File: compare_copy_constructible.fail.cpp

package info (click to toggle)
llvm-toolchain-7 1%3A7.0.1-8~deb9u3
  • links: PTS, VCS
  • area: main
  • in suites: stretch
  • size: 733,456 kB
  • sloc: cpp: 3,776,651; ansic: 633,271; asm: 350,301; python: 142,716; objc: 107,612; sh: 22,626; lisp: 11,056; perl: 7,999; pascal: 6,742; ml: 5,537; awk: 3,536; makefile: 2,557; cs: 2,027; xml: 841; ruby: 156
file content (29 lines) | stat: -rw-r--r-- 770 bytes parent folder | download | duplicates (3)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
//===----------------------------------------------------------------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

// <map>

// Check that std::multimap fails to instantiate if the comparison predicate is
// not copy-constructible. This is LWG issue 2436

#include <map>

template <class T>
struct Comp {
    bool operator () (const T& lhs, const T& rhs) const { return lhs < rhs; }

    Comp () {}
private:
    Comp (const Comp &); // declared but not defined
    };


int main() {
    std::multimap<int, int, Comp<int> > m;
}