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comparison gcc/testsuite/g++.dg/expr/cast11.C @ 111:04ced10e8804

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gcc 7
author kono
date Fri, 27 Oct 2017 22:46:09 +0900
parents
children 1830386684a0
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68:561a7518be6b 111:04ced10e8804
1 // { dg-do compile { target c++11 } }
2 // { dg-options "-Wignored-qualifiers" }
3 // c++/80544 cast expressions returned cv-qualified prvalues
4
5 template<typename T> void f(T&&) { }
6 template<typename T> void f(T const&&) = delete;
7
8 template<typename T> void g(T&&) = delete;
9 template<typename T> void g(T const&&) { }
10
11 struct B { int i; const char c; } b = {};
12
13 void f1()
14 {
15 int i = 0;
16 f((long const)i); // { dg-warning "qualifiers ignored" }
17 f((int* const)&i); // { dg-warning "qualifiers ignored" }
18 f((int const* const)&i); // { dg-warning "qualifiers ignored" }
19 f((long* const)&i); // { dg-warning "qualifiers ignored" }
20
21 f(static_cast<long const>(i)); // { dg-warning "qualifiers ignored" }
22 f(reinterpret_cast<long const>(&i)); // { dg-warning "qualifiers ignored" }
23
24 f(static_cast<int* const>(&i)); // { dg-warning "qualifiers ignored" }
25 f(const_cast<int* const>(&i)); // { dg-warning "qualifiers ignored" }
26 f(reinterpret_cast<long* const>(&i)); // { dg-warning "qualifiers ignored" }
27
28 using ptrmem = int B::*;
29 f(static_cast<ptrmem const>(&B::i)); // { dg-warning "qualifiers ignored" }
30 f(const_cast<ptrmem const>(&B::i)); // { dg-warning "qualifiers ignored" }
31 f(reinterpret_cast<ptrmem const>(&B::i)); // { dg-warning "qualifiers ignored" }
32
33 // No warnings, not a cv-qualified type:
34 using ptrmem2 = const char B::*;
35 f(static_cast<ptrmem2>(&B::c));
36 f(const_cast<ptrmem2>(&B::c));
37 f(reinterpret_cast<ptrmem2>(&B::c));
38
39 // prvalue of class type can have cv-quals:
40 g(static_cast<const B>(b));
41 }