From 096af597992609be62ec1104fdee476e3065f2e4 Mon Sep 17 00:00:00 2001
From: Christoph Hertzberg <chtz@informatik.uni-bremen.de>
Date: Fri, 4 Apr 2014 17:48:37 +0200
Subject: [PATCH] Fix bug #784: Assert if assigning a product to a
 triangularView does not match the size.

---
 Eigen/src/Core/products/GeneralMatrixMatrixTriangular.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Eigen/src/Core/products/GeneralMatrixMatrixTriangular.h b/Eigen/src/Core/products/GeneralMatrixMatrixTriangular.h
index ffa871cae..225b994d1 100644
--- a/Eigen/src/Core/products/GeneralMatrixMatrixTriangular.h
+++ b/Eigen/src/Core/products/GeneralMatrixMatrixTriangular.h
@@ -265,6 +265,8 @@ template<typename MatrixType, unsigned int UpLo>
 template<typename ProductDerived, typename _Lhs, typename _Rhs>
 TriangularView<MatrixType,UpLo>& TriangularView<MatrixType,UpLo>::assignProduct(const ProductBase<ProductDerived, _Lhs,_Rhs>& prod, const Scalar& alpha)
 {
+  eigen_assert(m_matrix.rows() == prod.rows() && m_matrix.cols() == prod.cols());
+
   general_product_to_triangular_selector<MatrixType, ProductDerived, UpLo, (_Lhs::ColsAtCompileTime==1) || (_Rhs::RowsAtCompileTime==1)>::run(m_matrix.const_cast_derived(), prod.derived(), alpha);
   
   return *this;