Initial commit

module/jni/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/addressof.pass.cpp

@@ -0,0 +1,32 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// class function<R(ArgTypes...)>
+
+// This test runs in C++03, but we have deprecated using std::function in C++03.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX03_FUNCTION
+
+// Make sure we can use std::function with a type that has a hostile overload
+// of operator&().
+
+#include <functional>
+#include <cassert>
+
+#include "operator_hijacker.h"
+
+struct TrapAddressof : operator_hijacker {
+    int operator()() const { return 1; }
+};
+
+int main(int, char**) {
+    std::function<int()> f = TrapAddressof();
+    assert(f() == 1);
+    return 0;
+}

module/jni/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/derive_from.compile.fail.cpp

@@ -0,0 +1,26 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+// XFAIL: c++11, c++14
+
+// <functional>
+
+#include <functional>
+#include <type_traits>
+
+#include "test_macros.h"
+
+struct S : public std::function<void()> { using function::function; };
+
+int main(int, char**) {
+   S f1( [](){} );
+   S f2(std::allocator_arg, std::allocator<int>{}, f1);
+
+  return 0;
+}

module/jni/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/derive_from.pass.cpp

@@ -0,0 +1,31 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+
+// <functional>
+
+// See https://llvm.org/PR20002
+
+#include <functional>
+#include <type_traits>
+
+#include "test_macros.h"
+
+using Fn = std::function<void()>;
+struct S : public std::function<void()> { using function::function; };
+
+int main(int, char**) {
+    S s( [](){} );
+    S f1( s );
+#if TEST_STD_VER <= 14
+    S f2(std::allocator_arg, std::allocator<int>{}, s);
+#endif
+
+  return 0;
+}

module/jni/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.alg/swap.pass.cpp

@@ -0,0 +1,140 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// class function<R(ArgTypes...)>
+
+// template <MoveConstructible  R, MoveConstructible ... ArgTypes>
+//   void swap(function<R(ArgTypes...)>&, function<R(ArgTypes...)>&) noexcept;
+
+// This test runs in C++03, but we have deprecated using std::function in C++03.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX03_FUNCTION
+
+#include <functional>
+#include <cstdlib>
+#include <cassert>
+
+#include "test_macros.h"
+#include "count_new.h"
+
+class A
+{
+    int data_[10];
+public:
+    static int count;
+
+    explicit A(int j)
+    {
+        ++count;
+        data_[0] = j;
+    }
+
+    A(const A& a)
+    {
+        ++count;
+        for (int i = 0; i < 10; ++i)
+            data_[i] = a.data_[i];
+    }
+
+    ~A() {--count;}
+
+    int operator()(int i) const
+    {
+        for (int j = 0; j < 10; ++j)
+            i += data_[j];
+        return i;
+    }
+
+    int id() const {return data_[0];}
+};
+
+int A::count = 0;
+
+int g(int) {return 0;}
+int h(int) {return 1;}
+
+int main(int, char**)
+{
+    globalMemCounter.reset();
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    {
+    std::function<int(int)> f1 = A(1);
+    std::function<int(int)> f2 = A(2);
+#if TEST_STD_VER >= 11
+    static_assert(noexcept(swap(f1, f2)), "" );
+#endif
+    assert(A::count == 2);
+    assert(globalMemCounter.checkOutstandingNewEq(2));
+    RTTI_ASSERT(f1.target<A>()->id() == 1);
+    RTTI_ASSERT(f2.target<A>()->id() == 2);
+    swap(f1, f2);
+    assert(A::count == 2);
+    assert(globalMemCounter.checkOutstandingNewEq(2));
+    RTTI_ASSERT(f1.target<A>()->id() == 2);
+    RTTI_ASSERT(f2.target<A>()->id() == 1);
+    }
+    assert(A::count == 0);
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    {
+    std::function<int(int)> f1 = A(1);
+    std::function<int(int)> f2 = g;
+#if TEST_STD_VER >= 11
+    static_assert(noexcept(swap(f1, f2)), "" );
+#endif
+    assert(A::count == 1);
+    assert(globalMemCounter.checkOutstandingNewEq(1));
+    RTTI_ASSERT(f1.target<A>()->id() == 1);
+    RTTI_ASSERT(*f2.target<int(*)(int)>() == g);
+    swap(f1, f2);
+    assert(A::count == 1);
+    assert(globalMemCounter.checkOutstandingNewEq(1));
+    RTTI_ASSERT(*f1.target<int(*)(int)>() == g);
+    RTTI_ASSERT(f2.target<A>()->id() == 1);
+    }
+    assert(A::count == 0);
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    {
+    std::function<int(int)> f1 = g;
+    std::function<int(int)> f2 = A(1);
+#if TEST_STD_VER >= 11
+    static_assert(noexcept(swap(f1, f2)), "" );
+#endif
+    assert(A::count == 1);
+    assert(globalMemCounter.checkOutstandingNewEq(1));
+    RTTI_ASSERT(*f1.target<int(*)(int)>() == g);
+    RTTI_ASSERT(f2.target<A>()->id() == 1);
+    swap(f1, f2);
+    assert(A::count == 1);
+    assert(globalMemCounter.checkOutstandingNewEq(1));
+    RTTI_ASSERT(f1.target<A>()->id() == 1);
+    RTTI_ASSERT(*f2.target<int(*)(int)>() == g);
+    }
+    assert(A::count == 0);
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    {
+    std::function<int(int)> f1 = g;
+    std::function<int(int)> f2 = h;
+#if TEST_STD_VER >= 11
+    static_assert(noexcept(swap(f1, f2)), "" );
+#endif
+    assert(A::count == 0);
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    RTTI_ASSERT(*f1.target<int(*)(int)>() == g);
+    RTTI_ASSERT(*f2.target<int(*)(int)>() == h);
+    swap(f1, f2);
+    assert(A::count == 0);
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    RTTI_ASSERT(*f1.target<int(*)(int)>() == h);
+    RTTI_ASSERT(*f2.target<int(*)(int)>() == g);
+    }
+    assert(A::count == 0);
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+
+  return 0;
+}

module/jni/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.cap/operator_bool.pass.cpp

@@ -0,0 +1,39 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// class function<R(ArgTypes...)>
+
+// explicit operator bool() const
+
+// This test runs in C++03, but we have deprecated using std::function in C++03.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX03_FUNCTION
+
+#include <functional>
+#include <cassert>
+#include <type_traits>
+
+#include "test_macros.h"
+
+int g(int) {return 0;}
+
+int main(int, char**)
+{
+    static_assert(std::is_constructible<bool, std::function<void()> >::value, "");
+    static_assert(!std::is_convertible<std::function<void()>, bool>::value, "");
+
+    {
+    std::function<int(int)> f;
+    assert(!f);
+    f = g;
+    assert(f);
+    }
+
+  return 0;
+}

module/jni/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/F.pass.cpp

@@ -0,0 +1,120 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// class function<R(ArgTypes...)>
+
+// function(F);
+
+// This test runs in C++03, but we have deprecated using std::function in C++03.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX03_FUNCTION
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "count_new.h"
+
+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;}
+
+#if TEST_STD_VER >= 11
+struct RValueCallable {
+    template <class ...Args>
+    void operator()(Args&&...) && {}
+};
+struct LValueCallable {
+    template <class ...Args>
+    void operator()(Args&&...) & {}
+};
+#endif
+
+int main(int, char**)
+{
+    globalMemCounter.reset();
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    {
+    std::function<int(int)> f = A();
+    assert(A::count == 1);
+    assert(globalMemCounter.checkOutstandingNewEq(1));
+    RTTI_ASSERT(f.target<A>());
+    RTTI_ASSERT(f.target<int(*)(int)>() == 0);
+    }
+    assert(A::count == 0);
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    {
+    std::function<int(int)> f = g;
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    RTTI_ASSERT(f.target<int(*)(int)>());
+    RTTI_ASSERT(f.target<A>() == 0);
+    }
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    {
+    std::function<int(int)> f = (int (*)(int))0;
+    assert(!f);
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    RTTI_ASSERT(f.target<int(*)(int)>() == 0);
+    RTTI_ASSERT(f.target<A>() == 0);
+    }
+    {
+    std::function<int(const A*, int)> f = &A::foo;
+    assert(f);
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    RTTI_ASSERT(f.target<int (A::*)(int) const>() != 0);
+    }
+    {
+      std::function<void(int)> f(&g);
+      assert(f);
+      RTTI_ASSERT(f.target<int(*)(int)>() != 0);
+      f(1);
+    }
+    {
+        std::function <void()> f(static_cast<void (*)()>(0));
+        assert(!f);
+    }
+#if TEST_STD_VER >= 11
+    {
+        using Fn = std::function<void(int, int, int)>;
+        static_assert(std::is_constructible<Fn, LValueCallable&>::value, "");
+        static_assert(std::is_constructible<Fn, LValueCallable>::value, "");
+        static_assert(!std::is_constructible<Fn, RValueCallable&>::value, "");
+        static_assert(!std::is_constructible<Fn, RValueCallable>::value, "");
+    }
+#endif
+
+  return 0;
+}

module/jni/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/F_assign.pass.cpp

@@ -0,0 +1,139 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// class function<R(ArgTypes...)>
+
+// template<class F>
+//   requires CopyConstructible<F> && Callable<F, ArgTypes..>
+//         && Convertible<Callable<F, ArgTypes...>::result_type
+//   operator=(F f);
+
+// This test runs in C++03, but we have deprecated using std::function in C++03.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX03_FUNCTION
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "count_new.h"
+
+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;}
+
+#if TEST_STD_VER >= 11
+struct RValueCallable {
+    template <class ...Args>
+    void operator()(Args&&...) && {}
+};
+struct LValueCallable {
+    template <class ...Args>
+    void operator()(Args&&...) & {}
+};
+#endif
+
+int main(int, char**)
+{
+    globalMemCounter.reset();
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    {
+    std::function<int(int)> f;
+    f = A();
+    assert(A::count == 1);
+    assert(globalMemCounter.checkOutstandingNewEq(1));
+    RTTI_ASSERT(f.target<A>());
+    RTTI_ASSERT(f.target<int(*)(int)>() == 0);
+    }
+    assert(A::count == 0);
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    {
+    std::function<int(int)> f;
+    f = g;
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    RTTI_ASSERT(f.target<int(*)(int)>());
+    RTTI_ASSERT(f.target<A>() == 0);
+    }
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    {
+    std::function<int(int)> f;
+    f = (int (*)(int))0;
+    assert(!f);
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    RTTI_ASSERT(f.target<int(*)(int)>() == 0);
+    RTTI_ASSERT(f.target<A>() == 0);
+    }
+    {
+    std::function<int(const A*, int)> f;
+    f = &A::foo;
+    assert(f);
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    RTTI_ASSERT(f.target<int (A::*)(int) const>() != 0);
+    }
+    {
+    std::function<void(int)> f;
+    f = &g;
+    assert(f);
+    RTTI_ASSERT(f.target<int(*)(int)>() != 0);
+    f(1);
+    }
+#if TEST_STD_VER >= 11
+    {
+        using Fn = std::function<void(int, int, int)>;
+        static_assert(std::is_assignable<Fn&, LValueCallable&>::value, "");
+        static_assert(std::is_assignable<Fn&, LValueCallable>::value, "");
+        static_assert(!std::is_assignable<Fn&, RValueCallable&>::value, "");
+        static_assert(!std::is_assignable<Fn&, RValueCallable>::value, "");
+    }
+    {
+        using Fn = std::function<void(int, int, int)>;
+        static_assert(std::is_assignable<Fn&, Fn&&>::value, "");
+    }
+    {
+        using F1 = std::function<void(int, int)>;
+        using F2 = std::function<void(int, int, int)>;
+        static_assert(!std::is_assignable<F1&, F2&&>::value, "");
+    }
+    {
+        using F1 = std::function<int(int, int)>;
+        using F2 = std::function<A  (int, int)>;
+        static_assert(!std::is_assignable<F1&, F2&&>::value, "");
+        static_assert(!std::is_assignable<F2&, F1&&>::value, "");
+    }
+#endif
+
+  return 0;
+}

module/jni/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/F_incomplete.pass.cpp

