From a3f7edf7e7672094190e04a0b4417de1abfa3de5 Mon Sep 17 00:00:00 2001
From: Gael Guennebaud <g.gael@free.fr>
Date: Thu, 23 Jun 2016 10:25:04 +0200
Subject: Biug 1242: fix comma init with empty matrices.

---
 test/commainitializer.cpp | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

(limited to 'test/commainitializer.cpp')

diff --git a/test/commainitializer.cpp b/test/commainitializer.cpp
index 99102b966..86bdb040e 100644
--- a/test/commainitializer.cpp
+++ b/test/commainitializer.cpp
@@ -43,4 +43,27 @@ void test_commainitializer()
         4, 5, 6,
         vec[2].transpose();
   VERIFY_IS_APPROX(m3, ref);
+
+
+  // Check with empty matrices (bug #1242)
+  {
+    int const M = 0;
+    int const N1 = 2;
+    int const N2 = 1;
+
+    {
+      Matrix<double, M, N1> A1;
+      Matrix<double, M, N2> A2;
+      Matrix<double, M, N1 + N2> B;
+      B << A1, A2;
+    }
+    {
+      Matrix<double, N1, M> A1;
+      Matrix<double, N2, M> A2;
+      Matrix<double, N1 + N2, M> B;
+      B << A1,
+           A2;
+    }
+  }
+
 }
-- 
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