[libcxx] Rework sized delete.

[EricWF]

Summary

This patch does 2 main things:

1. Enable sized delete if the feature test macro __cpp_sized_deallocation is enabled.
2. Rework and cleanup all of the sized delete tests.

[EricWF]

I fixed the tests against GCC 5.1 which supports both -fsized-deallocation and sized deallocation in C++14.

[mclow.lists]

I think that the language specific files could be named sized_delete_array11 and sized_delete_array14 instead of using the ++ in the file names.

Other than that (and the inline nit), these look good to me.

test/std/language.support/support.dynamic/new.delete/new.delete.array/sized_delete_array_calls_unsized_delete_array.pass.cpp

55

Humor my OCD, please.
Make these match all the others:
1 == delete_called and 0 == delete_nothrow_called

[EricWF]

Address mclows comments.

[mclow.lists]

LGTM.

include/new

 _LIBCPP_NEW_DELETE_VIS void* operator new(std::size_t __sz, const std::nothrow_t&) _NOEXCEPT _NOALIAS;
 _LIBCPP_NEW_DELETE_VIS void  operator delete(void* __p) _NOEXCEPT;
 _LIBCPP_NEW_DELETE_VIS void  operator delete(void* __p, const std::nothrow_t&) _NOEXCEPT;
-#if defined(_LIBCPP_BUILDING_NEW) || _LIBCPP_STD_VER >= 14
+#if defined(_LIBCPP_BUILDING_NEW) || _LIBCPP_STD_VER >= 14 || \
+    (defined(__cpp_sized_deallocation) && __cpp_sized_deallocation >= 201309)
 _LIBCPP_NEW_DELETE_VIS void  operator delete(void* __p, std::size_t __sz) _NOEXCEPT;
 #endif
 

 _LIBCPP_NEW_DELETE_VIS void* operator new[](std::size_t __sz, const std::nothrow_t&) _NOEXCEPT _NOALIAS;
 _LIBCPP_NEW_DELETE_VIS void  operator delete[](void* __p) _NOEXCEPT;
 _LIBCPP_NEW_DELETE_VIS void  operator delete[](void* __p, const std::nothrow_t&) _NOEXCEPT;
-#if defined(_LIBCPP_BUILDING_NEW) || _LIBCPP_STD_VER >= 14
+#if defined(_LIBCPP_BUILDING_NEW) || _LIBCPP_STD_VER >= 14 || \
+    (defined(__cpp_sized_deallocation) && __cpp_sized_deallocation >= 201309)
 _LIBCPP_NEW_DELETE_VIS void  operator delete[](void* __p, std::size_t __sz) _NOEXCEPT;
 #endif
 

test/std/language.support/support.dynamic/new.delete/new.delete.array/sized_delete_array.pass.cpp

-//===----------------------------------------------------------------------===//
-//
-//                     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.
-//
-//===----------------------------------------------------------------------===//
-
-// test sized operator delete[] by replacing unsized operator delete[].
-
-// UNSUPPORTED: sanitizer-new-delete
-
-#include <new>
-#include <cstddef>
-#include <cstdlib>
-#include <cassert>
-#include <limits>
-
-int delete_called = 0;
-int delete_nothrow_called = 0;
-
-void operator delete[](void* p) throw()
-{
-    ++delete_called;
-    std::free(p);
-}
-
-void operator delete[](void* p, const std::nothrow_t&) throw()
-{
-    ++delete_nothrow_called;
-    std::free(p);
-}
-
-int new_handler_called = 0;
-
-void new_handler()
-{
-    ++new_handler_called;
-    std::set_new_handler(0);
-}
-
-int A_constructed = 0;
-
-struct A
-{
-    A() {++A_constructed;}
-    ~A() {--A_constructed;}
-};
-
-int main()
-{
-    std::set_new_handler(new_handler);
-    try
-    {
-        void* vp = operator new [] (std::numeric_limits<std::size_t>::max());
-        assert(false);
-    }
-    catch (std::bad_alloc&)
-    {
-        assert(new_handler_called == 1);
-    }
-    catch (...)
-    {
-        assert(false);
-    }
-    A* ap = new A[3];
-    assert(ap);
-    assert(A_constructed == 3);
-    assert(!delete_called);
-    assert(!delete_nothrow_called);
-    delete [] ap;
-    assert(A_constructed == 0);
-    assert(delete_called == 1);
-    assert(!delete_nothrow_called);
-}

test/std/language.support/support.dynamic/new.delete/new.delete.array/sized_delete_array11.pass.cpp

