Files
libreoffice/compilerplugins/clang/test/expressionalwayszero.cxx
Noel Grandin 256c28ae33 new loplugin:expressionalwayszero
The code in SvXMLExportItemMapper::exportXML was broken as far back as
its introduction in

    commit 0c28e3c480
    "Move SvXMLAttrContainerItem to SVX, moved writer only code to sw"

Change-Id: I90043ce8b7263aa56fd0883d350e29b97eeaf99b
Reviewed-on: https://gerrit.libreoffice.org/41282
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
2017-08-18 14:19:20 +02:00

32 lines
992 B
C++

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
#include <o3tl/typed_flags_set.hxx>
constexpr auto ONE = 1;
constexpr auto TWO = 2;
enum class Enum1 {
ONE = 1,
TWO = 2,
};
namespace o3tl {
template<> struct typed_flags<Enum1> : is_typed_flags<Enum1, 0x3> {};
}
int main()
{
auto v1 = ONE & TWO; // expected-error {{expression always evaluates to zero, lhs=1 rhs=2 [loplugin:expressionalwayszero]}}
(void)v1;
auto v2 = Enum1::ONE & Enum1::TWO; // expected-error {{expression always evaluates to zero, lhs=1 rhs=2 [loplugin:expressionalwayszero]}}
(void)v2;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */