patch by Jesse Towner, and bug fix by Sebastian Redl

git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@110724 91177308-0d34-0410-b5e6-96231b3b80d8

test/language.support/support.types/nullptr_t.pass.cpp

@@ -24,9 +24,10 @@ int main()
                   "sizeof(std::nullptr_t) == sizeof(void*)");
     A* p = 0;
     assert(p == nullptr);
+    assert(nullptr == p);
+#if !((__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ <= 5))
+    // GCC 4.2 through 4.5 can't handle this
     void (A::*pmf)() = 0;
-#ifdef __clang__
-    // GCC 4.2 can't handle this
     assert(pmf == nullptr);
 #endif
     int A::*pmd = 0;
@@ -41,4 +42,20 @@ int main()
     assert(!(nullptr != nullptr));
     assert(!(nullptr < nullptr));
     assert(!(nullptr > nullptr));
+    assert(!(&a1 == nullptr));
+    assert(!(nullptr == &a1));
+    assert(&a1 != nullptr);
+    assert(nullptr != &a1);
+    assert(nullptr < &a1);
+    assert(nullptr <= &a1);
+    assert(!(nullptr < p));
+    assert(nullptr <= p);
+    assert(!(&a1 < nullptr));
+    assert(!(&a1 <= nullptr));
+    assert(!(p < nullptr));
+    assert(p <= nullptr);
+    assert(!(nullptr > &a1));
+    assert(!(nullptr >= &a1));
+    assert(!(nullptr > p));
+    assert(nullptr >= p);
 }