[libc++][test] Silence MSVC deprecation warnings

... for implicitly-generated copy constructors and copy assignment operators.

Differential Revision: https://reviews.llvm.org/D144694

Author: CaseyCarter

libcxx/test/std/utilities/any/any.class/any.modifiers/emplace.pass.cpp

@@ -25,9 +25,11 @@
 #include "test_macros.h"
 
 struct Tracked {
-  static int count;
-  Tracked()  {++count;}
-  ~Tracked() { --count; }
+    static int count;
+    Tracked() { ++count; }
+    Tracked(Tracked const&) noexcept { ++count; }
+    Tracked& operator=(Tracked const&) = default;
+    ~Tracked() { --count; }
 };
 int Tracked::count = 0;
 

libcxx/test/std/utilities/optional/optional.object/optional.object.assign/emplace.pass.cpp

@@ -40,6 +40,8 @@ class Y
     static bool dtor_called;
     Y() = default;
     Y(int) { TEST_THROW(6);}
+    Y(const Y&) = default;
+    Y& operator=(const Y&) = default;
     ~Y() {dtor_called = true;}
 };
 

libcxx/test/std/utilities/optional/optional.object/optional.object.assign/emplace_initializer_list.pass.cpp

@@ -31,6 +31,8 @@ class X
     constexpr X(int i, bool& dtor_called) : i_(i), dtor_called_(&dtor_called) {}
     constexpr X(std::initializer_list<int> il, bool& dtor_called)
     : i_(il.begin()[0]), j_(il.begin()[1]), dtor_called_(&dtor_called) {}
+    X(const X&) = default;
+    X& operator=(const X&) = default;
     TEST_CONSTEXPR_CXX20 ~X() {*dtor_called_ = true;}
 
     friend constexpr bool operator==(const X& x, const X& y)
@@ -60,6 +62,8 @@ class Z
     Z(int i) : i_(i) {}
     Z(std::initializer_list<int> il) : i_(il.begin()[0]), j_(il.begin()[1])
         { TEST_THROW(6);}
+    Z(const Z&) = default;
+    Z& operator=(const Z&) = default;
     ~Z() {dtor_called = true;}
 
     friend bool operator==(const Z& x, const Z& y)

libcxx/test/std/utilities/optional/optional.object/optional.object.dtor/dtor.pass.cpp

@@ -29,6 +29,8 @@ class X
 public:
     static bool dtor_called;
     X() = default;
+    X(const X&) = default;
+    X& operator=(const X&) = default;
     ~X() {dtor_called = true;}
 };
 

libcxx/test/std/utilities/optional/optional.object/optional.object.mod/reset.pass.cpp

@@ -23,6 +23,9 @@ using std::optional;
 struct X
 {
     static bool dtor_called;
+    X() = default;
+    X(const X&) = default;
+    X& operator=(const X&) = default;
     ~X() {dtor_called = true;}
 };