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PR libstdc++/87538 fix std::not_fn exception specifications

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PR libstdc++/87538
	* include/std/functional (_Not_fn::operator()): Check value of
	__is_nothrow_invocable as well.
	* testsuite/20_util/function_objects/not_fn/87538.cc: New test.

From-SVN: r264921
This commit is contained in:
Jonathan Wakely 2018-10-08 13:07:22 +01:00 committed by Jonathan Wakely
parent 0054ef84b0
commit 606f6be67b
3 changed files with 58 additions and 1 deletions
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7
libstdc++-v3/ChangeLog
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@ -1,3 +1,10 @@
2018-10-08 Jonathan Wakely <jwakely@redhat.com>
PR libstdc++/87538
* include/std/functional (_Not_fn::operator()): Check value of
__is_nothrow_invocable as well.
* testsuite/20_util/function_objects/not_fn/87538.cc: New test.
2018-10-08 François Dumont <fdumont@gcc.gnu.org>
* include/debug/list (list<>::cbegin()): Use C++11 direct

3
libstdc++-v3/include/std/functional
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@ -864,7 +864,8 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
template<typename... _Args> \
decltype(_S_not<__inv_res_t<_Fn _QUALS, _Args...>>()) \
operator()(_Args&&... __args) _QUALS \
noexcept(noexcept(_S_not<__inv_res_t<_Fn _QUALS, _Args...>>())) \
noexcept(__is_nothrow_invocable<_Fn _QUALS, _Args...>::value \
&& noexcept(_S_not<__inv_res_t<_Fn _QUALS, _Args...>>())) \
{ \
return !std::__invoke(std::forward< _Fn _QUALS >(_M_fn), \
std::forward<_Args>(__args)...); \

49
libstdc++-v3/testsuite/20_util/function_objects/not_fn/87538.cc Normal file
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@ -0,0 +1,49 @@
// Copyright (C) 2018 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
// { dg-options "-std=gnu++17" }
// { dg-do run { target c++17 } }
#include <functional>
#include <testsuite_hooks.h>
struct N {
int operator()(int i) { if (i == 0) throw -1; return i; }
};
void
test01()
{
N n;
auto not_n = std::not_fn(n);
static_assert( !noexcept(not_n(1)) );
VERIFY(not_n(1) == 0);
int exception = 0;
try {
not_n(0);
}
catch (int e) {
exception = e;
}
VERIFY(exception == -1);
}
int
main()
{
test01();
}