Test that we correctly deal with multiple copy constructors when detecting

non-trivial special members for varargs calls.

llvm-svn: 168476

clang/test/CXX/expr/expr.post/expr.call/p7-0x.cpp

@@ -9,11 +9,22 @@ struct X2 {
   ~X2();
 };
 
+struct X3 {
+  X3(const X3&) = default;
+};
+
+struct X4 {
+  X4(const X4&) = default;
+  X4(X4&);
+};
+
 void vararg(...);
 
-void f(X1 x1, X2 x2) {
-  vararg(x1); // okay
+void f(X1 x1, X2 x2, X3 x3, X4 x4) {
+  vararg(x1); // OK
   vararg(x2); // expected-error{{cannot pass object of non-trivial type 'X2' through variadic function; call will abort at runtime}}
+  vararg(x3); // OK
+  vararg(x4); // expected-error{{cannot pass object of non-trivial type 'X4' through variadic function; call will abort at runtime}}
 }