commit e75b1eb883bd65f8f34b1ca2ca13cd28744ab13a
author Gael Guennebaud <g.gael@free.fr> Wed Jul 25 09:33:50 2012 +0200
committer Gael Guennebaud <g.gael@free.fr> Wed Jul 25 09:33:50 2012 +0200
tree 48adc816550fa2e68636054fa58a25c00d08540b
parent 7b34b5f6f98115efbda9d127378aea5d403a4905

Fix aliasing issue in sparse matrix assignment.
(m=-m; or m=m.transpose(); with m sparse work again)

test/sparse_basic.cpp

diff --git a/test/sparse_basic.cpp b/test/sparse_basic.cpp
index 7674514..4566de9 100644
--- a/test/sparse_basic.cpp
+++ b/test/sparse_basic.cpp
@@ -193,6 +193,12 @@
     // sparse cwise* dense
     VERIFY_IS_APPROX(m3.cwiseProduct(refM4), refM3.cwiseProduct(refM4));
 //     VERIFY_IS_APPROX(m3.cwise()/refM4, refM3.cwise()/refM4);
+
+    // test aliasing
+    VERIFY_IS_APPROX((m1 = -m1), (refM1 = -refM1));
+    VERIFY_IS_APPROX((m1 = m1.transpose()), (refM1 = refM1.transpose().eval()));
+    VERIFY_IS_APPROX((m1 = -m1.transpose()), (refM1 = -refM1.transpose().eval()));
+    VERIFY_IS_APPROX((m1 += -m1), (refM1 += -refM1));
   }
 
   // test transpose