@@ -0,0 +1,70 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// class function<R(ArgTypes...)>
+
+// template<class F> function(F);
+
+// Allow incomplete argument types in the __is_callable check
+
+// This test runs in C++03, but we have deprecated using std::function in C++03.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX03_FUNCTION
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+struct X{
+    typedef std::function<void(X&)> callback_type;
+    virtual ~X() {}
+private:
+    callback_type _cb;
+};
+
+struct IncompleteReturnType {
+  std::function<IncompleteReturnType ()> fn;
+};
+
+
+int called = 0;
+IncompleteReturnType test_fn() {
+  ++called;
+  IncompleteReturnType I;
+  return I;
+}
+
+// See llvm.org/PR34298
+void test_pr34298()
+{
+  static_assert(std::is_copy_constructible<IncompleteReturnType>::value, "");
+  static_assert(std::is_copy_assignable<IncompleteReturnType>::value, "");
+  {
+    IncompleteReturnType X;
+    X.fn = test_fn;
+    const IncompleteReturnType& CX = X;
+    IncompleteReturnType X2 = CX;
+    assert(X2.fn);
+    assert(called == 0);
+    X2.fn();
+    assert(called == 1);
+  }
+  {
+    IncompleteReturnType Empty;
+    IncompleteReturnType X2 = Empty;
+    assert(!X2.fn);
+  }
+}
+
+int main(int, char**) {
+  test_pr34298();
+
+  return 0;
+}

module/jni/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/F_nullptr.pass.cpp

@@ -0,0 +1,251 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// class function<R(ArgTypes...)>
+
+// function(Fp);
+
+// Ensure that __not_null works for all function types.
+// See https://llvm.org/PR23589
+
+// This test runs in C++03, but we have deprecated using std::function in C++03.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX03_FUNCTION
+
+//------------------------------------------------------------------------------
+// TESTING std::function<...>::__not_null(Callable)
+//
+// Concerns:
+//  1) The call __not_null(Callable) is well formed and correct for each
+//     possible 'Callable' type category. These categories include:
+//      1a) function pointers
+//      1b) member function pointer
+//      1c) member data pointer
+//      1d) callable class type
+//      1e) lambdas
+//    Categories 1a, 1b, and 1c are 'Nullable' types. Only objects of these
+//    types can be null. The other categories are not tested here.
+//  3) '__not_null(Callable)' is well formed when the call signature includes
+//      varargs.
+//  4) '__not_null(Callable)' works for Callable types with all arities less
+//     than or equal to 3 in C++03.
+//  5) '__not_null(Callable)' works when 'Callable' is a member function
+//     pointer to a cv or ref qualified function type.
+//
+// Plan:
+//  1 For categories 1a, 1b and 1c define a set of
+//    'Callable' objects for this category. This set should include examples
+//    of arity 0, 1, 2 and possible 3 including versions with varargs as the
+//    last parameter.
+//
+//  2 For each 'Callable' object in categories 1a, 1b and 1c do the following.
+//
+//    1 Define a type 'std::function<Sig>' as 'F' where 'Sig' is compatible with
+//      the signature of the 'Callable' object.
+//
+//    2 Create an object of type 'F' using a null pointer of type 'Callable'.
+//      Check that 'F.target<Callable>()' is null.
+//
+//    3 Create an object of type 'F' that is not null. Check that
+//      'F.target<Callable>()' is not null and is equal to the original
+//      argument.
+
+#include <functional>
+#include <type_traits>
+#include <cassert>
+
+#include "test_macros.h"
+
+///////////////////////////////////////////////////////////////////////////////
+int foo() { return 42; }
+int foo(int) { return 42; }
+int foo(int, int) { return 42; }
+int foo(int, int, int) { return 42; }
+
+int foo(...) { return 42; }
+int foo(int, ...) { return 42; }
+int foo(int, int, ...) { return 42; }
+int foo(int, int, int, ...) { return 42; }
+
+///////////////////////////////////////////////////////////////////////////////
+struct MemFun03 {
+    int foo() { return 42; }
+    int foo() const { return 42; }
+    int foo() volatile { return 42; }
+    int foo() const volatile { return 42; }
+
+    int foo(int) { return 42; }
+    int foo(int) const { return 42; }
+    int foo(int) volatile { return 42; }
+    int foo(int) const volatile { return 42; }
+
+    int foo(int, int) { return 42; }
+    int foo(int, int) const { return 42; }
+    int foo(int, int) volatile { return 42; }
+    int foo(int, int) const volatile { return 42; }
+
+    int foo(int, int, int) { return 42; }
+    int foo(int, int, int) const { return 42; }
+    int foo(int, int, int) volatile { return 42; }
+    int foo(int, int, int) const volatile { return 42; }
+
+    int foo(...) { return 42; }
+    int foo(...) const { return 42; }
+    int foo(...) volatile { return 42; }
+    int foo(...) const volatile { return 42; }
+
+    int foo(int, ...) { return 42; }
+    int foo(int, ...) const { return 42; }
+    int foo(int, ...) volatile { return 42; }
+    int foo(int, ...) const volatile { return 42; }
+
+    int foo(int, int, ...) { return 42; }
+    int foo(int, int, ...) const { return 42; }
+    int foo(int, int, ...) volatile { return 42; }
+    int foo(int, int, ...) const volatile { return 42; }
+
+    int foo(int, int, int, ...) { return 42; }
+    int foo(int, int, int, ...) const { return 42; }
+    int foo(int, int, int, ...) volatile { return 42; }
+    int foo(int, int, int, ...) const volatile { return 42; }
+};
+
+#if TEST_STD_VER >= 11
+struct MemFun11 {
+    int foo() & { return 42; }
+    int foo() const & { return 42; }
+    int foo() volatile & { return 42; }
+    int foo() const volatile & { return 42; }
+
+    int foo(...) & { return 42; }
+    int foo(...) const & { return 42; }
+    int foo(...) volatile & { return 42; }
+    int foo(...) const volatile & { return 42; }
+
+    int foo() && { return 42; }
+    int foo() const && { return 42; }
+    int foo() volatile && { return 42; }
+    int foo() const volatile && { return 42; }
+
+    int foo(...) && { return 42; }
+    int foo(...) const && { return 42; }
+    int foo(...) volatile && { return 42; }
+    int foo(...) const volatile && { return 42; }
+};
+#endif // TEST_STD_VER >= 11
+
+struct MemData {
+    int foo;
+};
+
+// Create a non-null free function by taking the address of
+// &static_cast<Tp&>(foo);
+template <class Tp>
+struct Creator {
+    static Tp create() {
+        return &foo;
+    }
+};
+
+// Create a non-null member pointer.
+template <class Ret, class Class>
+struct Creator<Ret Class::*> {
+    typedef Ret Class::*ReturnType;
+    static ReturnType create() {
+        return &Class::foo;
+    }
+};
+
+template <class TestFn, class Fn>
+void test_imp() {
+    { // Check that the null value is detected
+        TestFn tf = nullptr;
+        std::function<Fn> f = tf;
+        RTTI_ASSERT(f.template target<TestFn>() == nullptr);
+    }
+    { // Check that the non-null value is detected.
+        TestFn tf = Creator<TestFn>::create();
+        assert(tf != nullptr);
+        std::function<Fn> f = tf;
+        RTTI_ASSERT(f.template target<TestFn>() != nullptr);
+        RTTI_ASSERT(*f.template target<TestFn>() == tf);
+    }
+}
+
+void test_func() {
+    test_imp<int(*)(), int()>();
+    test_imp<int(*)(...), int()>();
+    test_imp<int(*)(int), int(int)>();
+    test_imp<int(*)(int, ...), int(int)>();
+    test_imp<int(*)(int, int), int(int, int)>();
+    test_imp<int(*)(int, int, ...), int(int, int)>();
+    test_imp<int(*)(int, int, int), int(int, int, int)>();
+    test_imp<int(*)(int, int, int, ...), int(int, int, int)>();
+}
+
+void test_mf() {
+    test_imp<int(MemFun03::*)(), int(MemFun03&)>();
+    test_imp<int(MemFun03::*)(...), int(MemFun03&)>();
+    test_imp<int(MemFun03::*)() const, int(MemFun03&)>();
+    test_imp<int(MemFun03::*)(...) const, int(MemFun03&)>();
+    test_imp<int(MemFun03::*)() volatile, int(MemFun03&)>();
+    test_imp<int(MemFun03::*)(...) volatile, int(MemFun03&)>();
+    test_imp<int(MemFun03::*)() const volatile, int(MemFun03&)>();
+    test_imp<int(MemFun03::*)(...) const volatile, int(MemFun03&)>();
+
+    test_imp<int(MemFun03::*)(int), int(MemFun03&, int)>();
+    test_imp<int(MemFun03::*)(int, ...), int(MemFun03&, int)>();
+    test_imp<int(MemFun03::*)(int) const, int(MemFun03&, int)>();
+    test_imp<int(MemFun03::*)(int, ...) const, int(MemFun03&, int)>();
+    test_imp<int(MemFun03::*)(int) volatile, int(MemFun03&, int)>();
+    test_imp<int(MemFun03::*)(int, ...) volatile, int(MemFun03&, int)>();
+    test_imp<int(MemFun03::*)(int) const volatile, int(MemFun03&, int)>();
+    test_imp<int(MemFun03::*)(int, ...) const volatile, int(MemFun03&, int)>();
+
+    test_imp<int(MemFun03::*)(int, int), int(MemFun03&, int, int)>();
+    test_imp<int(MemFun03::*)(int, int, ...), int(MemFun03&, int, int)>();
+    test_imp<int(MemFun03::*)(int, int) const, int(MemFun03&, int, int)>();
+    test_imp<int(MemFun03::*)(int, int, ...) const, int(MemFun03&, int, int)>();
+    test_imp<int(MemFun03::*)(int, int) volatile, int(MemFun03&, int, int)>();
+    test_imp<int(MemFun03::*)(int, int, ...) volatile, int(MemFun03&, int, int)>();
+    test_imp<int(MemFun03::*)(int, int) const volatile, int(MemFun03&, int, int)>();
+    test_imp<int(MemFun03::*)(int, int, ...) const volatile, int(MemFun03&, int, int)>();
+
+#if TEST_STD_VER >= 11
+    test_imp<int(MemFun11::*)() &, int(MemFun11&)>();
+    test_imp<int(MemFun11::*)(...) &, int(MemFun11&)>();
+    test_imp<int(MemFun11::*)() const &, int(MemFun11&)>();
+    test_imp<int(MemFun11::*)(...) const &, int(MemFun11&)>();
+    test_imp<int(MemFun11::*)() volatile &, int(MemFun11&)>();
+    test_imp<int(MemFun11::*)(...) volatile &, int(MemFun11&)>();
+    test_imp<int(MemFun11::*)() const volatile &, int(MemFun11&)>();
+    test_imp<int(MemFun11::*)(...) const volatile &, int(MemFun11&)>();
+
+    test_imp<int(MemFun11::*)() &&, int(MemFun11&&)>();
+    test_imp<int(MemFun11::*)(...) &&, int(MemFun11&&)>();
+    test_imp<int(MemFun11::*)() const &&, int(MemFun11&&)>();
+    test_imp<int(MemFun11::*)(...) const &&, int(MemFun11&&)>();
+    test_imp<int(MemFun11::*)() volatile &&, int(MemFun11&&)>();
+    test_imp<int(MemFun11::*)(...) volatile &&, int(MemFun11&&)>();
+    test_imp<int(MemFun11::*)() const volatile &&, int(MemFun11&&)>();
+    test_imp<int(MemFun11::*)(...) const volatile &&, int(MemFun11&&)>();
+#endif
+}
+
+void test_md() {
+    test_imp<int MemData::*, int(MemData&)>();
+}
+
+int main(int, char**) {
+    test_func();
+    test_mf();
+    test_md();
+
+  return 0;
+}

module/jni/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/alloc.pass.cpp

@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+// REQUIRES: c++03 || c++11 || c++14
+
+// class function<R(ArgTypes...)>
+
+// template<class A> function(allocator_arg_t, const A&);
+//
+// This signature was removed in C++17
+
+// This test runs in C++03, but we have deprecated using std::function in C++03.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX03_FUNCTION
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    {
+    std::function<int(int)> f(std::allocator_arg, bare_allocator<int>());
+    assert(!f);
+    }
+
+  return 0;
+}

module/jni/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/alloc.verify.cpp