+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// test sized operator delete[] replacement.
+
+// Note that sized delete operator definitions below are simply ignored
+// when sized deallocation is not supported, e.g., prior to C++14.
+
+// UNSUPPORTED: c++14, c++1z
+// UNSUPPORTED: sanitizer-new-delete
+
+#include <new>
+#include <cstddef>
+#include <cstdlib>
+#include <cassert>
+
+int unsized_delete_called = 0;
+int unsized_delete_nothrow_called = 0;
+int sized_delete_called = 0;
+
+void operator delete[](void* p) throw()
+{
+    ++unsized_delete_called;
+    std::free(p);
+}
+
+void operator delete[](void* p, const std::nothrow_t&) throw()
+{
+    ++unsized_delete_nothrow_called;
+    std::free(p);
+}
+
+void operator delete[](void* p, std::size_t) throw()
+{
+    ++sized_delete_called;
+    std::free(p);
+}
+
+// NOTE: Use a class with a non-trivial destructor as the test type in order
+// to ensure the correct overload is called.
+// C++14 5.3.5 [expr.delete]p10
+// - If the type is complete and if, for the second alternative (delete array)
+//   only, the operand is a pointer to a class type with a non-trivial
+//   destructor or a (possibly multi-dimensional) array thereof, the function
+//   with two parameters is selected.
+// - Otherwise, it is unspecified which of the two deallocation functions is
+//   selected.
+struct A { ~A() {} };
+
+int main()
+{
+
+    A* x = new A[3];
+    assert(0 == unsized_delete_called);
+    assert(0 == unsized_delete_nothrow_called);
+    assert(0 == sized_delete_called);
+
+    delete [] x;
+    assert(1 == unsized_delete_called);
+    assert(0 == sized_delete_called);
+    assert(0 == unsized_delete_nothrow_called);
+}

test/std/language.support/support.dynamic/new.delete/new.delete.array/sized_delete_array14.pass.cpp

+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// test sized operator delete[] replacement.
+
+// UNSUPPORTED: sanitizer-new-delete, c++98, c++03, c++11
+
+// TODO: Clang does not enable sized-deallocation in c++14 and behond by
+// default. It is only enabled when -fsized-deallocation is given.
+// XFAIL: clang
+
+// TODO: GCC 4.9.1 does not support sized-deallocation in c++14. However
+// GCC 5.1 does.
+// XFAIL: gcc-4.8, gcc-4.9
+
+#include <new>
+#include <cstddef>
+#include <cstdlib>
+#include <cassert>
+
+int unsized_delete_called = 0;
+int unsized_delete_nothrow_called = 0;
+int sized_delete_called = 0;
+
+void operator delete[](void* p) throw()
+{
+    ++unsized_delete_called;
+    std::free(p);
+}
+
+void operator delete[](void* p, const std::nothrow_t&) throw()
+{
+    ++unsized_delete_nothrow_called;
+    std::free(p);
+}
+
+void operator delete[](void* p, std::size_t) throw()
+{
+    ++sized_delete_called;
+    std::free(p);
+}
+
+// NOTE: Use a class with a non-trivial destructor as the test type in order
+// to ensure the correct overload is called.
+// C++14 5.3.5 [expr.delete]p10
+// - If the type is complete and if, for the second alternative (delete array)
+//   only, the operand is a pointer to a class type with a non-trivial
+//   destructor or a (possibly multi-dimensional) array thereof, the function
+//   with two parameters is selected.
+// - Otherwise, it is unspecified which of the two deallocation functions is
+//   selected.
+struct A { ~A() {} };
+
+int main()
+{
+    A* x = new A[3];
+    assert(0 == unsized_delete_called);
+    assert(0 == unsized_delete_nothrow_called);
+    assert(0 == sized_delete_called);
+
+    delete [] x;
+    assert(0 == unsized_delete_called);
+    assert(0 == unsized_delete_nothrow_called);
+    assert(1 == sized_delete_called);
+}

test/std/language.support/support.dynamic/new.delete/new.delete.array/sized_delete_array_calls_unsized_delete_array.pass.cpp

