125 lines
4.9 KiB
C++
125 lines
4.9 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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#undef NDEBUG
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#include <cassert>
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#define CAST_N3 (void) n3
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#define ASSERT_N4 assert(n4 == 0)
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#define ASSERT(x) assert(x)
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#define USE(x) x
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int f1(int n1, int n2, int n3, int n4, int n5) {
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(void) n1; // expected-error {{unnecessary cast to void [loplugin:casttovoid]}}
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int const & r1 = n1; // expected-note {{first consumption is here [loplugin:casttovoid]}}
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(void) n2; // expected-error {{unnecessary cast to void [loplugin:casttovoid]}}
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int const & r2 = {n2}; // expected-note {{first consumption is here [loplugin:casttovoid]}}
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(void) n3; // expected-error {{unnecessary cast to void [loplugin:casttovoid]}}
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int const & r3{n3}; // expected-note {{first consumption is here [loplugin:casttovoid]}}
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(void) n4; // expected-error {{unnecessary cast to void [loplugin:casttovoid]}}
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int const & r4(n4); // expected-note {{first consumption is here [loplugin:casttovoid]}}
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(void) n5; // expected-error {{unnecessary cast to void [loplugin:casttovoid]}}
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int const & r5 = (n5); // expected-note {{first consumption is here [loplugin:casttovoid]}}
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return r1 + r2 + r3 + r4 + r5;
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}
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int const & f2(int const & n) {
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(void) n; // expected-error {{unnecessary cast to void [loplugin:casttovoid]}}
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return n; // expected-note {{first consumption is here [loplugin:casttovoid]}}
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}
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int const & f3(int const & n) {
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(void) n; // expected-error {{unnecessary cast to void [loplugin:casttovoid]}}
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return (n); // expected-note {{first consumption is here [loplugin:casttovoid]}}
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}
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int const & f4(int const & n) {
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(void) n; // expected-error {{unnecessary cast to void [loplugin:casttovoid]}}
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return {n}; // expected-note {{first consumption is here [loplugin:casttovoid]}}
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}
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int const & f5(int const & n) {
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(void) n; // expected-error {{unnecessary cast to void [loplugin:casttovoid]}}
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return {(n)}; // expected-note {{first consumption is here [loplugin:casttovoid]}}
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}
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struct S1 {
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S1(int n1, int n2):
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n1_(n1), // expected-note {{first consumption is here [loplugin:casttovoid]}}
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n2_{n2} // expected-note {{first consumption is here [loplugin:casttovoid]}}
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{
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(void) n1; // expected-error {{unnecessary cast to void [loplugin:casttovoid]}}
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(void) n2; // expected-error {{unnecessary cast to void [loplugin:casttovoid]}}
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}
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int const n1_;
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int const n2_;
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};
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struct S2 { int n; };
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int fS2_1(S2 s) {
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(void) s; // expected-error {{unnecessary cast to void [loplugin:casttovoid]}}
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return s.n; // expected-note {{first consumption is here [loplugin:casttovoid]}}
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}
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int const & fS2_2(S2 const & s) {
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(void) s; // expected-error {{unnecessary cast to void [loplugin:casttovoid]}}
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return s.n; // expected-note {{first consumption is here [loplugin:casttovoid]}}
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}
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// Don't trigger assert in CastToVoid::VisitReturnStmt:
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int n = [] { return 0; }();
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int f() {
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int n1 = n;
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int n2 = [](int const & n) -> int const & {
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(void) n; // expected-error {{unnecessary cast to void [loplugin:casttovoid]}}
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return n; // expected-note {{first consumption is here [loplugin:casttovoid]}}
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}(n1);
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return n2;
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}
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int main() {
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int n1 = 0;
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(void) n1; // expected-error {{unnecessary cast to void [loplugin:casttovoid]}}
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(void const) n1; // expected-error {{unnecessary cast to void [loplugin:casttovoid]}}
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(void volatile) n1; // expected-error {{unnecessary cast to void [loplugin:casttovoid]}}
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(void const volatile) n1; // expected-error {{unnecessary cast to void [loplugin:casttovoid]}}
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(void) (n1); // expected-error {{unnecessary cast to void [loplugin:casttovoid]}}
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(void) ((n1)); // expected-error {{unnecessary cast to void [loplugin:casttovoid]}}
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(void(n1)); // expected-error {{unnecessary cast to void [loplugin:casttovoid]}}
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static_cast<void>(n1); // expected-error {{unnecessary cast to void [loplugin:casttovoid]}}
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int n2 = 0;
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assert(n2 == 0);
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(void) n2; // expected-error {{unnecessary cast to void [loplugin:casttovoid]}}
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int n3 = 0;
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CAST_N3;
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int n4 = 0;
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ASSERT_N4;
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(void) n4;
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int n5 = 0;
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assert(n5 == 0);
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(void) n5;
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int n6 = 0;
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ASSERT(n6 == 0);
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(void) n6;
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int n7 = 0;
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assert(USE(n7) == 0);
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(void) n7;
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int n8 = 0;
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ASSERT(USE(USE(n8 == 0)));
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(void) n8;
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int volatile n9 = 0;
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(void) n9;
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return n1 // expected-note 8 {{first consumption is here [loplugin:casttovoid]}}
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+ n2 // expected-note {{first consumption is here [loplugin:casttovoid]}}
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+ n3;
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */
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