@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// class function<R(ArgTypes...)>
+
+// template<class A> function(allocator_arg_t, const A&);
+//
+// This signature was removed in C++17
+
+#include <functional>
+#include <cassert>
+
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    std::function<int(int)> f(std::allocator_arg, std::allocator<int>()); // expected-error {{no matching constructor for initialization of}}
+    return 0;
+}

module/jni/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/alloc_F.pass.cpp

@@ -0,0 +1,137 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+// REQUIRES: c++03 || c++11 || c++14
+
+// class function<R(ArgTypes...)>
+
+// template<class F, class A> function(allocator_arg_t, const A&, F);
+
+// This test runs in C++03, but we have deprecated using std::function in C++03.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX03_FUNCTION
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "test_allocator.h"
+#include "count_new.h"
+#include "../function_types.h"
+
+#if TEST_STD_VER >= 11
+struct RValueCallable {
+    template <class ...Args>
+    void operator()(Args&&...) && {}
+};
+struct LValueCallable {
+    template <class ...Args>
+    void operator()(Args&&...) & {}
+};
+#endif
+
+test_allocator_statistics alloc_stats;
+
+class DummyClass {};
+
+template <class FuncType, class AllocType>
+void test_FunctionObject(AllocType& alloc)
+{
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    {
+    FunctionObject target;
+    assert(FunctionObject::count == 1);
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    std::function<FuncType> f2(std::allocator_arg, alloc, target);
+    assert(FunctionObject::count == 2);
+    assert(globalMemCounter.checkOutstandingNewEq(1));
+    assert(f2.template target<FunctionObject>());
+    assert(f2.template target<FuncType>() == 0);
+    assert(f2.template target<FuncType*>() == 0);
+    }
+    assert(FunctionObject::count == 0);
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+}
+
+
+template <class FuncType, class AllocType>
+void test_FreeFunction(AllocType& alloc)
+{
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    {
+    FuncType* target = &FreeFunction;
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    std::function<FuncType> f2(std::allocator_arg, alloc, target);
+    // The allocator may not fit in the small object buffer, if we allocated
+    // check it was done via the allocator.
+    assert(globalMemCounter.checkOutstandingNewEq(alloc_stats.alloc_count));
+    assert(f2.template target<FuncType*>());
+    assert(*f2.template target<FuncType*>() == target);
+    assert(f2.template target<FuncType>() == 0);
+    assert(f2.template target<DummyClass>() == 0);
+    }
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+}
+
+template <class TargetType, class FuncType, class AllocType>
+void test_MemFunClass(AllocType& alloc)
+{
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    {
+    TargetType target = &MemFunClass::foo;
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    std::function<FuncType> f2(std::allocator_arg, alloc, target);
+    assert(globalMemCounter.checkOutstandingNewEq(alloc_stats.alloc_count));
+    assert(f2.template target<TargetType>());
+    assert(*f2.template target<TargetType>() == target);
+    assert(f2.template target<FuncType*>() == 0);
+    }
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+}
+
+template <class Alloc>
+void test_for_alloc(Alloc& alloc) {
+    test_FunctionObject<int()>(alloc);
+    test_FunctionObject<int(int)>(alloc);
+    test_FunctionObject<int(int, int)>(alloc);
+    test_FunctionObject<int(int, int, int)>(alloc);
+
+    test_FreeFunction<int()>(alloc);
+    test_FreeFunction<int(int)>(alloc);
+    test_FreeFunction<int(int, int)>(alloc);
+    test_FreeFunction<int(int, int, int)>(alloc);
+
+    test_MemFunClass<int(MemFunClass::*)() const, int(MemFunClass&)>(alloc);
+    test_MemFunClass<int(MemFunClass::*)(int) const, int(MemFunClass&, int)>(alloc);
+    test_MemFunClass<int(MemFunClass::*)(int, int) const, int(MemFunClass&, int, int)>(alloc);
+}
+
+int main(int, char**) {
+  globalMemCounter.reset();
+  {
+    bare_allocator<DummyClass> bare_alloc;
+    test_for_alloc(bare_alloc);
+  }
+    {
+        non_default_test_allocator<DummyClass> non_default_alloc(42, &alloc_stats);
+        test_for_alloc(non_default_alloc);
+    }
+#if TEST_STD_VER >= 11
+    {
+        using Fn = std::function<void(int, int, int)>;
+        static_assert(std::is_constructible<Fn, std::allocator_arg_t, std::allocator<int>, LValueCallable&>::value, "");
+        static_assert(std::is_constructible<Fn, std::allocator_arg_t, std::allocator<int>, LValueCallable>::value, "");
+        static_assert(!std::is_constructible<Fn, std::allocator_arg_t, std::allocator<int>, RValueCallable&>::value, "");
+        static_assert(!std::is_constructible<Fn, std::allocator_arg_t, std::allocator<int>, RValueCallable>::value, "");
+    }
+#endif
+
+
+  return 0;
+}

module/jni/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/alloc_F.verify.cpp

@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// class function<R(ArgTypes...)>
+
+// template<class F, class A> function(allocator_arg_t, const A&, F);
+//
+// This signature was removed in C++17
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+void foo(int) {}
+
+int main(int, char**)
+{
+    std::function<void(int)> f(std::allocator_arg, std::allocator<int>(), foo); // expected-error {{no matching constructor for initialization of}}
+    return 0;
+}

module/jni/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/alloc_function.pass.cpp

@@ -0,0 +1,130 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+// REQUIRES: c++03 || c++11 || c++14
+
+// class function<R(ArgTypes...)>
+
+// template<class A> function(allocator_arg_t, const A&, const function&);
+
+// This test runs in C++03, but we have deprecated using std::function in C++03.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX03_FUNCTION
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "test_allocator.h"
+#include "count_new.h"
+#include "../function_types.h"
+
+class DummyClass {};
+
+template <class FuncType, class AllocType>
+void test_FunctionObject(AllocType& alloc)
+{
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    {
+    // Construct function from FunctionObject.
+    std::function<FuncType> f = FunctionObject();
+    assert(FunctionObject::count == 1);
+    assert(globalMemCounter.checkOutstandingNewEq(1));
+    RTTI_ASSERT(f.template target<FunctionObject>());
+    RTTI_ASSERT(f.template target<FuncType>() == 0);
+    RTTI_ASSERT(f.template target<FuncType*>() == 0);
+    // Copy function with allocator
+    std::function<FuncType> f2(std::allocator_arg, alloc, f);
+    assert(FunctionObject::count == 2);
+    assert(globalMemCounter.checkOutstandingNewEq(2));
+    RTTI_ASSERT(f2.template target<FunctionObject>());
+    RTTI_ASSERT(f2.template target<FuncType>() == 0);
+    RTTI_ASSERT(f2.template target<FuncType*>() == 0);
+    }
+    assert(FunctionObject::count == 0);
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+}
+
+template <class FuncType, class AllocType>
+void test_FreeFunction(AllocType& alloc)
+{
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    {
+    // Construct function from function pointer.
+    FuncType* target = &FreeFunction;
+    std::function<FuncType> f = target;
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    RTTI_ASSERT(f.template target<FuncType*>());
+    RTTI_ASSERT(*f.template target<FuncType*>() == target);
+    RTTI_ASSERT(f.template target<FuncType>() == 0);
+    // Copy function with allocator
+    std::function<FuncType> f2(std::allocator_arg, alloc, f);
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    RTTI_ASSERT(f2.template target<FuncType*>());
+    RTTI_ASSERT(*f2.template target<FuncType*>() == target);
+    RTTI_ASSERT(f2.template target<FuncType>() == 0);
+    }
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+}
+
+template <class TargetType, class FuncType, class AllocType>
+void test_MemFunClass(AllocType& alloc)
+{
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    {
+    // Construct function from function pointer.
+    TargetType target = &MemFunClass::foo;
+    std::function<FuncType> f = target;
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    RTTI_ASSERT(f.template target<TargetType>());
+    RTTI_ASSERT(*f.template target<TargetType>() == target);
+    RTTI_ASSERT(f.template target<FuncType*>() == 0);
+    // Copy function with allocator
+    std::function<FuncType> f2(std::allocator_arg, alloc, f);
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    RTTI_ASSERT(f2.template target<TargetType>());
+    RTTI_ASSERT(*f2.template target<TargetType>() == target);
+    RTTI_ASSERT(f2.template target<FuncType*>() == 0);
+    }
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+}
+
+template <class Alloc>
+void test_for_alloc(Alloc& alloc)
+{
+    // Large FunctionObject -- Allocation should occur
+    test_FunctionObject<int()>(alloc);
+    test_FunctionObject<int(int)>(alloc);
+    test_FunctionObject<int(int, int)>(alloc);
+    test_FunctionObject<int(int, int, int)>(alloc);
+    // Free function -- No allocation should occur
+    test_FreeFunction<int()>(alloc);
+    test_FreeFunction<int(int)>(alloc);
+    test_FreeFunction<int(int, int)>(alloc);
+    test_FreeFunction<int(int, int, int)>(alloc);
+    // Member function -- No allocation should occur.
+    test_MemFunClass<int(MemFunClass::*)() const, int(MemFunClass&)>(alloc);
+    test_MemFunClass<int(MemFunClass::*)(int) const, int(MemFunClass&, int)>(alloc);
+    test_MemFunClass<int(MemFunClass::*)(int, int) const, int(MemFunClass&, int, int)>(alloc);
+}
+
+int main(int, char**)
+{
+  globalMemCounter.reset();
+  {
+    bare_allocator<DummyClass> alloc;
+    test_for_alloc(alloc);
+  }
+  {
+    non_default_test_allocator<DummyClass> alloc(42);
+    test_for_alloc(alloc);
+  }
+
+  return 0;
+}

module/jni/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/alloc_function.verify.cpp

@@ -0,0 +1,30 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// class function<R(ArgTypes...)>
+
+// template<class A> function(allocator_arg_t, const A&, const function&);
+//
+// This signature was removed in C++17
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    typedef std::function<void(int)> F;
+    F f1;
+    F f2(std::allocator_arg, std::allocator<int>(), f1); // expected-error {{no matching constructor for initialization of}}
+    return 0;
+}

module/jni/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/alloc_nullptr.pass.cpp

@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+// REQUIRES: c++03 || c++11 || c++14
+
+// class function<R(ArgTypes...)>
+
+// template<class A> function(allocator_arg_t, const A&, nullptr_t);
+//
+// This signature was removed in C++17
+
+// This test runs in C++03, but we have deprecated using std::function in C++03.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX03_FUNCTION
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    std::function<int(int)> f(std::allocator_arg, bare_allocator<int>(), nullptr);
+    assert(!f);
+
+  return 0;
+}

module/jni/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/alloc_nullptr.verify.cpp

@@ -0,0 +1,28 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// class function<R(ArgTypes...)>
+
+// template<class A> function(allocator_arg_t, const A&, nullptr_t);
+//
+// This signature was removed in C++17
+
+#include <functional>
+#include <cassert>
+
+#include "min_allocator.h"
+
+int main(int, char**)
+{
+    std::function<int(int)> f(std::allocator_arg, std::allocator<int>(), nullptr); // expected-error {{no matching constructor for initialization of}}
+    return 0;
+}

module/jni/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/alloc_rfunction.pass.cpp

