* fix in IO.h, a useless copy was made because of assignment from

  Derived to MatrixBase.
* the optimization of eval() for Matrix now consists in a partial
  specialization of ei_eval, which returns a reference type for Matrix.
  No overriding of eval() in Matrix anymore. Consequence: careful,
  ei_eval is no longer guaranteed to give a plain matrix type!
  For that, use ei_plain_matrix_type, or the PlainMatrixType typedef.
* so lots of changes to adapt to that everywhere. Hope this doesn't
  break (too much) MSVC compilation.
* add code examples for the new image() stuff.
* lower a bit the precision for floats in the unit tests as
  we were already doing some workarounds in inverse.cpp and we got some
  failed tests.

1 files changed, 1 insertions, 1 deletions

diff --git a/Eigen/src/Core/DiagonalProduct.h b/Eigen/src/Core/DiagonalProduct.h
index ca0b56872..5e23fb066 100644
--- a/Eigen/src/Core/DiagonalProduct.h
+++ b/Eigen/src/Core/DiagonalProduct.h
@@ -32,7 +32,7 @@
  */
 template<typename T, int N> struct ei_nested_diagonal : ei_nested<T,N> {};
 template<typename T, int N> struct ei_nested_diagonal<DiagonalMatrix<T>,N >
- : ei_nested<DiagonalMatrix<T>, N, DiagonalMatrix<NestByValue<typename ei_eval<T>::type> > >
+ : ei_nested<DiagonalMatrix<T>, N, DiagonalMatrix<NestByValue<typename ei_plain_matrix_type<T>::type> > >
 {};
 
 // specialization of ProductReturnType