+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// test sized operator [] delete calls the unsized operator [] delete.
+// When sized operator delete [] is not available (ex C++11) then the unsized
+// operator delete [] is called directly.
+
+// UNSUPPORTED: sanitizer-new-delete
+
+#include <new>
+#include <cstddef>
+#include <cstdlib>
+#include <cassert>
+
+int delete_called = 0;
+int delete_nothrow_called = 0;
+
+void operator delete[](void* p) throw()
+{
+    ++delete_called;
+    std::free(p);
+}
+
+void operator delete[](void* p, const std::nothrow_t&) throw()
+{
+    ++delete_nothrow_called;
+    std::free(p);
+}
+
+// NOTE: Use a class with a non-trivial destructor as the test type in order
+// to ensure the correct overload is called.
+// C++14 5.3.5 [expr.delete]p10
+// - If the type is complete and if, for the second alternative (delete array)
+//   only, the operand is a pointer to a class type with a non-trivial
+//   destructor or a (possibly multi-dimensional) array thereof, the function
+//   with two parameters is selected.
+// - Otherwise, it is unspecified which of the two deallocation functions is
+//   selected.
+struct A { ~A() {} };
+
+int main()
+{
+    A* x = new A[3];
+    assert(0 == delete_called);
+    assert(0 == delete_nothrow_called);
+
+    delete [] x;
+    assert(1 == delete_called);
+    assert(0 == delete_nothrow_called);
+}

test/std/language.support/support.dynamic/new.delete/new.delete.array/sized_delete_array_fsizeddeallocation.sh.cpp

+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// test sized operator delete[] replacement.
+
+// Note that sized delete operator definitions below are simply ignored
+// when sized deallocation is not supported, e.g., prior to C++14.
+
+// UNSUPPORTED: sanitizer-new-delete
+
+// TODO: -fsized-deallocation was only added to GCC in 5.1.
+// XFAIL: gcc-4.8, gcc-4.9
+
+// RUN: %build -fsized-deallocation
+// RUN: %run
+
+#if !defined(__cpp_sized_deallocation)
+# error __cpp_sized_deallocation should be defined
+#endif
+
+#if !(__cpp_sized_deallocation >= 201309L)
+# error expected __cpp_sized_deallocation >= 201309L
+#endif
+
+#include <new>
+#include <cstddef>
+#include <cstdlib>
+#include <cassert>
+
+int unsized_delete_called = 0;
+int unsized_delete_nothrow_called = 0;
+int sized_delete_called = 0;
+
+void operator delete[](void* p) throw()
+{
+    ++unsized_delete_called;
+    std::free(p);
+}
+
+void operator delete[](void* p, const std::nothrow_t&) throw()
+{
+    ++unsized_delete_nothrow_called;
+    std::free(p);
+}
+
+void operator delete[](void* p, std::size_t) noexcept
+{
+    ++sized_delete_called;
+    std::free(p);
+}
+
+// NOTE: Use a class with a non-trivial destructor as the test type in order
+// to ensure the correct overload is called.
+// C++14 5.3.5 [expr.delete]p10
+// - If the type is complete and if, for the second alternative (delete array)
+//   only, the operand is a pointer to a class type with a non-trivial
+//   destructor or a (possibly multi-dimensional) array thereof, the function
+//   with two parameters is selected.
+// - Otherwise, it is unspecified which of the two deallocation functions is
+//   selected.
+struct A { ~A() {} };
+
+int main()
+{
+    A* x = new A[3];
+    assert(0 == unsized_delete_called);
+    assert(0 == unsized_delete_nothrow_called);
+    assert(0 == sized_delete_called);
+
+    delete [] x;
+    assert(0 == unsized_delete_called);
+    assert(0 == unsized_delete_nothrow_called);
+    assert(1 == sized_delete_called);
+}

test/std/language.support/support.dynamic/new.delete/new.delete.array/sized_delete_array_nothrow.pass.cpp