@@ -0,0 +1,112 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03
+// REQUIRES: c++11 || c++14
+
+// <functional>
+
+// class function<R(ArgTypes...)>
+
+// template<class A> function(allocator_arg_t, const A&, function&&);
+//
+// This signature was removed in C++17
+
+#include <functional>
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+#include "min_allocator.h"
+#include "count_new.h"
+
+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 A::count = 0;
+
+int g(int) { return 0; }
+
+int main(int, char**)
+{
+  globalMemCounter.reset();
+  assert(globalMemCounter.checkOutstandingNewEq(0));
+  {
+    std::function<int(int)> f = A();
+    assert(A::count == 1);
+    assert(globalMemCounter.checkOutstandingNewEq(1));
+    RTTI_ASSERT(f.target<A>());
+    RTTI_ASSERT(f.target<int (*)(int)>() == 0);
+    std::function<int(int)> f2(std::allocator_arg, bare_allocator<A>(),
+                               std::move(f));
+    assert(A::count == 1);
+    assert(globalMemCounter.checkOutstandingNewEq(1));
+    RTTI_ASSERT(f2.target<A>());
+    RTTI_ASSERT(f2.target<int (*)(int)>() == 0);
+    RTTI_ASSERT(f.target<A>() == 0);
+    RTTI_ASSERT(f.target<int (*)(int)>() == 0);
+  }
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    {
+        // Test that moving a function constructed from a reference wrapper
+        // is done without allocating.
+        DisableAllocationGuard g;
+        using Ref = std::reference_wrapper<A>;
+        A a;
+        Ref aref(a);
+        std::function<int(int)> f(aref);
+        assert(A::count == 1);
+        RTTI_ASSERT(f.target<A>() == nullptr);
+        RTTI_ASSERT(f.target<Ref>());
+        std::function<int(int)> f2(std::allocator_arg, std::allocator<int>{},
+                                   std::move(f));
+        assert(A::count == 1);
+        RTTI_ASSERT(f2.target<A>() == nullptr);
+        RTTI_ASSERT(f2.target<Ref>());
+        RTTI_ASSERT(f.target<Ref>()); // f is unchanged because the target is small
+    }
+    {
+        // Test that moving a function constructed from a function pointer
+        // is done without allocating
+        DisableAllocationGuard guard;
+        using Ptr = int(*)(int);
+        Ptr p = g;
+        std::function<int(int)> f(p);
+        RTTI_ASSERT(f.target<A>() == nullptr);
+        RTTI_ASSERT(f.target<Ptr>());
+        std::function<int(int)> f2(std::allocator_arg, std::allocator<int>(),
+                                   std::move(f));
+        RTTI_ASSERT(f2.target<A>() == nullptr);
+        RTTI_ASSERT(f2.target<Ptr>());
+        RTTI_ASSERT(f.target<Ptr>()); // f is unchanged because the target is small
+    }
+
+  return 0;
+}

module/jni/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/alloc_rfunction.verify.cpp

@@ -0,0 +1,59 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// class function<R(ArgTypes...)>
+
+// template<class A> function(allocator_arg_t, const A&, function&&);
+//
+// This signature was removed in C++17
+
+#include <functional>
+#include <memory>
+#include <cassert>
+
+#include "test_macros.h"
+
+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 A::count = 0;
+
+int g(int) { return 0; }
+
+int main(int, char**)
+{
+    std::function<int(int)> f = A();
+    std::function<int(int)> f2(std::allocator_arg, std::allocator<A>(), std::move(f)); // expected-error {{no matching constructor for initialization of}}
+    return 0;
+}

module/jni/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/copy_assign.pass.cpp

@@ -0,0 +1,143 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// class function<R(ArgTypes...)>
+
+// function& operator=(const function& f);
+
+// This test runs in C++03, but we have deprecated using std::function in C++03.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX03_FUNCTION
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "count_new.h"
+
+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 A::count = 0;
+
+int g0() { return 0; }
+int g(int) { return 0; }
+int g2(int, int) { return 2; }
+int g3(int, int, int) { return 3; }
+
+int main(int, char**) {
+  globalMemCounter.reset();
+  assert(globalMemCounter.checkOutstandingNewEq(0));
+  {
+    std::function<int(int)> f = A();
+    assert(A::count == 1);
+    assert(globalMemCounter.checkOutstandingNewEq(1));
+    RTTI_ASSERT(f.target<A>());
+    RTTI_ASSERT(f.target<int (*)(int)>() == 0);
+    std::function<int(int)> f2;
+    f2 = f;
+    assert(A::count == 2);
+    assert(globalMemCounter.checkOutstandingNewEq(2));
+    RTTI_ASSERT(f2.target<A>());
+    RTTI_ASSERT(f2.target<int (*)(int)>() == 0);
+  }
+  assert(A::count == 0);
+  assert(globalMemCounter.checkOutstandingNewEq(0));
+  {
+    std::function<int(int)> f = g;
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    RTTI_ASSERT(f.target<int (*)(int)>());
+    RTTI_ASSERT(f.target<A>() == 0);
+    std::function<int(int)> f2;
+    f2 = f;
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    RTTI_ASSERT(f2.target<int (*)(int)>());
+    RTTI_ASSERT(f2.target<A>() == 0);
+  }
+  assert(globalMemCounter.checkOutstandingNewEq(0));
+  {
+    std::function<int(int)> f;
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    RTTI_ASSERT(f.target<int (*)(int)>() == 0);
+    RTTI_ASSERT(f.target<A>() == 0);
+    std::function<int(int)> f2;
+    f2 = f;
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    RTTI_ASSERT(f2.target<int (*)(int)>() == 0);
+    RTTI_ASSERT(f2.target<A>() == 0);
+  }
+  {
+    typedef std::function<int()> Func;
+    Func f = g0;
+    Func& fr = (f = (Func &)f);
+    assert(&fr == &f);
+    RTTI_ASSERT(*f.target<int(*)()>() == g0);
+  }
+  {
+    typedef std::function<int(int)> Func;
+    Func f = g;
+    Func& fr = (f = (Func &)f);
+    assert(&fr == &f);
+    RTTI_ASSERT(*f.target<int(*)(int)>() == g);
+  }
+  {
+    typedef std::function<int(int, int)> Func;
+    Func f = g2;
+    Func& fr = (f = (Func &)f);
+    assert(&fr == &f);
+    RTTI_ASSERT(*f.target<int(*)(int, int)>() == g2);
+  }
+  {
+    typedef std::function<int(int, int, int)> Func;
+    Func f = g3;
+    Func& fr = (f = (Func &)f);
+    assert(&fr == &f);
+    RTTI_ASSERT(*f.target<int(*)(int, int, int)>() == g3);
+  }
+#if TEST_STD_VER >= 11
+  assert(globalMemCounter.checkOutstandingNewEq(0));
+  {
+    std::function<int(int)> f = A();
+    assert(A::count == 1);
+    assert(globalMemCounter.checkOutstandingNewEq(1));
+    RTTI_ASSERT(f.target<A>());
+    RTTI_ASSERT(f.target<int (*)(int)>() == 0);
+    std::function<int(int)> f2;
+    f2 = std::move(f);
+    assert(A::count == 1);
+    assert(globalMemCounter.checkOutstandingNewEq(1));
+    RTTI_ASSERT(f2.target<A>());
+    RTTI_ASSERT(f2.target<int (*)(int)>() == 0);
+    RTTI_ASSERT(f.target<A>() == 0);
+    RTTI_ASSERT(f.target<int (*)(int)>() == 0);
+  }
+#endif
+
+  return 0;
+}

module/jni/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/copy_move.pass.cpp

@@ -0,0 +1,178 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// FIXME: In MSVC mode, even "std::function<int(int)> f(aref);" causes
+// allocations.
+// XFAIL: target=x86_64-pc-windows-msvc && stdlib=libc++
+
+// <functional>
+
+// class function<R(ArgTypes...)>
+
+// function(const function&  f);
+// function(function&& f); // noexcept in C++20
+
+// This test runs in C++03, but we have deprecated using std::function in C++03.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX03_FUNCTION
+
+#include <functional>
+#include <memory>
+#include <cstdlib>
+#include <cassert>
+
+#include "test_macros.h"
+#include "count_new.h"
+
+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 A::count = 0;
+
+int g(int) {return 0;}
+
+int main(int, char**)
+{
+    globalMemCounter.reset();
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    {
+    std::function<int(int)> f = A();
+    assert(A::count == 1);
+    assert(globalMemCounter.checkOutstandingNewEq(1));
+    RTTI_ASSERT(f.target<A>());
+    RTTI_ASSERT(f.target<int(*)(int)>() == 0);
+    std::function<int(int)> f2 = f;
+    assert(A::count == 2);
+    assert(globalMemCounter.checkOutstandingNewEq(2));
+    RTTI_ASSERT(f2.target<A>());
+    RTTI_ASSERT(f2.target<int(*)(int)>() == 0);
+    }
+    assert(A::count == 0);
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    {
+    std::function<int(int)> f = g;
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    RTTI_ASSERT(f.target<int(*)(int)>());
+    RTTI_ASSERT(f.target<A>() == 0);
+    std::function<int(int)> f2 = f;
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    RTTI_ASSERT(f2.target<int(*)(int)>());
+    RTTI_ASSERT(f2.target<A>() == 0);
+    }
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    {
+    std::function<int(int)> f;
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    RTTI_ASSERT(f.target<int(*)(int)>() == 0);
+    RTTI_ASSERT(f.target<A>() == 0);
+    std::function<int(int)> f2 = f;
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    RTTI_ASSERT(f2.target<int(*)(int)>() == 0);
+    RTTI_ASSERT(f2.target<A>() == 0);
+    }
+    {
+    std::function<int(int)> f;
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    RTTI_ASSERT(f.target<int(*)(int)>() == 0);
+    RTTI_ASSERT(f.target<A>() == 0);
+    assert(!f);
+    std::function<long(int)> g = f;
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    RTTI_ASSERT(g.target<long(*)(int)>() == 0);
+    RTTI_ASSERT(g.target<A>() == 0);
+    assert(!g);
+    }
+#if TEST_STD_VER >= 11
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    { // Test rvalue references
+        std::function<int(int)> f = A();
+        assert(A::count == 1);
+        assert(globalMemCounter.checkOutstandingNewEq(1));
+        RTTI_ASSERT(f.target<A>());
+        RTTI_ASSERT(f.target<int(*)(int)>() == 0);
+		LIBCPP_ASSERT_NOEXCEPT(std::function<int(int)>(std::move(f)));
+#if TEST_STD_VER > 17
+		ASSERT_NOEXCEPT(std::function<int(int)>(std::move(f)));
+#endif
+        std::function<int(int)> f2 = std::move(f);
+        assert(A::count == 1);
+        assert(globalMemCounter.checkOutstandingNewEq(1));
+        RTTI_ASSERT(f2.target<A>());
+        RTTI_ASSERT(f2.target<int(*)(int)>() == 0);
+        RTTI_ASSERT(f.target<A>() == 0);
+        RTTI_ASSERT(f.target<int(*)(int)>() == 0);
+    }
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    {
+        // Test that moving a function constructed from a reference wrapper
+        // is done without allocating.
+        DisableAllocationGuard g;
+        using Ref = std::reference_wrapper<A>;
+        A a;
+        Ref aref(a);
+        std::function<int(int)> f(aref);
+        assert(A::count == 1);
+        RTTI_ASSERT(f.target<A>() == nullptr);
+        RTTI_ASSERT(f.target<Ref>());
+		LIBCPP_ASSERT_NOEXCEPT(std::function<int(int)>(std::move(f)));
+#if TEST_STD_VER > 17
+		ASSERT_NOEXCEPT(std::function<int(int)>(std::move(f)));
+#endif
+        std::function<int(int)> f2(std::move(f));
+        assert(A::count == 1);
+        RTTI_ASSERT(f2.target<A>() == nullptr);
+        RTTI_ASSERT(f2.target<Ref>());
+#if defined(_LIBCPP_VERSION)
+        RTTI_ASSERT(f.target<Ref>()); // f is unchanged because the target is small
+#endif
+    }
+    {
+        // Test that moving a function constructed from a function pointer
+        // is done without allocating
+        DisableAllocationGuard guard;
+        using Ptr = int(*)(int);
+        Ptr p = g;
+        std::function<int(int)> f(p);
+        RTTI_ASSERT(f.target<A>() == nullptr);
+        RTTI_ASSERT(f.target<Ptr>());
+		LIBCPP_ASSERT_NOEXCEPT(std::function<int(int)>(std::move(f)));
+#if TEST_STD_VER > 17
+		ASSERT_NOEXCEPT(std::function<int(int)>(std::move(f)));
+#endif
+        std::function<int(int)> f2(std::move(f));
+        RTTI_ASSERT(f2.target<A>() == nullptr);
+        RTTI_ASSERT(f2.target<Ptr>());
+#if defined(_LIBCPP_VERSION)
+        RTTI_ASSERT(f.target<Ptr>()); // f is unchanged because the target is small
+#endif
+    }
+#endif // TEST_STD_VER >= 11
+
+  return 0;
+}

module/jni/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/deduct_F.fail.cpp

