vector.tcc (vector<>operator=(const vector<>&): Reset pointers after deallocation when memory can be reused.

2013-03-08  François Dumont  <fdumont@gcc.gnu.org>

	* include/bits/vector.tcc (vector<>operator=(const vector<>&):
	Reset pointers after deallocation when memory can be reused.
	* testsuite/23_containers/vector/allocator/minimal.cc: Insert
	elements to really challenge C++11 allocator integration.
	* testsuite/23_containers/vector/allocator/copy.cc: Likewise.
	* testsuite/23_containers/vector/allocator/copy_assign.cc:
	Likewise.
	* testsuite/23_containers/vector/allocator/move_assign.cc:
	Likewise.
	* testsuite/23_containers/vector/allocator/swap.cc: Likewise and
	swap vector back before checks on memory/personality mapping are
	performed.
	* testsuite/23_containers/forward_list/allocator/minimal.cc:
	Insert element to really challenge C++11 allocator integration.
	* testsuite/23_containers/forward_list/allocator/copy.cc:
	Likewise.
	* testsuite/23_containers/forward_list/allocator/copy_assign.cc:
	Likewise.
	* testsuite/23_containers/forward_list/allocator/move_assign.cc:
	Likewise.
	* testsuite/23_containers/forward_list/allocator/swap.cc: Likewise
	and swap forward_list back before checks on memory/personality
	mapping are performed.

From-SVN: r196557

libstdc++-v3/ChangeLog

@@ -1,3 +1,29 @@
+2013-03-08  François Dumont  <fdumont@gcc.gnu.org>
+
+	* include/bits/vector.tcc (vector<>operator=(const vector<>&):
+	Reset pointers after deallocation when memory can be reused.
+	* testsuite/23_containers/vector/allocator/minimal.cc: Insert
+	elements to really challenge C++11 allocator integration.
+	* testsuite/23_containers/vector/allocator/copy.cc: Likewise.
+	* testsuite/23_containers/vector/allocator/copy_assign.cc:
+	Likewise.
+	* testsuite/23_containers/vector/allocator/move_assign.cc:
+	Likewise.
+	* testsuite/23_containers/vector/allocator/swap.cc: Likewise and
+	swap vector back before checks on memory/personality mapping are
+	performed.
+	* testsuite/23_containers/forward_list/allocator/minimal.cc:
+	Insert element to really challenge C++11 allocator integration.
+	* testsuite/23_containers/forward_list/allocator/copy.cc:
+	Likewise.
+	* testsuite/23_containers/forward_list/allocator/copy_assign.cc:
+	Likewise.
+	* testsuite/23_containers/forward_list/allocator/move_assign.cc:
+	Likewise.
+	* testsuite/23_containers/forward_list/allocator/swap.cc: Likewise
+	and swap forward_list back before checks on memory/personality
+	mapping are performed.
+
 2013-03-07  Jakub Jelinek  <jakub@redhat.com>
 
 	* config/abi/post/i386-linux-gnu/baseline_symbols.txt: Update.

libstdc++-v3/include/bits/vector.tcc

@@ -173,6 +173,9 @@ _GLIBCXX_BEGIN_NAMESPACE_CONTAINER
 		  _M_deallocate(this->_M_impl._M_start,
 				this->_M_impl._M_end_of_storage
 				- this->_M_impl._M_start);
+		  this->_M_impl._M_start = nullptr;
+		  this->_M_impl._M_finish = nullptr;
+		  this->_M_impl._M_end_of_storage = nullptr;
 		}
 	      std::__alloc_on_copy(_M_get_Tp_allocator(),
 				   __x._M_get_Tp_allocator());

