vendor/libc++/libc++-release_370-r246257

1 files changed, 89 insertions, 0 deletions

diff --git a/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.targ/target.pass.cpp b/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.targ/target.pass.cpp
new file mode 100644
index 000000000000..53476a274735
--- /dev/null
+++ b/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.targ/target.pass.cpp
@@ -0,0 +1,89 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// class function<R(ArgTypes...)>
+
+// template<typename T>
+//   requires Callable<T, ArgTypes...> && Convertible<Callable<T, ArgTypes...>::result_type, R>
+//   T*
+//   target();
+// template<typename T>
+//   requires Callable<T, ArgTypes...> && Convertible<Callable<T, ArgTypes...>::result_type, R>
+//   const T*
+//   target() const;
+
+#include <functional>
+#include <new>
+#include <cstdlib>
+#include <cassert>
+
+class A
+{
+    int data_[10];
+public:
+    static int count;
+
+    A()
+    {
+        ++count;
+        for (int i = 0; i < 10; ++i)
+            data_[i] = i;
+    }
+
+    A(const A&) {++count;}
+
+    ~A() {--count;}
+
+    int operator()(int i) const
+    {
+        for (int j = 0; j < 10; ++j)
+            i += data_[j];
+        return i;
+    }
+
+    int foo(int) const {return 1;}
+};
+
+int A::count = 0;
+
+int g(int) {return 0;}
+
+int main()
+{
+    {
+    std::function<int(int)> f = A();
+    assert(A::count == 1);
+    assert(f.target<A>());
+    assert(f.target<int(*)(int)>() == 0);
+    }
+    assert(A::count == 0);
+    {
+    std::function<int(int)> f = g;
+    assert(A::count == 0);
+    assert(f.target<int(*)(int)>());
+    assert(f.target<A>() == 0);
+    }
+    assert(A::count == 0);
+    {
+    const std::function<int(int)> f = A();
+    assert(A::count == 1);
+    assert(f.target<A>());
+    assert(f.target<int(*)(int)>() == 0);
+    }
+    assert(A::count == 0);
+    {
+    const std::function<int(int)> f = g;
+    assert(A::count == 0);
+    assert(f.target<int(*)(int)>());
+    assert(f.target<A>() == 0);
+    }
+    assert(A::count == 0);
+}