commit 723a59ac26d28e42ad07221dc30b75ea8049ce1f
author Gael Guennebaud <g.gael@free.fr> Fri Jun 09 12:54:40 2017 +0200
committer Gael Guennebaud <g.gael@free.fr> Fri Jun 09 12:54:40 2017 +0200
tree c209114e3049f9c03f005c95aa88530cfa3b4027
parent 8640093af1f66dd6c390420ee6919f7ba0c89e0c

add regression test for aliasing in product rewritting

test/product.h

diff --git a/test/product.h b/test/product.h
index 3b65112..0425a92 100644
--- a/test/product.h
+++ b/test/product.h
@@ -216,6 +216,8 @@
     // CwiseBinaryOp
     VERIFY_IS_APPROX(x = y + A*x, A*z);
     x = z;
+    VERIFY_IS_APPROX(x = y - A*x, A*(-z));
+    x = z;
     // CwiseUnaryOp
     VERIFY_IS_APPROX(x = Scalar(1.)*(A*x), A*z);
   }