libstdc++-v3/testsuite/23_containers/forward_list/allocator/copy.cc

@@ -31,6 +31,7 @@ void test01()
   typedef propagating_allocator<T, false> alloc_type;
   typedef std::forward_list<T, alloc_type> test_type;
   test_type v1(alloc_type(1));
+  v1.push_front(T());
   test_type v2(v1);
   VERIFY(1 == v1.get_allocator().get_personality());
   VERIFY(0 == v2.get_allocator().get_personality());
@@ -42,6 +43,7 @@ void test02()
   typedef propagating_allocator<T, true> alloc_type;
   typedef std::forward_list<T, alloc_type> test_type;
   test_type v1(alloc_type(1));
+  v1.push_front(T());
   test_type v2(v1);
   VERIFY(1 == v1.get_allocator().get_personality());
   VERIFY(1 == v2.get_allocator().get_personality());

libstdc++-v3/testsuite/23_containers/forward_list/allocator/copy_assign.cc

@@ -31,7 +31,9 @@ void test01()
   typedef propagating_allocator<T, false> alloc_type;
   typedef std::forward_list<T, alloc_type> test_type;
   test_type v1(alloc_type(1));
+  v1.push_front(T());
   test_type v2(alloc_type(2));
+  v2.push_front(T());
   v2 = v1;
   VERIFY(1 == v1.get_allocator().get_personality());
   VERIFY(2 == v2.get_allocator().get_personality());
@@ -43,7 +45,9 @@ void test02()
   typedef propagating_allocator<T, true> alloc_type;
   typedef std::forward_list<T, alloc_type> test_type;
   test_type v1(alloc_type(1));
+  v1.push_front(T());
   test_type v2(alloc_type(2));
+  v2.push_front(T());
   v2 = v1;
   VERIFY(1 == v1.get_allocator().get_personality());
   VERIFY(1 == v2.get_allocator().get_personality());

libstdc++-v3/testsuite/23_containers/forward_list/allocator/minimal.cc

@@ -37,6 +37,7 @@ void test01()
   typedef std::allocator_traits<alloc_type> traits_type;
   typedef std::forward_list<T, alloc_type> test_type;
   test_type v(alloc_type{});
+  v.push_front(T());
   VERIFY( v.max_size() == traits_type::max_size(v.get_allocator()) );
 }
 

libstdc++-v3/testsuite/23_containers/forward_list/allocator/move_assign.cc

@@ -31,7 +31,9 @@ void test01()
   typedef propagating_allocator<T, false> alloc_type;
   typedef std::forward_list<T, alloc_type> test_type;
   test_type v1(alloc_type(1));
+  v1.push_front(T());
   test_type v2(alloc_type(2));
+  v2.push_front(T());
   v2 = std::move(v1);
   VERIFY(1 == v1.get_allocator().get_personality());
   VERIFY(2 == v2.get_allocator().get_personality());
@@ -43,7 +45,9 @@ void test02()
   typedef propagating_allocator<T, true> alloc_type;
   typedef std::forward_list<T, alloc_type> test_type;
   test_type v1(alloc_type(1));
+  v1.push_front(T());
   test_type v2(alloc_type(2));
+  v2.push_front(T());
   v2 = std::move(v1);
   VERIFY(0 == v1.get_allocator().get_personality());
   VERIFY(1 == v2.get_allocator().get_personality());

libstdc++-v3/testsuite/23_containers/forward_list/allocator/swap.cc

@@ -48,10 +48,14 @@ void test01()
   typedef propagating_allocator<T, false> alloc_type;
   typedef std::forward_list<T, alloc_type> test_type;
   test_type v1(alloc_type(1));
+  v1.push_front(T());
   test_type v2(alloc_type(2));
+  v2.push_front(T());
   std::swap(v1, v2);
   VERIFY(1 == v1.get_allocator().get_personality());
   VERIFY(2 == v2.get_allocator().get_personality());
+  // swap back so assertions in uneq_allocator::deallocate don't fail
+  std::swap(v1, v2);
 }
 
 void test02()
@@ -60,7 +64,9 @@ void test02()
   typedef propagating_allocator<T, true> alloc_type;
   typedef std::forward_list<T, alloc_type> test_type;
   test_type v1(alloc_type(1));
+  v1.push_front(T());
   test_type v2(alloc_type(2));
+  v2.push_front(T());
   std::swap(v1, v2);
   VERIFY(2 == v1.get_allocator().get_personality());
   VERIFY(1 == v2.get_allocator().get_personality());