@@ -0,0 +1,33 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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>
+
+// template<class F>
+// function(F) -> function<see-below>;
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// The deduction guides for std::function do not handle rvalue-ref qualified
+// call operators and C-style variadics. It also doesn't deduce from nullptr_t.
+// Make sure we stick to the specification.
+
+#include <functional>
+#include <type_traits>
+
+struct R { };
+struct f0 { R operator()() && { return {}; } };
+struct f1 { R operator()(int, ...) { return {}; } };
+
+int main(int, char**) {
+    std::function f = f0{}; // expected-error{{no viable constructor or deduction guide for deduction of template arguments of 'function'}}
+    std::function g = f1{}; // expected-error{{no viable constructor or deduction guide for deduction of template arguments of 'function'}}
+    std::function h = nullptr; // expected-error{{no viable constructor or deduction guide for deduction of template arguments of 'function'}}
+    return 0;
+}

module/jni/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/deduct_F.pass.cpp

@@ -0,0 +1,137 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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>
+
+// template<class F>
+// function(F) -> function<see-below>;
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+#include <functional>
+#include <type_traits>
+#include <utility>
+
+#include "test_macros.h"
+
+struct R { };
+struct A1 { };
+struct A2 { };
+struct A3 { };
+
+#define DECLARE_FUNCTIONS_WITH_QUALS(N, ...)                              \
+  struct f0_##N  { R operator()() __VA_ARGS__           { return {}; } }; \
+  struct f1_##N  { R operator()(A1) __VA_ARGS__         { return {}; } }; \
+  struct f2_##N  { R operator()(A1, A2) __VA_ARGS__     { return {}; } }; \
+  struct f3_##N  { R operator()(A1, A2, A3) __VA_ARGS__ { return {}; } }  \
+/**/
+
+DECLARE_FUNCTIONS_WITH_QUALS(0, /* nothing */);
+DECLARE_FUNCTIONS_WITH_QUALS(1, const);
+DECLARE_FUNCTIONS_WITH_QUALS(2, volatile);
+DECLARE_FUNCTIONS_WITH_QUALS(3, const volatile);
+DECLARE_FUNCTIONS_WITH_QUALS(4, &);
+DECLARE_FUNCTIONS_WITH_QUALS(5 , const &);
+DECLARE_FUNCTIONS_WITH_QUALS(6 , volatile &);
+DECLARE_FUNCTIONS_WITH_QUALS(7 , const volatile &);
+DECLARE_FUNCTIONS_WITH_QUALS(8 , noexcept);
+DECLARE_FUNCTIONS_WITH_QUALS(9 , const noexcept);
+DECLARE_FUNCTIONS_WITH_QUALS(10, volatile noexcept);
+DECLARE_FUNCTIONS_WITH_QUALS(11, const volatile noexcept);
+DECLARE_FUNCTIONS_WITH_QUALS(12, & noexcept);
+DECLARE_FUNCTIONS_WITH_QUALS(13, const & noexcept);
+DECLARE_FUNCTIONS_WITH_QUALS(14, volatile & noexcept);
+DECLARE_FUNCTIONS_WITH_QUALS(15, const volatile & noexcept);
+
+int main(int, char**) {
+#define CHECK_FUNCTIONS(N)                                                    \
+  do {                                                                        \
+    /* implicit */                                                            \
+    std::function g0 = f0_##N{};                                              \
+    ASSERT_SAME_TYPE(decltype(g0), std::function<R()>);                       \
+                                                                              \
+    std::function g1 = f1_##N{};                                              \
+    ASSERT_SAME_TYPE(decltype(g1), std::function<R(A1)>);                     \
+                                                                              \
+    std::function g2 = f2_##N{};                                              \
+    ASSERT_SAME_TYPE(decltype(g2), std::function<R(A1, A2)>);                 \
+                                                                              \
+    std::function g3 = f3_##N{};                                              \
+    ASSERT_SAME_TYPE(decltype(g3), std::function<R(A1, A2, A3)>);             \
+                                                                              \
+    /* explicit */                                                            \
+    std::function g4{f0_##N{}};                                               \
+    ASSERT_SAME_TYPE(decltype(g4), std::function<R()>);                       \
+                                                                              \
+    std::function g5{f1_##N{}};                                               \
+    ASSERT_SAME_TYPE(decltype(g5), std::function<R(A1)>);                     \
+                                                                              \
+    std::function g6{f2_##N{}};                                               \
+    ASSERT_SAME_TYPE(decltype(g6), std::function<R(A1, A2)>);                 \
+                                                                              \
+    std::function g7{f3_##N{}};                                               \
+    ASSERT_SAME_TYPE(decltype(g7), std::function<R(A1, A2, A3)>);             \
+                                                                              \
+    /* from std::function */                                                  \
+    std::function<R(A1)> unary;                                               \
+    std::function g8 = unary;                                                 \
+    ASSERT_SAME_TYPE(decltype(g8), std::function<R(A1)>);                     \
+                                                                              \
+    std::function g9 = std::move(unary);                                      \
+    ASSERT_SAME_TYPE(decltype(g9), std::function<R(A1)>);                     \
+                                                                              \
+    std::function<R(A1&&)> unary_ref;                                         \
+    std::function g10 = unary_ref;                                            \
+    ASSERT_SAME_TYPE(decltype(g10), std::function<R(A1&&)>);                  \
+                                                                              \
+    std::function g11 = std::move(unary_ref);                                 \
+    ASSERT_SAME_TYPE(decltype(g11), std::function<R(A1&&)>);                  \
+  } while (false)                                                             \
+/**/
+
+  // Make sure we can deduce from function objects with valid call operators
+  CHECK_FUNCTIONS(0);
+  CHECK_FUNCTIONS(1);
+  CHECK_FUNCTIONS(2);
+  CHECK_FUNCTIONS(3);
+  CHECK_FUNCTIONS(4);
+  CHECK_FUNCTIONS(5);
+  CHECK_FUNCTIONS(6);
+  CHECK_FUNCTIONS(7);
+  CHECK_FUNCTIONS(8);
+  CHECK_FUNCTIONS(9);
+  CHECK_FUNCTIONS(10);
+  CHECK_FUNCTIONS(11);
+  CHECK_FUNCTIONS(12);
+  CHECK_FUNCTIONS(13);
+  CHECK_FUNCTIONS(14);
+  CHECK_FUNCTIONS(15);
+
+  return 0;
+}
+
+// Make sure we fail in a SFINAE-friendly manner when we try to deduce
+// from a type without a valid call operator.
+template <typename F, typename = decltype(std::function{std::declval<F>()})>
+constexpr bool can_deduce() { return true; }
+template <typename F>
+constexpr bool can_deduce(...) { return false; }
+
+struct invalid1 { };
+struct invalid2 {
+  template <typename ...Args>
+  void operator()(Args ...);
+};
+struct invalid3 {
+  void operator()(int);
+  void operator()(long);
+};
+static_assert(!can_deduce<invalid1>());
+static_assert(!can_deduce<invalid2>());
+static_assert(!can_deduce<invalid3>());

module/jni/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/deduct_ptr.pass.cpp

@@ -0,0 +1,112 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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>
+
+// template<class R, class ...Args>
+// function(R(*)(Args...)) -> function<R(Args...)>;
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+#include <functional>
+#include <type_traits>
+
+#include "test_macros.h"
+
+struct R { };
+struct A1 { };
+struct A2 { };
+struct A3 { };
+
+R f0() { return {}; }
+R f1(A1) { return {}; }
+R f2(A1, A2) { return {}; }
+R f3(A1, A2, A3) { return {}; }
+R f4(A1 = {}) { return {}; }
+
+int main(int, char**) {
+  {
+    // implicit
+    std::function a = f0;
+    ASSERT_SAME_TYPE(decltype(a), std::function<R()>);
+
+    std::function b = &f0;
+    ASSERT_SAME_TYPE(decltype(b), std::function<R()>);
+
+    // explicit
+    std::function c{f0};
+    ASSERT_SAME_TYPE(decltype(c), std::function<R()>);
+
+    std::function d{&f0};
+    ASSERT_SAME_TYPE(decltype(d), std::function<R()>);
+  }
+  {
+    // implicit
+    std::function a = f1;
+    ASSERT_SAME_TYPE(decltype(a), std::function<R(A1)>);
+
+    std::function b = &f1;
+    ASSERT_SAME_TYPE(decltype(b), std::function<R(A1)>);
+
+    // explicit
+    std::function c{f1};
+    ASSERT_SAME_TYPE(decltype(c), std::function<R(A1)>);
+
+    std::function d{&f1};
+    ASSERT_SAME_TYPE(decltype(d), std::function<R(A1)>);
+  }
+  {
+    // implicit
+    std::function a = f2;
+    ASSERT_SAME_TYPE(decltype(a), std::function<R(A1, A2)>);
+
+    std::function b = &f2;
+    ASSERT_SAME_TYPE(decltype(b), std::function<R(A1, A2)>);
+
+    // explicit
+    std::function c{f2};
+    ASSERT_SAME_TYPE(decltype(c), std::function<R(A1, A2)>);
+
+    std::function d{&f2};
+    ASSERT_SAME_TYPE(decltype(d), std::function<R(A1, A2)>);
+  }
+  {
+    // implicit
+    std::function a = f3;
+    ASSERT_SAME_TYPE(decltype(a), std::function<R(A1, A2, A3)>);
+
+    std::function b = &f3;
+    ASSERT_SAME_TYPE(decltype(b), std::function<R(A1, A2, A3)>);
+
+    // explicit
+    std::function c{f3};
+    ASSERT_SAME_TYPE(decltype(c), std::function<R(A1, A2, A3)>);
+
+    std::function d{&f3};
+    ASSERT_SAME_TYPE(decltype(d), std::function<R(A1, A2, A3)>);
+  }
+  // Make sure defaulted arguments don't mess up the deduction
+  {
+    // implicit
+    std::function a = f4;
+    ASSERT_SAME_TYPE(decltype(a), std::function<R(A1)>);
+
+    std::function b = &f4;
+    ASSERT_SAME_TYPE(decltype(b), std::function<R(A1)>);
+
+    // explicit
+    std::function c{f4};
+    ASSERT_SAME_TYPE(decltype(c), std::function<R(A1)>);
+
+    std::function d{&f4};
+    ASSERT_SAME_TYPE(decltype(d), std::function<R(A1)>);
+  }
+
+  return 0;
+}

module/jni/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/default.pass.cpp

@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// class function<R(ArgTypes...)>
+
+// function();
+
+// This test runs in C++03, but we have deprecated using std::function in C++03.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX03_FUNCTION
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::function<int(int)> f;
+    assert(!f);
+
+  return 0;
+}

module/jni/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/nullptr_t.pass.cpp

@@ -0,0 +1,29 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// class function<R(ArgTypes...)>
+
+// function(nullptr_t);
+
+// This test runs in C++03, but we have deprecated using std::function in C++03.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX03_FUNCTION
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+int main(int, char**)
+{
+    std::function<int(int)> f(nullptr);
+    assert(!f);
+
+  return 0;
+}

module/jni/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.con/nullptr_t_assign.pass.cpp

@@ -0,0 +1,79 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// class function<R(ArgTypes...)>
+
+// function& operator=(nullptr_t);
+
+// This test runs in C++03, but we have deprecated using std::function in C++03.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX03_FUNCTION
+
+#include <functional>
+#include <cassert>
+
+#include "count_new.h"
+
+#include "test_macros.h"
+
+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 A::count = 0;
+
+int g(int) {return 0;}
+
+int main(int, char**)
+{
+    globalMemCounter.reset();
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    {
+    std::function<int(int)> f = A();
+    assert(A::count == 1);
+    assert(globalMemCounter.checkOutstandingNewEq(1));
+    RTTI_ASSERT(f.target<A>());
+    f = nullptr;
+    assert(A::count == 0);
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    RTTI_ASSERT(f.target<A>() == 0);
+    }
+    {
+    std::function<int(int)> f = g;
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    RTTI_ASSERT(f.target<int(*)(int)>());
+    RTTI_ASSERT(f.target<A>() == 0);
+    f = nullptr;
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    RTTI_ASSERT(f.target<int(*)(int)>() == 0);
+    }
+
+  return 0;
+}

module/jni/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.inv/invoke.compile.fail.cpp