-//===----------------------------------------------------------------------===//
-//
-//                     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.
-//
-//===----------------------------------------------------------------------===//
-
-// test nothrow sized operator delete[] by replacing
-// nothrow unsized operator delete[].
-
-// UNSUPPORTED: sanitizer-new-delete
-
-#include <new>
-#include <cstddef>
-#include <cstdlib>
-#include <cassert>
-#include <limits>
-
-int delete_called = 0;
-int delete_nothrow_called = 0;
-
-void operator delete[](void* p) throw()
-{
-    ++delete_called;
-    std::free(p);
-}
-
-void operator delete[](void* p, const std::nothrow_t&) throw()
-{
-    ++delete_nothrow_called;
-    std::free(p);
-}
-
-int new_handler_called = 0;
-
-void new_handler()
-{
-    ++new_handler_called;
-    std::set_new_handler(0);
-}
-
-bool A_constructed = false;
-
-struct A
-{
-    A() {A_constructed = true;}
-    ~A() {A_constructed = false;}
-};
-
-struct BadA : public A {
-  BadA() { throw std::bad_alloc(); }
-};
-
-int main()
-{
-    std::set_new_handler(new_handler);
-    try
-    {
-        void*volatile vp = operator new [] (std::numeric_limits<std::size_t>::max(), std::nothrow);
-        assert(new_handler_called == 1);
-        assert(vp == 0);
-    }
-    catch (...)
-    {
-        assert(false);
-    }
-    try
-    {
-        A* ap = new(std::nothrow) BadA [3];
-        assert(false);
-    }
-    catch (...)
-    {
-        assert(!A_constructed);
-        assert(!delete_called);
-        assert(delete_nothrow_called == 1);
-    }
-}

test/std/language.support/support.dynamic/new.delete/new.delete.array/sized_delete_array_replace.pass.cpp

-//===----------------------------------------------------------------------===//
-//
-//                     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.
-//
-//===----------------------------------------------------------------------===//
-
-// test sized operator delete[] replacement.
-
-// Note that sized delete operator definitions below are simply ignored
-// when sized deallocation is not supported, e.g., prior to C++14.
-
-// UNSUPPORTED: sanitizer-new-delete
-
-#include <new>
-#include <cstddef>
-#include <cstdlib>
-#include <cassert>
-#include <limits>
-
-int unsized_delete_called = 0;
-int unsized_delete_nothrow_called = 0;
-int sized_delete_called = 0;
-int sized_delete_nothrow_called = 0;
-
-void operator delete[](void* p) throw()
-{
-    ++unsized_delete_called;
-    std::free(p);
-}
-
-void operator delete[](void* p, const std::nothrow_t&) throw()
-{
-    ++unsized_delete_nothrow_called;
-    std::free(p);
-}
-
-void operator delete[](void* p, std::size_t) throw()
-{
-    ++sized_delete_called;
-    std::free(p);
-}
-
-void operator delete[](void* p, std::size_t, const std::nothrow_t&) throw()
-{
-    ++sized_delete_nothrow_called;
-    std::free(p);
-}
-
-int new_handler_called = 0;
-
-void new_handler()
-{
-    ++new_handler_called;
-    std::set_new_handler(0);
-}
-
-int A_constructed = 0;
-
-struct A
-{
-    A() {++A_constructed;}
-    ~A() {--A_constructed;}
-};
-
-int main()
-{
-    std::set_new_handler(new_handler);
-    try
-    {
-        void* vp = operator new [] (std::numeric_limits<std::size_t>::max());
-        assert(false);
-    }
-    catch (std::bad_alloc&)
-    {
-        assert(new_handler_called == 1);
-    }
-    catch (...)
-    {
-        assert(false);
-    }
-    A* ap = new A[3];
-    assert(ap);
-    assert(A_constructed == 3);
-    assert(!unsized_delete_called);
-    assert(!unsized_delete_nothrow_called);
-    assert(!sized_delete_called);
-    assert(!sized_delete_nothrow_called);
-    delete [] ap;
-    assert(A_constructed == 0);
-#if _LIBCPP_STD_VER >= 14
-    assert(!unsized_delete_called);
-    assert(sized_delete_called == 1);
-#else // if _LIBCPP_STD_VER < 14
-    assert(unsized_delete_called == 1);
-    assert(!sized_delete_called);
-#endif
-    assert(!unsized_delete_nothrow_called);
-    assert(!sized_delete_nothrow_called);
-}

test/std/language.support/support.dynamic/new.delete/new.delete.single/sized_delete.pass.cpp

