libreoffice/compilerplugins/clang/test/redundantfcast.cxx
Noel Grandin 81fd3bb4d7 loplugin:redundantfcast check for std::function cast
noticed by mike kaganski

Change-Id: I210f6d2655edde74d9256c6147b7d15a88180196
Reviewed-on: https://gerrit.libreoffice.org/78743
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
2019-09-11 15:33:28 +02:00

100 lines
3.1 KiB
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 "sal/config.h"
#include "rtl/ustring.hxx"
#include "tools/color.hxx"
#include <functional>
#include <memory>
void method1(OUString const&); // expected-note {{in call to method here [loplugin:redundantfcast]}}
struct Foo
{
Foo(int) {}
};
void func1(Foo const& f); // expected-note {{in call to method here [loplugin:redundantfcast]}}
namespace tools
{
struct Polygon
{
Polygon() = default;
};
struct PolyPolygon
{
PolyPolygon(
Polygon const&); // expected-note {{in call to method here [loplugin:redundantfcast]}}
};
}
void ImplWritePolyPolygonRecord(const tools::PolyPolygon& rPolyPoly);
int main()
{
OUString s;
(void)OUString(
s); // expected-error@-1 {{redundant functional cast from 'rtl::OUString' to 'rtl::OUString' [loplugin:redundantfcast]}}
using T1 = OUString;
(void)T1(
s); // expected-error@-1 {{redundant functional cast from 'rtl::OUString' to 'T1' (aka 'rtl::OUString') [loplugin:redundantfcast]}}
using T2 = OUString const;
(void)T2(
s); // expected-error@-1 {{redundant functional cast from 'rtl::OUString' to 'T2' (aka 'const rtl::OUString') [loplugin:redundantfcast]}}
(void)std::unique_ptr<int>(std::unique_ptr<int>(
new int{})); // expected-error@-1 {{redundant functional cast from 'std::unique_ptr<int>' to 'std::unique_ptr<int>' [loplugin:redundantfcast]}}
OUString s1;
method1(OUString(
s1)); // expected-error@-1 {{redundant functional cast from 'rtl::OUString' to 'rtl::OUString' [loplugin:redundantfcast]}}
OUString s2;
s2 = OUString(
s1); // expected-error@-1 {{redundant functional cast from 'rtl::OUString' to 'rtl::OUString' [loplugin:redundantfcast]}}
Color col1;
Color col2 = Color(
col1); // expected-error@-1 {{redundant functional cast from 'Color' to 'Color' [loplugin:redundantfcast]}}
(void)col2;
Foo foo(1);
func1(Foo(
foo)); // expected-error@-1 {{redundant functional cast from 'Foo' to 'Foo' [loplugin:redundantfcast]}}
const tools::Polygon aPolygon;
ImplWritePolyPolygonRecord(tools::PolyPolygon(tools::Polygon(
aPolygon))); // expected-error@-1 {{redundant functional cast from 'const tools::Polygon' to 'tools::Polygon' [loplugin:redundantfcast]}}
}
class Class1
{
Foo foo;
Foo func2()
{
return Foo(
foo); // expected-error@-1 {{redundant functional cast from 'Foo' to 'Foo' [loplugin:redundantfcast]}}
}
};
// casting of lambdas
namespace test5
{
void f1(std::function<void()> x);
void f2()
{
// expected-error-re@+1 {{redundant functional cast {{.+}} [loplugin:redundantfcast]}}
f1(std::function([&]() {}));
}
};
/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */