diff --git a/Eigen/src/Core/Coeffs.h b/Eigen/src/Core/Coeffs.h
index b170ffda7..8e298de7d 100644
--- a/Eigen/src/Core/Coeffs.h
+++ b/Eigen/src/Core/Coeffs.h
@@ -5,12 +5,12 @@
 //
 // Eigen is free software; you can redistribute it and/or
 // modify it under the terms of the GNU Lesser General Public
-// License as published by the Free Software Foundation; either 
+// License as published by the Free Software Foundation; either
 // version 3 of the License, or (at your option) any later version.
 //
 // Alternatively, you can redistribute it and/or
 // modify it under the terms of the GNU General Public License as
-// published by the Free Software Foundation; either version 2 of 
+// published by the Free Software Foundation; either version 2 of
 // the License, or (at your option) any later version.
 //
 // Eigen is distributed in the hope that it will be useful, but WITHOUT ANY
@@ -18,7 +18,7 @@
 // FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License or the
 // GNU General Public License for more details.
 //
-// You should have received a copy of the GNU Lesser General Public 
+// You should have received a copy of the GNU Lesser General Public
 // License and a copy of the GNU General Public License along with
 // Eigen. If not, see <http://www.gnu.org/licenses/>.
 
diff --git a/Eigen/src/Core/Util.h b/Eigen/src/Core/Util.h
index d82ec574f..6166394ee 100644
--- a/Eigen/src/Core/Util.h
+++ b/Eigen/src/Core/Util.h
@@ -217,7 +217,9 @@ struct ei_result_of<Func(ArgType)> {
     static ei_has_tr1_result      testFunctor(T const *, typename T::template result<T(ArgType)>::type const * = 0);
     static ei_has_none            testFunctor(...);
 
-    typedef typename ei_unary_result_of_select<Func, ArgType, sizeof(testFunctor(static_cast<Func*>(0)))>::type type;
+    // note that the following indirection is needed for gcc-3.3
+    enum {FunctorType = sizeof(testFunctor(static_cast<Func*>(0)))};
+    typedef typename ei_unary_result_of_select<Func, ArgType, FunctorType>::type type;
 };
 
 template<typename Func, typename ArgType0, typename ArgType1, int SizeOf=sizeof(ei_has_none)>
@@ -239,7 +241,9 @@ struct ei_result_of<Func(ArgType0,ArgType1)> {
     static ei_has_tr1_result      testFunctor(T const *, typename T::template result<T(ArgType0,ArgType1)>::type const * = 0);
     static ei_has_none            testFunctor(...);
 
-    typedef typename ei_binary_result_of_select<Func, ArgType0, ArgType1, sizeof(testFunctor(static_cast<Func*>(0)))>::type type;
+    // note that the following indirection is needed for gcc-3.3
+    enum {FunctorType = sizeof(testFunctor(static_cast<Func*>(0)))};
+    typedef typename ei_binary_result_of_select<Func, ArgType0, ArgType1, FunctorType>::type type;
 };
 
 #endif // EIGEN_UTIL_H