[libcxx] r283983 - Protect special members of NullBase archetype to avoid exposing them

[Eric Fiselier via cfe-commits]

Author: ericwf
Date: Wed Oct 12 03:09:22 2016
New Revision: 283983

URL: http://llvm.org/viewvc/llvm-project?rev=283983&view=rev
Log:
Protect special members of NullBase archetype to avoid exposing them

Modified:
    libcxx/trunk/test/support/archetypes.hpp

Modified: libcxx/trunk/test/support/archetypes.hpp
URL: http://llvm.org/viewvc/llvm-project/libcxx/trunk/test/support/archetypes.hpp?rev=283983&r1=283982&r2=283983&view=diff
==============================================================================
--- libcxx/trunk/test/support/archetypes.hpp (original)
+++ libcxx/trunk/test/support/archetypes.hpp Wed Oct 12 03:09:22 2016
@@ -13,7 +13,14 @@ namespace ArchetypeBases {
 template <bool, class T>
 struct DepType : T {};
 
-struct NullBase {};
+struct NullBase {
+protected:
+  NullBase() = default;
+  NullBase(NullBase const&) = default;
+  NullBase& operator=(NullBase const&) = default;
+  NullBase(NullBase &&) = default;
+  NullBase& operator=(NullBase &&) = default;
+};
 
 template <class Derived, bool Explicit = false>
 struct TestBase {
@@ -66,7 +73,7 @@ struct TestBase {
         ++alive; ++constructed; ++value_constructed;
     }
     template <bool Dummy = true, typename std::enable_if<Dummy && !Explicit, bool>::type = true>
-    TestBase(std::initializer_list<int>& il, int y = 0) noexcept : value(il.size()) {
+    explicit TestBase(std::initializer_list<int>& il, int y = 0) noexcept : value(il.size()) {
         ++alive; ++constructed; ++value_constructed;
     }
     TestBase& operator=(int xvalue) noexcept {
@@ -79,11 +86,11 @@ protected:
       assert(value != -999); assert(alive > 0);
       --alive; ++destroyed; value = -999;
     }
-    TestBase(TestBase const& o) noexcept : value(o.value) {
+    explicit TestBase(TestBase const& o) noexcept : value(o.value) {
         assert(o.value != -1); assert(o.value != -999);
         ++alive; ++constructed; ++copy_constructed;
     }
-    TestBase(TestBase && o) noexcept : value(o.value) {
+    explicit TestBase(TestBase && o) noexcept : value(o.value) {
         assert(o.value != -1); assert(o.value != -999);
         ++alive; ++constructed; ++move_constructed;
         o.value = -1;