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PR libstdc++/87538 Verify fix for std::experimental::not_fn 

PR libstdc++/87538
	* testsuite/experimental/functional/87538.cc: New test.

From-SVN: r264922
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Jonathan Wakely 2018-10-08 13:17:58 +01:00 committed by Jonathan Wakely
parent 606f6be67b
commit aca0dcde1f
2 changed files with 51 additions and 0 deletions
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libstdc++-v3/ChangeLog
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2018-10-08 Jonathan Wakely <jwakely@redhat.com>
PR libstdc++/87538
* testsuite/experimental/functional/87538.cc: New test.
PR libstdc++/87538
* include/std/functional (_Not_fn::operator()): Check value of
__is_nothrow_invocable as well.

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libstdc++-v3/testsuite/experimental/functional/87538.cc Normal file
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// 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-do run { target c++14 } }
#include <experimental/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::experimental::not_fn(n);
static_assert( !noexcept(not_n(1)), "can throw" );
VERIFY(not_n(1) == 0);
int exception = 0;
try {
not_n(0);
}
catch (int e) {
exception = e;
}
VERIFY(exception == -1);
}
int
main()
{
test01();
}