@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// class function<R(ArgTypes...)>
+
+// R operator()(ArgTypes... args) const
+
+#include <functional>
+#include <cassert>
+
+// member data pointer:  cv qualifiers should transfer from argument to return type
+
+struct A_int_1
+{
+    A_int_1() : data_(5) {}
+
+    int data_;
+};
+
+void
+test_int_1()
+{
+    // member data pointer
+    {
+        int A_int_1::*fp = &A_int_1::data_;
+        A_int_1 a;
+        std::function<int& (const A_int_1*)> r2(fp);
+        const A_int_1* ap = &a;
+        assert(r2(ap) == 6);
+        r2(ap) = 7;
+        assert(r2(ap) == 7);
+    }
+}
+
+int main(int, char**)
+{
+    test_int_1();
+
+  return 0;
+}

module/jni/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.inv/invoke.pass.cpp

@@ -0,0 +1,432 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// class function<R(ArgTypes...)>
+
+// R operator()(ArgTypes... args) const
+
+// This test runs in C++03, but we have deprecated using std::function in C++03.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX03_FUNCTION
+
+// Address Sanitizer doesn't instrument weak symbols on Linux. When a key
+// function is defined for bad_function_call's vtable, its typeinfo and vtable
+// will be defined as strong symbols in the library and weak symbols in other
+// translation units. Only the strong symbol will be instrumented, increasing
+// its size (due to the redzone) and leading to a serious ODR violation
+// resulting in a crash.
+// Some relevant bugs:
+// https://github.com/google/sanitizers/issues/1017
+// https://github.com/google/sanitizers/issues/619
+// https://github.com/google/sanitizers/issues/398
+// https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68016
+// UNSUPPORTED: asan
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+
+int count = 0;
+
+
+// 0 args, return int
+
+int f_int_0()
+{
+    return 3;
+}
+
+struct A_int_0
+{
+    int operator()() {return 4;}
+};
+
+void test_int_0()
+{
+    // function
+    {
+        std::function<int ()> r1(f_int_0);
+        assert(r1() == 3);
+    }
+    // function pointer
+    {
+        int (*fp)() = f_int_0;
+        std::function<int ()> r1(fp);
+        assert(r1() == 3);
+    }
+    // functor
+    {
+        A_int_0 a0;
+        std::function<int ()> r1(a0);
+        assert(r1() == 4);
+    }
+}
+
+
+// 0 args, return void
+
+void f_void_0()
+{
+    ++count;
+}
+
+struct A_void_0
+{
+    void operator()() {++count;}
+};
+
+void
+test_void_0()
+{
+    int save_count = count;
+    // function
+    {
+        std::function<void ()> r1(f_void_0);
+        r1();
+        assert(count == save_count+1);
+        save_count = count;
+    }
+    // function pointer
+    {
+        void (*fp)() = f_void_0;
+        std::function<void ()> r1(fp);
+        r1();
+        assert(count == save_count+1);
+        save_count = count;
+    }
+    // functor
+    {
+        A_void_0 a0;
+        std::function<void ()> r1(a0);
+        r1();
+        assert(count == save_count+1);
+        save_count = count;
+    }
+}
+
+// 1 arg, return void
+
+void f_void_1(int i)
+{
+    count += i;
+}
+
+struct A_void_1
+{
+    void operator()(int i)
+    {
+        count += i;
+    }
+
+    void mem1() {++count;}
+    void mem2() const {++count;}
+};
+
+void
+test_void_1()
+{
+    int save_count = count;
+    // function
+    {
+        std::function<void (int)> r1(f_void_1);
+        int i = 2;
+        r1(i);
+        assert(count == save_count+2);
+        save_count = count;
+    }
+    // function pointer
+    {
+        void (*fp)(int) = f_void_1;
+        std::function<void (int)> r1(fp);
+        int i = 3;
+        r1(i);
+        assert(count == save_count+3);
+        save_count = count;
+    }
+    // functor
+    {
+        A_void_1 a0;
+        std::function<void (int)> r1(a0);
+        int i = 4;
+        r1(i);
+        assert(count == save_count+4);
+        save_count = count;
+    }
+    // member function pointer
+    {
+        void (A_void_1::*fp)() = &A_void_1::mem1;
+        std::function<void (A_void_1)> r1(fp);
+        A_void_1 a;
+        r1(a);
+        assert(count == save_count+1);
+        save_count = count;
+        A_void_1* ap = &a;
+        std::function<void (A_void_1*)> r2 = fp;
+        r2(ap);
+        assert(count == save_count+1);
+        save_count = count;
+    }
+    // const member function pointer
+    {
+        void (A_void_1::*fp)() const = &A_void_1::mem2;
+        std::function<void (A_void_1)> r1(fp);
+        A_void_1 a;
+        r1(a);
+        assert(count == save_count+1);
+        save_count = count;
+        std::function<void (A_void_1*)> r2(fp);
+        A_void_1* ap = &a;
+        r2(ap);
+        assert(count == save_count+1);
+        save_count = count;
+    }
+}
+
+// 1 arg, return int
+
+int f_int_1(int i)
+{
+    return i + 1;
+}
+
+struct A_int_1
+{
+    A_int_1() : data_(5) {}
+    int operator()(int i)
+    {
+        return i - 1;
+    }
+
+    int mem1() {return 3;}
+    int mem2() const {return 4;}
+    int data_;
+};
+
+void
+test_int_1()
+{
+    // function
+    {
+        std::function<int (int)> r1(f_int_1);
+        int i = 2;
+        assert(r1(i) == 3);
+    }
+    // function pointer
+    {
+        int (*fp)(int) = f_int_1;
+        std::function<int (int)> r1(fp);
+        int i = 3;
+        assert(r1(i) == 4);
+    }
+    // functor
+    {
+        A_int_1 a0;
+        std::function<int (int)> r1(a0);
+        int i = 4;
+        assert(r1(i) == 3);
+    }
+    // member function pointer
+    {
+        int (A_int_1::*fp)() = &A_int_1::mem1;
+        std::function<int (A_int_1)> r1(fp);
+        A_int_1 a;
+        assert(r1(a) == 3);
+        std::function<int (A_int_1*)> r2(fp);
+        A_int_1* ap = &a;
+        assert(r2(ap) == 3);
+    }
+    // const member function pointer
+    {
+        int (A_int_1::*fp)() const = &A_int_1::mem2;
+        std::function<int (A_int_1)> r1(fp);
+        A_int_1 a;
+        assert(r1(a) == 4);
+        std::function<int (A_int_1*)> r2(fp);
+        A_int_1* ap = &a;
+        assert(r2(ap) == 4);
+    }
+    // member data pointer
+    {
+        int A_int_1::*fp = &A_int_1::data_;
+        std::function<int& (A_int_1&)> r1(fp);
+        A_int_1 a;
+        assert(r1(a) == 5);
+        r1(a) = 6;
+        assert(r1(a) == 6);
+        std::function<int& (A_int_1*)> r2(fp);
+        A_int_1* ap = &a;
+        assert(r2(ap) == 6);
+        r2(ap) = 7;
+        assert(r2(ap) == 7);
+    }
+}
+
+// 2 arg, return void
+
+void f_void_2(int i, int j)
+{
+    count += i+j;
+}
+
+struct A_void_2
+{
+    void operator()(int i, int j)
+    {
+        count += i+j;
+    }
+
+    void mem1(int i) {count += i;}
+    void mem2(int i) const {count += i;}
+};
+
+void
+test_void_2()
+{
+    int save_count = count;
+    // function
+    {
+        std::function<void (int, int)> r1(f_void_2);
+        int i = 2;
+        int j = 3;
+        r1(i, j);
+        assert(count == save_count+5);
+        save_count = count;
+    }
+    // function pointer
+    {
+        void (*fp)(int, int) = f_void_2;
+        std::function<void (int, int)> r1(fp);
+        int i = 3;
+        int j = 4;
+        r1(i, j);
+        assert(count == save_count+7);
+        save_count = count;
+    }
+    // functor
+    {
+        A_void_2 a0;
+        std::function<void (int, int)> r1(a0);
+        int i = 4;
+        int j = 5;
+        r1(i, j);
+        assert(count == save_count+9);
+        save_count = count;
+    }
+    // member function pointer
+    {
+        void (A_void_2::*fp)(int) = &A_void_2::mem1;
+        std::function<void (A_void_2, int)> r1(fp);
+        A_void_2 a;
+        int i = 3;
+        r1(a, i);
+        assert(count == save_count+3);
+        save_count = count;
+        std::function<void (A_void_2*, int)> r2(fp);
+        A_void_2* ap = &a;
+        r2(ap, i);
+        assert(count == save_count+3);
+        save_count = count;
+    }
+    // const member function pointer
+    {
+        void (A_void_2::*fp)(int) const = &A_void_2::mem2;
+        std::function<void (A_void_2, int)> r1(fp);
+        A_void_2 a;
+        int i = 4;
+        r1(a, i);
+        assert(count == save_count+4);
+        save_count = count;
+        std::function<void (A_void_2*, int)> r2(fp);
+        A_void_2* ap = &a;
+        r2(ap, i);
+        assert(count == save_count+4);
+        save_count = count;
+    }
+}
+
+// 2 arg, return int
+
+int f_int_2(int i, int j)
+{
+    return i+j;
+}
+
+struct A_int_2
+{
+    int operator()(int i, int j)
+    {
+        return i+j;
+    }
+
+    int mem1(int i) {return i+1;}
+    int mem2(int i) const {return i+2;}
+};
+
+void test_int_2()
+{
+    // function
+    {
+        std::function<int (int, int)> r1(f_int_2);
+        int i = 2;
+        int j = 3;
+        assert(r1(i, j) == i+j);
+    }
+    // function pointer
+    {
+        int (*fp)(int, int) = f_int_2;
+        std::function<int (int, int)> r1(fp);
+        int i = 3;
+        int j = 4;
+        assert(r1(i, j) == i+j);
+    }
+    // functor
+    {
+        A_int_2 a0;
+        std::function<int (int, int)> r1(a0);
+        int i = 4;
+        int j = 5;
+        assert(r1(i, j) == i+j);
+    }
+    // member function pointer
+    {
+        int(A_int_2::*fp)(int) = &A_int_2::mem1;
+        std::function<int (A_int_2, int)> r1(fp);
+        A_int_2 a;
+        int i = 3;
+        assert(r1(a, i) == i+1);
+        std::function<int (A_int_2*, int)> r2(fp);
+        A_int_2* ap = &a;
+        assert(r2(ap, i) == i+1);
+    }
+    // const member function pointer
+    {
+        int (A_int_2::*fp)(int) const = &A_int_2::mem2;
+        std::function<int (A_int_2, int)> r1(fp);
+        A_int_2 a;
+        int i = 4;
+        assert(r1(a, i) == i+2);
+        std::function<int (A_int_2*, int)> r2(fp);
+        A_int_2* ap = &a;
+        assert(r2(ap, i) == i+2);
+    }
+}
+
+int main(int, char**)
+{
+    test_void_0();
+    test_int_0();
+    test_void_1();
+    test_int_1();
+    test_void_2();
+    test_int_2();
+
+  return 0;
+}

module/jni/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.mod/assign_F_alloc.pass.cpp

@@ -0,0 +1,68 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// class function<R(ArgTypes...)>
+
+// template<class F, class A> void assign(F&&, const A&);
+//     This call was removed post-C++14
+
+// This test runs in C++03, but we have deprecated using std::function in C++03.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX03_FUNCTION
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+#include "test_allocator.h"
+
+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 main(int, char**)
+{
+#if TEST_STD_VER <= 14
+    {
+    std::function<int(int)> f;
+    f.assign(A(), test_allocator<A>());
+    assert(A::count == 1);
+    assert(f.target<A>());
+    assert(f.target<int(*)(int)>() == 0);
+    }
+    assert(A::count == 0);
+#endif
+
+  return 0;
+}

module/jni/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.mod/swap.pass.cpp