-//===----------------------------------------------------------------------===//
-//
-//                     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.
-//
-//===----------------------------------------------------------------------===//
-
-// test sized operator delete by replacing unsized operator delete.
-
-// UNSUPPORTED: sanitizer-new-delete
-
-#include <new>
-#include <cstddef>
-#include <cstdlib>
-#include <cassert>
-#include <limits>
-
-int delete_called = 0;
-int delete_nothrow_called = 0;
-
-void operator delete(void* p) throw()
-{
-    ++delete_called;
-    std::free(p);
-}
-
-void operator delete(void* p, const std::nothrow_t&) throw()
-{
-    ++delete_nothrow_called;
-    std::free(p);
-}
-
-int new_handler_called = 0;
-
-void new_handler()
-{
-    ++new_handler_called;
-    std::set_new_handler(0);
-}
-
-bool A_constructed = false;
-
-struct A
-{
-    A() {A_constructed = true;}
-    ~A() {A_constructed = false;}
-};
-
-int main()
-{
-    std::set_new_handler(new_handler);
-    try
-    {
-        void* vp = operator new (std::numeric_limits<std::size_t>::max());
-        assert(false);
-    }
-    catch (std::bad_alloc&)
-    {
-        assert(new_handler_called == 1);
-    }
-    catch (...)
-    {
-        assert(false);
-    }
-    A* ap = new A;
-    assert(ap);
-    assert(A_constructed);
-    assert(!delete_called);
-    assert(!delete_nothrow_called);
-    delete ap;
-    assert(!A_constructed);
-    assert(delete_called == 1);
-    assert(!delete_nothrow_called);
-}

test/std/language.support/support.dynamic/new.delete/new.delete.single/sized_delete11.pass.cpp

+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// test sized operator delete replacement.
+
+// Note that sized delete operator definitions below are simply ignored
+// when sized deallocation is not supported, e.g., prior to C++14.
+
+// UNSUPPORTED: c++14, c++1z
+// UNSUPPORTED: sanitizer-new-delete
+
+#include <new>
+#include <cstddef>
+#include <cstdlib>
+#include <cassert>
+
+int unsized_delete_called = 0;
+int unsized_delete_nothrow_called = 0;
+int sized_delete_called = 0;
+
+void operator delete(void* p) throw()
+{
+    ++unsized_delete_called;
+    std::free(p);
+}
+
+void operator delete(void* p, const std::nothrow_t&) throw()
+{
+    ++unsized_delete_nothrow_called;
+    std::free(p);
+}
+
+void operator delete(void* p, std::size_t) throw()
+{
+    ++sized_delete_called;
+    std::free(p);
+}
+
+int main()
+{
+    int *x = new int(42);
+    assert(0 == unsized_delete_called);
+    assert(0 == unsized_delete_nothrow_called);
+    assert(0 == sized_delete_called);
+
+    delete x;
+    assert(1 == unsized_delete_called);
+    assert(0 == sized_delete_called);
+    assert(0 == unsized_delete_nothrow_called);
+}

test/std/language.support/support.dynamic/new.delete/new.delete.single/sized_delete14.pass.cpp

