commit 4dd126c630a37050e9431746b1d5263bb57579db
author Erik Schultheis <erik.schultheis@aalto.fi> Tue Nov 30 17:17:41 2021 +0000
committer Rasmus Munk Larsen <rmlarsen@google.com> Tue Nov 30 17:17:41 2021 +0000
tree eed3acb97c6166619ba7b9ab8116f0fbad0f2c8a
parent 4d3e50036fc566fac3f857a508774e1d005ec866

fixed cholesky with 0 sized matrix (cf. #785)

Eigen/src/Cholesky/LLT_LAPACKE.h

diff --git a/Eigen/src/Cholesky/LLT_LAPACKE.h b/Eigen/src/Cholesky/LLT_LAPACKE.h
index d7d75bd..bde9bcd 100644
--- a/Eigen/src/Cholesky/LLT_LAPACKE.h
+++ b/Eigen/src/Cholesky/LLT_LAPACKE.h
@@ -35,7 +35,7 @@
 
 #include "./InternalHeaderCheck.h"
 
-namespace Eigen { 
+namespace Eigen {
 
 namespace internal {
 
@@ -106,7 +106,11 @@
     template<typename MatrixType>
     static Index blocked(MatrixType& m)
     {
-      eigen_assert(m.rows()==m.cols());
+      eigen_assert(m.rows() == m.cols());
+      if(m.rows() == 0) {
+        return -1;
+      }
+
       /* Set up parameters for ?potrf */
       lapack_int size = convert_index<lapack_int>(m.rows());
       lapack_int StorageOrder = MatrixType::Flags&RowMajorBit?RowMajor:ColMajor;