libstdc++-v3/testsuite/23_containers/vector/allocator/copy.cc

@@ -31,6 +31,7 @@ void test01()
   typedef propagating_allocator<T, false> alloc_type;
   typedef std::vector<T, alloc_type> test_type;
   test_type v1(alloc_type(1));
+  v1.push_back(T());
   test_type v2(v1);
   VERIFY(1 == v1.get_allocator().get_personality());
   VERIFY(0 == v2.get_allocator().get_personality());
@@ -42,6 +43,7 @@ void test02()
   typedef propagating_allocator<T, true> alloc_type;
   typedef std::vector<T, alloc_type> test_type;
   test_type v1(alloc_type(1));
+  v1.push_back(T());
   test_type v2(v1);
   VERIFY(1 == v1.get_allocator().get_personality());
   VERIFY(1 == v2.get_allocator().get_personality());

libstdc++-v3/testsuite/23_containers/vector/allocator/copy_assign.cc

@@ -31,7 +31,9 @@ void test01()
   typedef propagating_allocator<T, false> alloc_type;
   typedef std::vector<T, alloc_type> test_type;
   test_type v1(alloc_type(1));
+  v1.push_back(T());
   test_type v2(alloc_type(2));
+  v2.push_back(T());
   v2 = v1;
   VERIFY(1 == v1.get_allocator().get_personality());
   VERIFY(2 == v2.get_allocator().get_personality());
@@ -43,7 +45,9 @@ void test02()
   typedef propagating_allocator<T, true> alloc_type;
   typedef std::vector<T, alloc_type> test_type;
   test_type v1(alloc_type(1));
+  v1.push_back(T());
   test_type v2(alloc_type(2));
+  v2.push_back(T());
   v2 = v1;
   VERIFY(1 == v1.get_allocator().get_personality());
   VERIFY(1 == v2.get_allocator().get_personality());

libstdc++-v3/testsuite/23_containers/vector/allocator/minimal.cc

@@ -35,6 +35,7 @@ void test01()
   typedef std::allocator_traits<alloc_type> traits_type;
   typedef std::vector<T, alloc_type> test_type;
   test_type v(alloc_type{});
+  v.push_back(T());
   VERIFY( v.max_size() == traits_type::max_size(v.get_allocator()) );
 }
 

libstdc++-v3/testsuite/23_containers/vector/allocator/move_assign.cc

@@ -31,7 +31,9 @@ void test01()
   typedef propagating_allocator<T, false> alloc_type;
   typedef std::vector<T, alloc_type> test_type;
   test_type v1(alloc_type(1));
+  v1.push_back(T());
   test_type v2(alloc_type(2));
+  v2.push_back(T());
   v2 = std::move(v1);
   VERIFY(1 == v1.get_allocator().get_personality());
   VERIFY(2 == v2.get_allocator().get_personality());
@@ -43,8 +45,10 @@ void test02()
   typedef propagating_allocator<T, true> alloc_type;
   typedef std::vector<T, alloc_type> test_type;
   test_type v1(alloc_type(1));
+  v1.push_back(T());
   test_type v2(alloc_type(2));
   v2 = std::move(v1);
+  v2.push_back(T());
   VERIFY(0 == v1.get_allocator().get_personality());
   VERIFY(1 == v2.get_allocator().get_personality());
 }

libstdc++-v3/testsuite/23_containers/vector/allocator/swap.cc

@@ -48,10 +48,14 @@ void test01()
   typedef propagating_allocator<T, false> alloc_type;
   typedef std::vector<T, alloc_type> test_type;
   test_type v1(alloc_type(1));
+  v1.push_back(T());
   test_type v2(alloc_type(2));
+  v2.push_back(T());
   std::swap(v1, v2);
   VERIFY(1 == v1.get_allocator().get_personality());
   VERIFY(2 == v2.get_allocator().get_personality());
+  // swap back so assertions in uneq_allocator::deallocate don't fail
+  std::swap(v1, v2);
 }
 
 void test02()