T>::value>::type foo() {
+	//	}
+	//
+	//	typedef int myInt;
+	//	int main() {
+	//	  foo<myInt>();
+	//	}
+	public void testInstantiationOfTypedef_412555() throws Exception {
+		parseAndCheckBindings();
+	}
 }
diff --git a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/semantics/EvalID.java b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/semantics/EvalID.java
index a069e4d17c0..306d17cac7c 100644
--- a/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/semantics/EvalID.java
+++ b/core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/semantics/EvalID.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2012 Wind River Systems, Inc. and others.
+ * Copyright (c) 2012, 2013 Wind River Systems, Inc. and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
@@ -315,8 +315,13 @@ public class EvalID extends CPPDependentEvaluation {
 					tpMap, packOffset, within, point);
 		} else if (nameOwner instanceof IType) {
 			IType type = CPPTemplates.instantiateType((IType) nameOwner, tpMap, packOffset, within, point);
-			if (type instanceof IBinding)
-				nameOwner = (IBinding) getNestedType(type, TDEF);
+			if (type instanceof IBinding) {
+				type = getNestedType(type, TDEF);
+			}
+
+			if (!(type instanceof IBinding))
+				return EvalFixed.INCOMPLETE;
+			nameOwner = (IBinding)type;
 		}
 
 		if (fieldOwner instanceof IProblemBinding || nameOwner instanceof IProblemBinding)