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-rw-r--r--Eigen/src/Core/util/SymbolicIndex.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/Eigen/src/Core/util/SymbolicIndex.h b/Eigen/src/Core/util/SymbolicIndex.h
index 17cf46f05..354dd9add 100644
--- a/Eigen/src/Core/util/SymbolicIndex.h
+++ b/Eigen/src/Core/util/SymbolicIndex.h
@@ -65,7 +65,7 @@ class ValueExpr<internal::FixedInt<N> > {
public:
ValueExpr() {}
template<typename T>
- Index eval_impl(const T&) const { return N; }
+ EIGEN_CONSTEXPR Index eval_impl(const T&) const { return N; }
};