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111 | /* -*- 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/.
*/
#undef NDEBUG
#include <cassert>
#define CAST_N3 (void) n3
#define ASSERT_N4 assert(n4 == 0)
#define ASSERT(x) assert(x)
#define USE(x) x
int f1(int n1, int n2, int n3, int n4, int n5) {
(void) n1; // expected-error {{unnecessary cast to void [loplugin:casttovoid]}}
int const & r1 = n1; // expected-note {{first consumption is here [loplugin:casttovoid]}}
(void) n2; // expected-error {{unnecessary cast to void [loplugin:casttovoid]}}
int const & r2 = {n2}; // expected-note {{first consumption is here [loplugin:casttovoid]}}
(void) n3; // expected-error {{unnecessary cast to void [loplugin:casttovoid]}}
int const & r3{n3}; // expected-note {{first consumption is here [loplugin:casttovoid]}}
(void) n4; // expected-error {{unnecessary cast to void [loplugin:casttovoid]}}
int const & r4(n4); // expected-note {{first consumption is here [loplugin:casttovoid]}}
(void) n5; // expected-error {{unnecessary cast to void [loplugin:casttovoid]}}
int const & r5 = (n5); // expected-note {{first consumption is here [loplugin:casttovoid]}}
return r1 + r2 + r3 + r4 + r5;
}
int const & f2(int const & n) {
(void) n; // expected-error {{unnecessary cast to void [loplugin:casttovoid]}}
return n; // expected-note {{first consumption is here [loplugin:casttovoid]}}
}
int const & f3(int const & n) {
(void) n; // expected-error {{unnecessary cast to void [loplugin:casttovoid]}}
return (n); // expected-note {{first consumption is here [loplugin:casttovoid]}}
}
int const & f4(int const & n) {
(void) n; // expected-error {{unnecessary cast to void [loplugin:casttovoid]}}
return {n}; // expected-note {{first consumption is here [loplugin:casttovoid]}}<--- Reference to temporary returned.
}
int const & f5(int const & n) {
(void) n; // expected-error {{unnecessary cast to void [loplugin:casttovoid]}}
return {(n)}; // expected-note {{first consumption is here [loplugin:casttovoid]}}<--- Reference to temporary returned.
}
struct S1 {
S1(int n1, int n2):
n1_(n1), // expected-note {{first consumption is here [loplugin:casttovoid]}}
n2_{n2} // expected-note {{first consumption is here [loplugin:casttovoid]}}
{
(void) n1; // expected-error {{unnecessary cast to void [loplugin:casttovoid]}}
(void) n2; // expected-error {{unnecessary cast to void [loplugin:casttovoid]}}
}
int const n1_;
int const n2_;
};
struct S2 { int n; };
int fS2_1(S2 s) {<--- The function 'fS2_1' is never used.
(void) s; // expected-error {{unnecessary cast to void [loplugin:casttovoid]}}
return s.n; // expected-note {{first consumption is here [loplugin:casttovoid]}}
}
int const & fS2_2(S2 const & s) {<--- The function 'fS2_2' is never used.
(void) s; // expected-error {{unnecessary cast to void [loplugin:casttovoid]}}
return s.n; // expected-note {{first consumption is here [loplugin:casttovoid]}}
}
int main() {
int n1 = 0;
(void) n1; // expected-error {{unnecessary cast to void [loplugin:casttovoid]}}
(void const) n1; // expected-error {{unnecessary cast to void [loplugin:casttovoid]}}
(void volatile) n1; // expected-error {{unnecessary cast to void [loplugin:casttovoid]}}
(void const volatile) n1; // expected-error {{unnecessary cast to void [loplugin:casttovoid]}}
(void) (n1); // expected-error {{unnecessary cast to void [loplugin:casttovoid]}}
(void) ((n1)); // expected-error {{unnecessary cast to void [loplugin:casttovoid]}}
(void(n1)); // expected-error {{unnecessary cast to void [loplugin:casttovoid]}}
static_cast<void>(n1); // expected-error {{unnecessary cast to void [loplugin:casttovoid]}}
int n2 = 0;<--- 'n2' is assigned value '0' here.
assert(n2 == 0);<--- The comparison 'n2 == 0' is always true. [+]Finding the same expression on both sides of an operator is suspicious and might indicate a cut and paste or logic error. Please examine this code carefully to determine if it is correct.
(void) n2; // expected-error {{unnecessary cast to void [loplugin:casttovoid]}}
int n3 = 0;
CAST_N3;
int n4 = 0;
ASSERT_N4;
(void) n4;
int n5 = 0;<--- 'n5' is assigned value '0' here.
assert(n5 == 0);<--- The comparison 'n5 == 0' is always true. [+]Finding the same expression on both sides of an operator is suspicious and might indicate a cut and paste or logic error. Please examine this code carefully to determine if it is correct.
(void) n5;
int n6 = 0;<--- 'n6' is assigned value '0' here.
ASSERT(n6 == 0);<--- The comparison 'n6 == 0' is always true. [+]Finding the same expression on both sides of an operator is suspicious and might indicate a cut and paste or logic error. Please examine this code carefully to determine if it is correct.
(void) n6;
int n7 = 0;<--- 'n7' is assigned value '0' here.
assert(USE(n7) == 0);<--- The comparison 'n7 == 0' is always true. [+]Finding the same expression on both sides of an operator is suspicious and might indicate a cut and paste or logic error. Please examine this code carefully to determine if it is correct.
(void) n7;
int n8 = 0;
ASSERT(USE(USE(n8 == 0)));
(void) n8;
return n1 // expected-note 8 {{first consumption is here [loplugin:casttovoid]}}
+ n2 // expected-note {{first consumption is here [loplugin:casttovoid]}}
+ n3;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */
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