Fix #1974: assertion when reserving an empty sparse matrix

1 files changed, 8 insertions, 0 deletions

diff --git a/test/sparse_basic.cpp b/test/sparse_basic.cpp
index 9e735b38b..5f8762172 100644
--- a/test/sparse_basic.cpp
+++ b/test/sparse_basic.cpp
@@ -662,6 +662,14 @@ template<typename SparseMatrixType> void sparse_basic(const SparseMatrixType& re
     iters[0] = IteratorType(m2,0);
     iters[1] = IteratorType(m2,m2.outerSize()-1);
   }
+
+  // test reserve with empty rows/columns
+  {
+    SparseMatrixType m1(0,cols);
+    m1.reserve(ArrayXi::Constant(m1.outerSize(),1));
+    SparseMatrixType m2(rows,0);
+    m2.reserve(ArrayXi::Constant(m2.outerSize(),1));
+  }
 }