+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// test sized operator delete replacement.
+
+// UNSUPPORTED: sanitizer-new-delete, c++98, c++03, c++11
+
+// TODO: Clang does not enable sized-deallocation in c++14 and behond by
+// default. It is only enabled when -fsized-deallocation is given.
+// XFAIL: clang
+
+// TODO: GCC 4.9.1 does not support sized-deallocation in c++14. However
+// GCC 5.1 does.
+// XFAIL: gcc-4.8, gcc-4.9
+
+#include <new>
+#include <cstddef>
+#include <cstdlib>
+#include <cassert>
+
+int unsized_delete_called = 0;
+int unsized_delete_nothrow_called = 0;
+int sized_delete_called = 0;
+
+void operator delete(void* p) throw()
+{
+    ++unsized_delete_called;
+    std::free(p);
+}
+
+void operator delete(void* p, const std::nothrow_t&) throw()
+{
+    ++unsized_delete_nothrow_called;
+    std::free(p);
+}
+
+void operator delete(void* p, std::size_t) throw()
+{
+    ++sized_delete_called;
+    std::free(p);
+}
+
+int main()
+{
+    int *x = new int(42);
+    assert(0 == unsized_delete_called);
+    assert(0 == unsized_delete_nothrow_called);
+    assert(0 == sized_delete_called);
+
+    delete x;
+    assert(0 == unsized_delete_called);
+    assert(1 == sized_delete_called);
+    assert(0 == unsized_delete_nothrow_called);
+}

test/std/language.support/support.dynamic/new.delete/new.delete.single/sized_delete_calls_unsized_delete.pass.cpp

+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// test sized operator delete calls the unsized operator delete.
+// When sized operator delete is not available (ex C++11) then the unsized
+// operator delete is called directly.
+
+// UNSUPPORTED: sanitizer-new-delete
+
+#include <new>
+#include <cstddef>
+#include <cstdlib>
+#include <cassert>
+
+int delete_called = 0;
+int delete_nothrow_called = 0;
+
+void operator delete(void* p) throw()
+{
+    ++delete_called;
+    std::free(p);
+}
+
+void operator delete(void* p, const std::nothrow_t&) throw()
+{
+    ++delete_nothrow_called;
+    std::free(p);
+}
+
+int main()
+{
+    int *x = new int(42);
+    assert(0 == delete_called);
+    assert(0 == delete_nothrow_called);
+
+    delete x;
+    assert(1 == delete_called);
+    assert(0 == delete_nothrow_called);
+}

test/std/language.support/support.dynamic/new.delete/new.delete.single/sized_delete_fsizeddeallocation.sh.cpp

+//===----------------------------------------------------------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+// test sized operator delete replacement.
+
+// Note that sized delete operator definitions below are simply ignored
+// when sized deallocation is not supported, e.g., prior to C++14.
+
+// UNSUPPORTED: sanitizer-new-delete
+
+// TODO: -fsized-deallocation was only added to GCC in 5.1.
+// XFAIL: gcc-4.8, gcc-4.9
+
+// RUN: %build -fsized-deallocation
+// RUN: %run
+
+#if !defined(__cpp_sized_deallocation)
+# error __cpp_sized_deallocation should be defined
+#endif
+
+#if !(__cpp_sized_deallocation >= 201309L)
+# error expected __cpp_sized_deallocation >= 201309L
+#endif
+
+#include <new>
+#include <cstddef>
+#include <cstdlib>
+#include <cassert>
+
+int unsized_delete_called = 0;
+int unsized_delete_nothrow_called = 0;
+int sized_delete_called = 0;
+
+void operator delete(void* p) throw()
+{
+    ++unsized_delete_called;
+    std::free(p);
+}
+
+void operator delete(void* p, const std::nothrow_t&) throw()
+{
+    ++unsized_delete_nothrow_called;
+    std::free(p);
+}
+
+void operator delete(void* p, std::size_t) throw()
+{
+    ++sized_delete_called;
+    std::free(p);
+}
+
+int main()
+{
+    int *x = new int(42);
+    assert(0 == sized_delete_called);
+    assert(0 == unsized_delete_called);
+    assert(0 == unsized_delete_nothrow_called);
+
+    delete x;
+    assert(1 == sized_delete_called);
+    assert(0 == unsized_delete_called);
+    assert(0 == unsized_delete_nothrow_called);
+}

test/std/language.support/support.dynamic/new.delete/new.delete.single/sized_delete_nothrow.pass.cpp

