From efd9867ff0e8df23016ac6c9828d0d7bf8bec1b1 Mon Sep 17 00:00:00 2001
From: Christoph Hertzberg <chtz@informatik.uni-bremen.de>
Date: Tue, 24 Sep 2019 11:09:58 +0200
Subject: bug #1746: Removed implementation of standard copy-constructor and
 standard copy-assign-operator from PermutationMatrix and Transpositions to
 allow malloc-less std::move. Added unit-test to rvalue_types

---
 test/rvalue_types.cpp | 74 +++++++++++++++++++++++++++++++++++++++++----------
 1 file changed, 60 insertions(+), 14 deletions(-)

(limited to 'test/rvalue_types.cpp')

diff --git a/test/rvalue_types.cpp b/test/rvalue_types.cpp
index 5f52fb3bc..1e1f8560a 100644
--- a/test/rvalue_types.cpp
+++ b/test/rvalue_types.cpp
@@ -7,6 +7,8 @@
 // Public License v. 2.0. If a copy of the MPL was not distributed
 // with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
+#define EIGEN_RUNTIME_NO_MALLOC
+
 #include "main.h"
 
 #include <Eigen/Core>
@@ -24,41 +26,85 @@ void rvalue_copyassign(const MatrixType& m)
   MatrixType tmp = m;
   UIntPtr src_address = reinterpret_cast<UIntPtr>(tmp.data());
   
+  Eigen::internal::set_is_malloc_allowed(false); // moving from an rvalue reference shall never allocate
   // move the temporary to n
   MatrixType n = std::move(tmp);
   UIntPtr dst_address = reinterpret_cast<UIntPtr>(n.data());
-
   if (MatrixType::RowsAtCompileTime==Dynamic|| MatrixType::ColsAtCompileTime==Dynamic)
   {
     // verify that we actually moved the guts
     VERIFY_IS_EQUAL(src_address, dst_address);
+    VERIFY_IS_EQUAL(tmp.size(), 0);
+    VERIFY_IS_EQUAL(reinterpret_cast<UIntPtr>(tmp.data()), UIntPtr(0));
   }
 
   // verify that the content did not change
   Scalar abs_diff = (m-n).array().abs().sum();
   VERIFY_IS_EQUAL(abs_diff, Scalar(0));
+  Eigen::internal::set_is_malloc_allowed(true);
+}
+template<typename TranspositionsType>
+void rvalue_transpositions(Index rows)
+{
+  typedef typename TranspositionsType::IndicesType PermutationVectorType;
+
+  PermutationVectorType vec;
+  randomPermutationVector(vec, rows);
+  TranspositionsType t0(vec);
+
+  Eigen::internal::set_is_malloc_allowed(false); // moving from an rvalue reference shall never allocate
+
+  UIntPtr t0_address = reinterpret_cast<UIntPtr>(t0.indices().data());
+
+  // Move constructors:
+  TranspositionsType t1 = std::move(t0);
+  UIntPtr t1_address = reinterpret_cast<UIntPtr>(t1.indices().data());
+  VERIFY_IS_EQUAL(t0_address, t1_address);
+  // t0 must be de-allocated:
+  VERIFY_IS_EQUAL(t0.size(), 0);
+  VERIFY_IS_EQUAL(reinterpret_cast<UIntPtr>(t0.indices().data()), UIntPtr(0));
+
+
+  // Move assignment:
+  t0 = std::move(t1);
+  t0_address = reinterpret_cast<UIntPtr>(t0.indices().data());
+  VERIFY_IS_EQUAL(t0_address, t1_address);
+  // t1 must be de-allocated:
+  VERIFY_IS_EQUAL(t1.size(), 0);
+  VERIFY_IS_EQUAL(reinterpret_cast<UIntPtr>(t1.indices().data()), UIntPtr(0));
+
+  Eigen::internal::set_is_malloc_allowed(true);
 }
 #else
 template <typename MatrixType>
 void rvalue_copyassign(const MatrixType&) {}
+template<typename TranspositionsType>
+void rvalue_transpositions(Index) {}
 #endif
 