@@ -0,0 +1,200 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// class function<R(ArgTypes...)>
+
+// void swap(function& other);
+
+// This test runs in C++03, but we have deprecated using std::function in C++03.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX03_FUNCTION
+
+#include <functional>
+#include <cassert>
+
+#include "count_new.h"
+
+#include "test_macros.h"
+
+class A {
+  int data_[10];
+
+public:
+  static int count;
+
+  explicit A(int j) {
+    ++count;
+    data_[0] = j;
+  }
+
+  A(const A &a) {
+    ++count;
+    for (int i = 0; i < 10; ++i)
+      data_[i] = a.data_[i];
+  }
+
+  ~A() { --count; }
+
+  int operator()(int i) const {
+    for (int j = 0; j < 10; ++j)
+      i += data_[j];
+    return i;
+  }
+
+  int operator()() const { return -1; }
+  int operator()(int, int) const { return -2; }
+  int operator()(int, int, int) const { return -3; }
+
+  int id() const { return data_[0]; }
+};
+
+int A::count = 0;
+
+int g0() { return 0; }
+int g(int) { return 0; }
+int h(int) { return 1; }
+int g2(int, int) { return 2; }
+int g3(int, int, int) { return 3; }
+
+int main(int, char**) {
+  globalMemCounter.reset();
+  assert(globalMemCounter.checkOutstandingNewEq(0));
+  {
+    std::function<int(int)> f1 = A(1);
+    std::function<int(int)> f2 = A(2);
+    assert(A::count == 2);
+    assert(globalMemCounter.checkOutstandingNewEq(2));
+    RTTI_ASSERT(f1.target<A>()->id() == 1);
+    RTTI_ASSERT(f2.target<A>()->id() == 2);
+    f1.swap(f2);
+    assert(A::count == 2);
+    assert(globalMemCounter.checkOutstandingNewEq(2));
+    RTTI_ASSERT(f1.target<A>()->id() == 2);
+    RTTI_ASSERT(f2.target<A>()->id() == 1);
+  }
+  assert(A::count == 0);
+  assert(globalMemCounter.checkOutstandingNewEq(0));
+  {
+    std::function<int(int)> f1 = A(1);
+    std::function<int(int)> f2 = g;
+    assert(A::count == 1);
+    assert(globalMemCounter.checkOutstandingNewEq(1));
+    RTTI_ASSERT(f1.target<A>()->id() == 1);
+    RTTI_ASSERT(*f2.target<int (*)(int)>() == g);
+    f1.swap(f2);
+    assert(A::count == 1);
+    assert(globalMemCounter.checkOutstandingNewEq(1));
+    RTTI_ASSERT(*f1.target<int (*)(int)>() == g);
+    RTTI_ASSERT(f2.target<A>()->id() == 1);
+  }
+  assert(A::count == 0);
+  assert(globalMemCounter.checkOutstandingNewEq(0));
+  {
+    std::function<int(int)> f1 = g;
+    std::function<int(int)> f2 = A(1);
+    assert(A::count == 1);
+    assert(globalMemCounter.checkOutstandingNewEq(1));
+    RTTI_ASSERT(*f1.target<int (*)(int)>() == g);
+    RTTI_ASSERT(f2.target<A>()->id() == 1);
+    f1.swap(f2);
+    assert(A::count == 1);
+    assert(globalMemCounter.checkOutstandingNewEq(1));
+    RTTI_ASSERT(f1.target<A>()->id() == 1);
+    RTTI_ASSERT(*f2.target<int (*)(int)>() == g);
+  }
+  assert(A::count == 0);
+  assert(globalMemCounter.checkOutstandingNewEq(0));
+  {
+    std::function<int(int)> f1 = g;
+    std::function<int(int)> f2 = h;
+    assert(A::count == 0);
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    RTTI_ASSERT(*f1.target<int (*)(int)>() == g);
+    RTTI_ASSERT(*f2.target<int (*)(int)>() == h);
+    f1.swap(f2);
+    assert(A::count == 0);
+    assert(globalMemCounter.checkOutstandingNewEq(0));
+    RTTI_ASSERT(*f1.target<int (*)(int)>() == h);
+    RTTI_ASSERT(*f2.target<int (*)(int)>() == g);
+  }
+  assert(A::count == 0);
+  assert(globalMemCounter.checkOutstandingNewEq(0));
+  {
+    std::function<int(int)> f1 = A(1);
+    assert(A::count == 1);
+    {
+      DisableAllocationGuard guard;
+      ((void)guard);
+      f1.swap(f1);
+    }
+    assert(A::count == 1);
+    RTTI_ASSERT(f1.target<A>()->id() == 1);
+  }
+  assert(A::count == 0);
+  assert(globalMemCounter.checkOutstandingNewEq(0));
+  {
+    std::function<int()> f1 = g0;
+    DisableAllocationGuard guard;
+    ((void)guard);
+    f1.swap(f1);
+    RTTI_ASSERT(*f1.target<int (*)()>() == g0);
+  }
+  assert(globalMemCounter.checkOutstandingNewEq(0));
+  {
+    std::function<int(int, int)> f1 = g2;
+    DisableAllocationGuard guard;
+    ((void)guard);
+    f1.swap(f1);
+    RTTI_ASSERT(*f1.target<int (*)(int, int)>() == g2);
+  }
+  assert(globalMemCounter.checkOutstandingNewEq(0));
+  {
+    std::function<int(int, int, int)> f1 = g3;
+    DisableAllocationGuard guard;
+    ((void)guard);
+    f1.swap(f1);
+    RTTI_ASSERT(*f1.target<int (*)(int, int, int)>() == g3);
+  }
+  assert(globalMemCounter.checkOutstandingNewEq(0));
+  {
+    std::function<int()> f1 = A(1);
+    assert(A::count == 1);
+    DisableAllocationGuard guard;
+    ((void)guard);
+    f1.swap(f1);
+    assert(A::count == 1);
+    RTTI_ASSERT(f1.target<A>()->id() == 1);
+  }
+  assert(globalMemCounter.checkOutstandingNewEq(0));
+  assert(A::count == 0);
+  {
+    std::function<int(int, int)> f1 = A(2);
+    assert(A::count == 1);
+    DisableAllocationGuard guard;
+    ((void)guard);
+    f1.swap(f1);
+    assert(A::count == 1);
+    RTTI_ASSERT(f1.target<A>()->id() == 2);
+  }
+  assert(globalMemCounter.checkOutstandingNewEq(0));
+  assert(A::count == 0);
+  {
+    std::function<int(int, int, int)> f1 = A(3);
+    assert(A::count == 1);
+    DisableAllocationGuard guard;
+    ((void)guard);
+    f1.swap(f1);
+    assert(A::count == 1);
+    RTTI_ASSERT(f1.target<A>()->id() == 3);
+  }
+  assert(globalMemCounter.checkOutstandingNewEq(0));
+  assert(A::count == 0);
+
+  return 0;
+}

module/jni/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.nullptr/operator_==.pass.cpp

@@ -0,0 +1,47 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// class function<R(ArgTypes...)>
+
+// template <MoveConstructible R, MoveConstructible ... ArgTypes>
+//   bool operator==(const function<R(ArgTypes...)>&, nullptr_t);
+//
+// template <MoveConstructible R, MoveConstructible ... ArgTypes>
+//   bool operator==(nullptr_t, const function<R(ArgTypes...)>&);
+//
+// template <MoveConstructible R, MoveConstructible ... ArgTypes>
+//   bool operator!=(const function<R(ArgTypes...)>&, nullptr_t);
+//
+// template <MoveConstructible  R, MoveConstructible ... ArgTypes>
+//   bool operator!=(nullptr_t, const function<R(ArgTypes...)>&);
+
+// This test runs in C++03, but we have deprecated using std::function in C++03.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX03_FUNCTION
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+int g(int) {return 0;}
+
+int main(int, char**)
+{
+    {
+    std::function<int(int)> f;
+    assert(f == nullptr);
+    assert(nullptr == f);
+    f = g;
+    assert(f != nullptr);
+    assert(nullptr != f);
+    }
+
+  return 0;
+}

module/jni/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.targ/target.pass.cpp

@@ -0,0 +1,101 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <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;
+
+// This test runs in C++03, but we have deprecated using std::function in C++03.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX03_FUNCTION
+
+// UNSUPPORTED: no-rtti
+
+#include <functional>
+#include <new>
+#include <cstdlib>
+#include <cassert>
+
+#include "test_macros.h"
+
+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(int, char**)
+{
+    {
+    std::function<int(int)> f = A();
+    assert(A::count == 1);
+    assert(f.target<A>());
+    assert(f.target<int(*)(int)>() == 0);
+    assert(f.target<int>() == nullptr);
+    }
+    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(f.target<int>() == nullptr);
+    }
+    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(f.target<int>() == nullptr);
+    }
+    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(f.target<int>() == nullptr);
+    }
+    assert(A::count == 0);
+
+  return 0;
+}

module/jni/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/func.wrap.func.targ/target_type.pass.cpp

@@ -0,0 +1,69 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// class function<R(ArgTypes...)>
+
+// const std::type_info& target_type() const;
+
+// This test runs in C++03, but we have deprecated using std::function in C++03.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX03_FUNCTION
+
+// UNSUPPORTED: no-rtti
+
+#include <functional>
+#include <typeinfo>
+#include <cassert>
+
+#include "test_macros.h"
+
+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(int, char**)
+{
+    {
+    std::function<int(int)> f = A();
+    assert(f.target_type() == typeid(A));
+    }
+    {
+    std::function<int(int)> f;
+    assert(f.target_type() == typeid(void));
+    }
+
+  return 0;
+}

module/jni/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/function_types.h

@@ -0,0 +1,65 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef FUNCTION_TYPES_H
+#define FUNCTION_TYPES_H
+
+
+class FunctionObject
+{
+    int data_[10]; // dummy variable to prevent small object optimization in
+                   // std::function
+public:
+    static int count;
+
+    FunctionObject() {
+        ++count;
+        for (int i = 0; i < 10; ++i) data_[i] = i;
+    }
+
+    FunctionObject(const FunctionObject&) {++count;}
+    ~FunctionObject() {--count; ((void)data_); }
+
+    int operator()() const { return 42; }
+    int operator()(int i) const { return i; }
+    int operator()(int i, int) const { return i; }
+    int operator()(int i, int, int) const { return i; }
+};
+
+int FunctionObject::count = 0;
+
+class MemFunClass
+{
+    int data_[10]; // dummy variable to prevent small object optimization in
+                   // std::function
+public:
+    static int count;
+
+    MemFunClass() {
+        ++count;
+        for (int i = 0; i < 10; ++i) data_[i] = 0;
+    }
+
+    MemFunClass(const MemFunClass&) {++count; ((void)data_); }
+
+    ~MemFunClass() {--count;}
+
+    int foo() const { return 42; }
+    int foo(int i) const { return i; }
+    int foo(int i, int) const { return i; }
+    int foo(int i, int, int) const { return i; }
+};
+
+int MemFunClass::count = 0;
+
+int FreeFunction() { return 42; }
+int FreeFunction(int i) {return i;}
+int FreeFunction(int i, int) { return i; }
+int FreeFunction(int i, int, int) { return i; }
+
+#endif // FUNCTION_TYPES_H

module/jni/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/noncopyable_return_type.pass.cpp