-//===----------------------------------------------------------------------===//
-//
-//                     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.
-//
-//===----------------------------------------------------------------------===//
-
-// test nothrow sized operator delete by replacing
-// nothrow unsized operator delete.
-
-// UNSUPPORTED: sanitizer-new-delete
-
-#include <new>
-#include <cstddef>
-#include <cstdlib>
-#include <cassert>
-#include <limits>
-
-int delete_called = 0;
-int delete_nothrow_called = 0;
-
-void operator delete(void* p) throw()
-{
-    ++delete_called;
-    std::free(p);
-}
-
-void operator delete(void* p, const std::nothrow_t&) throw()
-{
-    ++delete_nothrow_called;
-    std::free(p);
-}
-
-int new_handler_called = 0;
-
-void new_handler()
-{
-    ++new_handler_called;
-    std::set_new_handler(0);
-}
-
-bool A_constructed = false;
-
-struct A
-{
-    A() {A_constructed = true;}
-    ~A() {A_constructed = false;}
-};
-
-struct BadA : public A {
-    BadA() { throw std::bad_alloc(); }
-};
-
-int main()
-{
-    std::set_new_handler(new_handler);
-    try
-    {
-        void* volatile vp = operator new (std::numeric_limits<std::size_t>::max(), std::nothrow);
-        assert(new_handler_called == 1);
-        assert(vp == 0);
-    }
-    catch (...)
-    {
-        assert(false);
-    }
-    try
-    {
-        A* ap = new(std::nothrow) BadA;
-        assert(false);
-    }
-    catch (...)
-    {
-        assert(!A_constructed);
-        assert(!delete_called);
-        assert(delete_nothrow_called == 1);
-    }
-}

test/std/language.support/support.dynamic/new.delete/new.delete.single/sized_delete_replace.pass.cpp

-//===----------------------------------------------------------------------===//
-//
-//                     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.
-//
-//===----------------------------------------------------------------------===//
-
-// test sized operator delete replacement.
-
-// Note that sized delete operator definitions below are simply ignored
-// when sized deallocation is not supported, e.g., prior to C++14.
-
-// UNSUPPORTED: sanitizer-new-delete
-
-#include <new>
-#include <cstddef>
-#include <cstdlib>
-#include <cassert>
-#include <limits>
-
-int unsized_delete_called = 0;
-int unsized_delete_nothrow_called = 0;
-int sized_delete_called = 0;
-int sized_delete_nothrow_called = 0;
-
-void operator delete(void* p) throw()
-{
-    ++unsized_delete_called;
-    std::free(p);
-}
-
-void operator delete(void* p, const std::nothrow_t&) throw()
-{
-    ++unsized_delete_nothrow_called;
-    std::free(p);
-}
-
-void operator delete(void* p, std::size_t) throw()
-{
-    ++sized_delete_called;
-    std::free(p);
-}
-
-void operator delete(void* p, std::size_t, const std::nothrow_t&) throw()
-{
-    ++sized_delete_nothrow_called;
-    std::free(p);
-}
-
-int new_handler_called = 0;
-
-void new_handler()
-{
-    ++new_handler_called;
-    std::set_new_handler(0);
-}
-
-bool A_constructed = false;
-
-struct A
-{
-    A() {A_constructed = true;}
-    ~A() {A_constructed = false;}
-};
-
-int main()
-{
-    std::set_new_handler(new_handler);
-    try
-    {
-        void* vp = operator new (std::numeric_limits<std::size_t>::max());
-        assert(false);
-    }
-    catch (std::bad_alloc&)
-    {
-        assert(new_handler_called == 1);
-    }
-    catch (...)
-    {
-        assert(false);
-    }
-    A* ap = new A;
-    assert(ap);
-    assert(A_constructed);
-    assert(!unsized_delete_called);
-    assert(!unsized_delete_nothrow_called);
-    assert(!sized_delete_called);
-    assert(!sized_delete_nothrow_called);
-    delete ap;
-    assert(!A_constructed);
-#if _LIBCPP_STD_VER >= 14
-    assert(!unsized_delete_called);
-    assert(sized_delete_called == 1);
-#else // if _LIBCPP_STD_VER < 14
-    assert(unsized_delete_called == 1);
-    assert(!sized_delete_called);
-#endif
-    assert(!unsized_delete_nothrow_called);
-    assert(!sized_delete_nothrow_called);
-}