From 09364c8d05e1ca82773ded6eb5d29f12eaa87734 Mon Sep 17 00:00:00 2001
From: Benoit Jacob <jacob.benoit.1@gmail.com>
Date: Mon, 12 Oct 2009 12:29:07 -0400
Subject: [PATCH] fix compilation with gcc 3.3

---
 Eigen/src/Core/Matrix.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Eigen/src/Core/Matrix.h b/Eigen/src/Core/Matrix.h
index ffd16d376..22090c777 100644
--- a/Eigen/src/Core/Matrix.h
+++ b/Eigen/src/Core/Matrix.h
@@ -505,7 +505,9 @@ class Matrix
     template<typename OtherDerived>
     EIGEN_STRONG_INLINE Matrix& _set(const MatrixBase<OtherDerived>& other)
     {
-      _set_selector(other.derived(), typename ei_meta_if<bool(int(OtherDerived::Flags) & EvalBeforeAssigningBit), ei_meta_true, ei_meta_false>::ret());
+      // this enum introduced to fix compilation with gcc 3.3
+      enum { cond = int(OtherDerived::Flags) & EvalBeforeAssigningBit };
+      _set_selector(other.derived(), typename ei_meta_if<bool(cond), ei_meta_true, ei_meta_false>::ret());
       return *this;
     }