@@ -0,0 +1,145 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14
+
+// FIXME: Building this in MSVC mode fails when instantiating two cases of
+// std::function that only differ in constness of the return type, with this
+// error:
+// include/c++/v1/__functional/function.h:254:31: error: definition with same mangled name '??0?$__base@$$A6AXXZ@__function@__1@std@@QEAA@XZ' as another definition
+//     _LIBCPP_INLINE_VISIBILITY __base() {}
+// include/c++/v1/__functional/function.h:254:31: note: previous definition is here
+// XFAIL: msvc
+
+// <functional>
+
+#include <functional>
+#include <cassert>
+
+#include "test_macros.h"
+
+// Prevent warning on the `const NonCopyable()` function type.
+TEST_CLANG_DIAGNOSTIC_IGNORED("-Wignored-qualifiers")
+TEST_GCC_DIAGNOSTIC_IGNORED("-Wignored-qualifiers")
+
+struct NonCopyable {
+    NonCopyable() = default;
+    NonCopyable(NonCopyable&&) = delete;
+    friend bool operator==(NonCopyable, NonCopyable) { return true; }
+};
+
+struct LargeLambda {
+    int a[100];
+    NonCopyable operator()() const { return NonCopyable(); }
+    NonCopyable operator()(int) const { return NonCopyable(); }
+    NonCopyable f() const { return NonCopyable(); }
+};
+
+void test()
+{
+    std::function<NonCopyable()> f1a = []() { return NonCopyable(); };
+    std::function<NonCopyable()> f2a = +[]() { return NonCopyable(); };
+    std::function<NonCopyable()> f3a = LargeLambda();
+    std::function<NonCopyable()> f4a = std::ref(f1a);
+    std::function<NonCopyable(int)> f1b = [](int) { return NonCopyable(); };
+    std::function<NonCopyable(int)> f2b = +[](int) { return NonCopyable(); };
+    std::function<NonCopyable(int)> f3b = LargeLambda();
+    std::function<NonCopyable(int)> f4b = std::ref(f1b);
+
+    assert(f1a() == f2a());
+    assert(f3a() == f4a());
+    assert(f1b(1) == f2b(1));
+    assert(f3b(1) == f4b(1));
+}
+
+void const_test()
+{
+    std::function<const NonCopyable()> f1a = []() { return NonCopyable(); };
+    std::function<const NonCopyable()> f2a = +[]() { return NonCopyable(); };
+    std::function<const NonCopyable()> f3a = LargeLambda();
+    std::function<const NonCopyable()> f4a = std::ref(f1a);
+    std::function<const NonCopyable(int)> f1b = [](int) { return NonCopyable(); };
+    std::function<const NonCopyable(int)> f2b = +[](int) { return NonCopyable(); };
+    std::function<const NonCopyable(int)> f3b = LargeLambda();
+    std::function<const NonCopyable(int)> f4b = std::ref(f1b);
+
+    assert(f1a() == f2a());
+    assert(f3a() == f4a());
+    assert(f1b(1) == f2b(1));
+    assert(f3b(1) == f4b(1));
+}
+
+void void_test()
+{
+    std::function<void()> f1a = []() { return NonCopyable(); };
+    std::function<void()> f2a = +[]() { return NonCopyable(); };
+    std::function<void()> f3a = LargeLambda();
+    std::function<void()> f4a = std::ref(f1a);
+    std::function<void(int)> f1b = [](int) { return NonCopyable(); };
+    std::function<void(int)> f2b = +[](int) { return NonCopyable(); };
+    std::function<void(int)> f3b = LargeLambda();
+    std::function<void(int)> f4b = std::ref(f1b);
+}
+
+void const_void_test()
+{
+    std::function<const void()> f1a = []() { return NonCopyable(); };
+    std::function<const void()> f2a = +[]() { return NonCopyable(); };
+    std::function<const void()> f3a = LargeLambda();
+    std::function<const void()> f4a = std::ref(f1a);
+    std::function<const void(int)> f1b = [](int) { return NonCopyable(); };
+    std::function<const void(int)> f2b = +[](int) { return NonCopyable(); };
+    std::function<const void(int)> f3b = LargeLambda();
+    std::function<const void(int)> f4b = std::ref(f1b);
+}
+
+void member_pointer_test()
+{
+    std::function<NonCopyable(LargeLambda*)> f1a = &LargeLambda::f;
+    std::function<NonCopyable(LargeLambda&)> f2a = &LargeLambda::f;
+    LargeLambda ll;
+    assert(f1a(&ll) == f2a(ll));
+
+    static_assert(std::is_convertible_v<NonCopyable (LargeLambda::*)(), std::function<NonCopyable(LargeLambda*)>>);
+    static_assert(std::is_convertible_v<NonCopyable (LargeLambda::*)(), std::function<NonCopyable(LargeLambda&)>>);
+    static_assert(std::is_convertible_v<NonCopyable (LargeLambda::*)() const, std::function<NonCopyable(LargeLambda*)>>);
+    static_assert(std::is_convertible_v<NonCopyable (LargeLambda::*)() const, std::function<NonCopyable(LargeLambda&)>>);
+    static_assert(std::is_convertible_v<NonCopyable (LargeLambda::*)() const, std::function<NonCopyable(const LargeLambda*)>>);
+    static_assert(std::is_convertible_v<NonCopyable (LargeLambda::*)() const, std::function<NonCopyable(const LargeLambda&)>>);
+
+    // Verify we have SFINAE against invoking a pointer-to-data-member in a way that would have to copy the NonCopyable.
+    static_assert(!std::is_convertible_v<NonCopyable LargeLambda::*, std::function<NonCopyable(LargeLambda*)>>);
+    static_assert(!std::is_convertible_v<NonCopyable LargeLambda::*, std::function<NonCopyable(LargeLambda&)>>);
+    static_assert(!std::is_convertible_v<NonCopyable LargeLambda::*, std::function<NonCopyable&(const LargeLambda&)>>);
+    static_assert(std::is_convertible_v<NonCopyable LargeLambda::*, std::function<NonCopyable&(LargeLambda*)>>);
+    static_assert(std::is_convertible_v<NonCopyable LargeLambda::*, std::function<NonCopyable&(LargeLambda&)>>);
+    static_assert(std::is_convertible_v<NonCopyable LargeLambda::*, std::function<const NonCopyable&(const LargeLambda&)>>);
+}
+
+void ctad_test()
+{
+    std::function f1a = []() { return NonCopyable(); };
+    std::function f2a = +[]() { return NonCopyable(); };
+    std::function f1b = [](int) { return NonCopyable(); };
+    std::function f2b = +[](int) { return NonCopyable(); };
+    static_assert(std::is_same_v<decltype(f1a), std::function<NonCopyable()>>);
+    static_assert(std::is_same_v<decltype(f2a), std::function<NonCopyable()>>);
+    static_assert(std::is_same_v<decltype(f1b), std::function<NonCopyable(int)>>);
+    static_assert(std::is_same_v<decltype(f2b), std::function<NonCopyable(int)>>);
+}
+
+int main(int, char**)
+{
+    test();
+    const_test();
+    void_test();
+    const_void_test();
+    member_pointer_test();
+    ctad_test();
+    return 0;
+}

module/jni/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/robust_against_adl.pass.cpp

@@ -0,0 +1,53 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// Address Sanitizer doesn't instrument weak symbols on Linux. When a key
+// function is defined for bad_function_call's vtable, its typeinfo and vtable
+// will be defined as strong symbols in the library and weak symbols in other
+// translation units. Only the strong symbol will be instrumented, increasing
+// its size (due to the redzone) and leading to a serious ODR violation
+// resulting in a crash.
+// Some relevant bugs:
+// https://github.com/google/sanitizers/issues/1017
+// https://github.com/google/sanitizers/issues/619
+// https://github.com/google/sanitizers/issues/398
+// https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68016
+// UNSUPPORTED: c++03, asan
+
+// <functional>
+
+#include <functional>
+
+#include "test_macros.h"
+
+struct Incomplete;
+template<class T> struct Holder { T t; };
+
+typedef Holder<Incomplete> *Ptr;
+
+template<class T>
+struct Callable {
+    void operator()() const { }
+};
+
+Ptr no_args() { return nullptr; }
+Ptr one_arg(Ptr p) { return p; }
+Ptr two_args(Ptr p, Ptr) { return p; }
+Ptr three_args(Ptr p, Ptr, Ptr) { return p; }
+Ptr four_args(Ptr p, Ptr, Ptr, Ptr) { return p; }
+
+void one_arg_void(Ptr) { }
+
+int main(int, char**) {
+    Ptr x = nullptr;
+    std::function<Ptr()> f(no_args); f();
+    std::function<Ptr(Ptr)> g(one_arg); g(x);
+    std::function<void(Ptr)> h(one_arg_void); h(x);
+    std::function<void()> i(Callable<Holder<Incomplete>>{});
+    return 0;
+}

module/jni/libcxx/test/std/utilities/function.objects/func.wrap/func.wrap.func/types.pass.cpp

@@ -0,0 +1,122 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+// <functional>
+
+// template<Returnable R, CopyConstructible... ArgTypes>
+// class function<R(ArgTypes...)> {
+// public:
+//   typedef R result_type;
+//   typedef T1 argument_type;          // iff sizeof...(ArgTypes) == 1 and
+//                                      // the type in ArgTypes is T1
+//   typedef T1 first_argument_type;    // iff sizeof...(ArgTypes) == 2 and
+//                                      // ArgTypes contains T1 and T2
+//   typedef T2 second_argument_type;   // iff sizeof...(ArgTypes) == 2 and
+//                                      // ArgTypes contains T1 and T2
+//  ...
+//  };
+
+// This test runs in C++03, but we have deprecated using std::function in C++03.
+// ADDITIONAL_COMPILE_FLAGS: -D_LIBCPP_DISABLE_DEPRECATION_WARNINGS -D_LIBCPP_ENABLE_CXX03_FUNCTION
+
+#include <functional>
+#include <type_traits>
+
+#include "test_macros.h"
+
+
+template <typename T>
+class has_argument_type
+{
+    typedef char yes;
+    typedef long no;
+
+    template <typename C> static yes check( typename C::argument_type * );
+    template <typename C> static no  check(...);
+public:
+    enum { value = sizeof(check<T>(0)) == sizeof(yes) };
+};
+
+template <typename T>
+class has_first_argument_type
+{
+    typedef char yes;
+    typedef long no;
+
+    template <typename C> static yes check( typename C::first_argument_type * );
+    template <typename C> static no  check(...);
+public:
+    enum { value = sizeof(check<T>(0)) == sizeof(yes) };
+};
+
+
+template <typename T>
+class has_second_argument_type
+{
+    typedef char yes;
+    typedef long no;
+
+    template <typename C> static yes check( typename C::second_argument_type *);
+    template <typename C> static no  check(...);
+public:
+    enum { value = sizeof(check<T>(0)) == sizeof(yes) };
+};
+
+template <class F, class return_type>
+void test_nullary_function ()
+{
+#if TEST_STD_VER <= 17
+    static_assert((std::is_same<typename F::result_type, return_type>::value), "" );
+#endif
+    static_assert((!has_argument_type<F>::value), "" );
+    static_assert((!has_first_argument_type<F>::value), "" );
+    static_assert((!has_second_argument_type<F>::value), "" );
+}
+
+template <class F, class return_type, class arg_type>
+void test_unary_function ()
+{
+#if TEST_STD_VER <= 17
+    static_assert((std::is_same<typename F::result_type, return_type>::value), "" );
+    static_assert((std::is_same<typename F::argument_type,  arg_type>::value), "" );
+#endif
+    static_assert((!has_first_argument_type<F>::value), "" );
+    static_assert((!has_second_argument_type<F>::value), "" );
+}
+
+template <class F, class return_type, class arg_type1, class arg_type2>
+void test_binary_function ()
+{
+#if TEST_STD_VER <= 17
+    static_assert((std::is_same<typename F::result_type,        return_type>::value), "" );
+    static_assert((std::is_same<typename F::first_argument_type,  arg_type1>::value), "" );
+    static_assert((std::is_same<typename F::second_argument_type, arg_type2>::value), "" );
+#endif
+    static_assert((!has_argument_type<F>::value), "" );
+}
+
+template <class F, class return_type>
+void test_other_function ()
+{
+#if TEST_STD_VER <= 17
+    static_assert((std::is_same<typename F::result_type, return_type>::value), "" );
+#endif
+    static_assert((!has_argument_type<F>::value), "" );
+    static_assert((!has_first_argument_type<F>::value), "" );
+    static_assert((!has_second_argument_type<F>::value), "" );
+}
+
+int main(int, char**)
+{
+    test_nullary_function<std::function<int()>, int>();
+    test_unary_function  <std::function<double(int)>, double, int>();
+    test_binary_function <std::function<double(int, char)>, double, int, char>();
+    test_other_function  <std::function<double(int, char, double)>, double>();
+
+  return 0;
+}