Schur decomposition of 1-by-1 always converges.

1 files changed, 7 insertions, 4 deletions

diff --git a/test/schur_real.cpp b/test/schur_real.cpp
index 1e8c4b0ba..2eae52956 100644
--- a/test/schur_real.cpp
+++ b/test/schur_real.cpp
@@ -85,10 +85,13 @@ template<typename MatrixType> void schur(int size = MatrixType::ColsAtCompileTim
   VERIFY_IS_EQUAL(rs1.matrixT(), rsOnlyT.matrixT());
   VERIFY_RAISES_ASSERT(rsOnlyT.matrixU());
 
-  // Test matrix with NaN
-  A(0,0) = std::numeric_limits<typename MatrixType::Scalar>::quiet_NaN();
-  RealSchur<MatrixType> rsNaN(A);
-  VERIFY_IS_EQUAL(rsNaN.info(), NoConvergence);
+  if (size > 1)
+  {
+    // Test matrix with NaN
+    A(0,0) = std::numeric_limits<typename MatrixType::Scalar>::quiet_NaN();
+    RealSchur<MatrixType> rsNaN(A);
+    VERIFY_IS_EQUAL(rsNaN.info(), NoConvergence);
+  }
 }
 
 void test_schur_real()