 EIGEN_DECLARE_TEST(rvalue_types)
 {
-  CALL_SUBTEST_1(rvalue_copyassign( MatrixXf::Random(50,50).eval() ));
-  CALL_SUBTEST_1(rvalue_copyassign( ArrayXXf::Random(50,50).eval() ));
+  for(int i = 0; i < g_repeat; i++) {
+    CALL_SUBTEST_1(rvalue_copyassign( MatrixXf::Random(50,50).eval() ));
+    CALL_SUBTEST_1(rvalue_copyassign( ArrayXXf::Random(50,50).eval() ));
 
-  CALL_SUBTEST_1(rvalue_copyassign( Matrix<float,1,Dynamic>::Random(50).eval() ));
-  CALL_SUBTEST_1(rvalue_copyassign( Array<float,1,Dynamic>::Random(50).eval() ));
+    CALL_SUBTEST_1(rvalue_copyassign( Matrix<float,1,Dynamic>::Random(50).eval() ));
+    CALL_SUBTEST_1(rvalue_copyassign( Array<float,1,Dynamic>::Random(50).eval() ));
 
-  CALL_SUBTEST_1(rvalue_copyassign( Matrix<float,Dynamic,1>::Random(50).eval() ));
-  CALL_SUBTEST_1(rvalue_copyassign( Array<float,Dynamic,1>::Random(50).eval() ));
-  
-  CALL_SUBTEST_2(rvalue_copyassign( Array<float,2,1>::Random().eval() ));
-  CALL_SUBTEST_2(rvalue_copyassign( Array<float,3,1>::Random().eval() ));
-  CALL_SUBTEST_2(rvalue_copyassign( Array<float,4,1>::Random().eval() ));
+    CALL_SUBTEST_1(rvalue_copyassign( Matrix<float,Dynamic,1>::Random(50).eval() ));
+    CALL_SUBTEST_1(rvalue_copyassign( Array<float,Dynamic,1>::Random(50).eval() ));
 
-  CALL_SUBTEST_2(rvalue_copyassign( Array<float,2,2>::Random().eval() ));
-  CALL_SUBTEST_2(rvalue_copyassign( Array<float,3,3>::Random().eval() ));
-  CALL_SUBTEST_2(rvalue_copyassign( Array<float,4,4>::Random().eval() ));
+    CALL_SUBTEST_2(rvalue_copyassign( Array<float,2,1>::Random().eval() ));
+    CALL_SUBTEST_2(rvalue_copyassign( Array<float,3,1>::Random().eval() ));
+    CALL_SUBTEST_2(rvalue_copyassign( Array<float,4,1>::Random().eval() ));
+
+    CALL_SUBTEST_2(rvalue_copyassign( Array<float,2,2>::Random().eval() ));
+    CALL_SUBTEST_2(rvalue_copyassign( Array<float,3,3>::Random().eval() ));
+    CALL_SUBTEST_2(rvalue_copyassign( Array<float,4,4>::Random().eval() ));
+  
+    CALL_SUBTEST_3((rvalue_transpositions<PermutationMatrix<Dynamic, Dynamic, int> >(internal::random<int>(1,EIGEN_TEST_MAX_SIZE))));
+    CALL_SUBTEST_3((rvalue_transpositions<PermutationMatrix<Dynamic, Dynamic, Index> >(internal::random<int>(1,EIGEN_TEST_MAX_SIZE))));
+    CALL_SUBTEST_4((rvalue_transpositions<Transpositions<Dynamic, Dynamic, int> >(internal::random<int>(1,EIGEN_TEST_MAX_SIZE))));
+    CALL_SUBTEST_4((rvalue_transpositions<Transpositions<Dynamic, Dynamic, Index> >(internal::random<int>(1,EIGEN_TEST_MAX_SIZE))));
+  }
 }
-- 
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