Remove memory leaks in libstdc++ testsuite

	* testsuite/18_support/new_delete_placement.cc: Don't allocate (and
	leak) memory for arguments to placement delete.
	* testsuite/20_util/addressof/1.cc: Don't leak memory.
	* testsuite/22_locale/locale/global_locale_objects/3.cc: Likewise.
	* testsuite/23_containers/unordered_multimap/insert/55028-debug.cc:
	Likewise.

From-SVN: r238607

libstdc++-v3/ChangeLog

+2016-07-21  Jonathan Wakely  <jwakely@redhat.com>
+
+	* testsuite/18_support/new_delete_placement.cc: Don't allocate (and
+	leak) memory for arguments to placement delete.
+	* testsuite/20_util/addressof/1.cc: Don't leak memory.
+	* testsuite/22_locale/locale/global_locale_objects/3.cc: Likewise.
+	* testsuite/23_containers/unordered_multimap/insert/55028-debug.cc:
+	Likewise.
+
 2016-07-20  Jonathan Wakely  <jwakely@redhat.com>
 
 	* doc/xml/manual/intro.xml: Document DR 2684 status.

libstdc++-v3/testsuite/18_support/new_delete_placement.cc

@@ -25,11 +25,11 @@
 // libstdc++/7286
 void test01()
 {
-  void* pc = new char;
-  void* pa = new char[10];
+  char c = 'c';
+  void* p = &c;
   void* tmp = 0;
-  operator delete(pc, tmp);
-  operator delete[](pa, tmp);
+  operator delete(p, tmp);
+  operator delete[](p, tmp);
 }
 
 int main()

libstdc++-v3/testsuite/20_util/addressof/1.cc

@@ -41,6 +41,9 @@ void test01()
   VERIFY( std::addressof(o2) == ao2 );
 
   VERIFY( std::addressof(f1) == &f1 );
+
+  delete ao1;
+  delete ao2;
 }
 
 int main()

libstdc++-v3/testsuite/22_locale/locale/global_locale_objects/3.cc

@@ -73,13 +73,15 @@ void test03()
     VERIFY( loc04 == global_orig );
   }
 
-  // 2: Not destroyed when out of scope, deliberately leaked.
+  // 2: Not destroyed when out of scope, deliberately "leaked".
+  const facet_type* ptr = 0;
   {
     {
       {
 	VERIFY( counter == 0 );
 	{
-	  locale loc01(locale::classic(), new facet_type(1));
+          ptr = new facet_type(1);
+	  locale loc01(locale::classic(), ptr);
 	  VERIFY( counter == 1 );
 	  global_orig = locale::global(loc01);
 	  name = loc01.name();
@@ -101,6 +103,9 @@ void test03()
   }
   VERIFY( counter == 1 );
 
+  // Clean up.
+  delete ptr;
+
   // Restore global settings.
   locale::global(global_orig);
 }

libstdc++-v3/testsuite/23_containers/unordered_multimap/insert/55028-debug.cc

@@ -30,7 +30,7 @@ void test()
   // using MyMap = std::multimap<std::string, MyType *>; // works
   using MyMap = std::unordered_multimap<std::string, MyType*>; // fails to link
   MyMap m;
-  m.insert(std::make_pair(std::string("blah"), new MyType));
+  m.insert(std::make_pair(std::string("blah"), (MyType*)nullptr));
 }
 
 int main()