File: empty.pass.cpp

package info (click to toggle)
llvm-toolchain-15 1%3A15.0.6-4
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,554,644 kB
  • sloc: cpp: 5,922,452; ansic: 1,012,136; asm: 674,362; python: 191,568; objc: 73,855; f90: 42,327; lisp: 31,913; pascal: 11,973; javascript: 10,144; sh: 9,421; perl: 7,447; ml: 5,527; awk: 3,523; makefile: 2,520; xml: 885; cs: 573; fortran: 567
file content (41 lines) | stat: -rw-r--r-- 951 bytes parent folder | download | duplicates (20) 
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
30
31
32
33
34
35
36
37
38
39
40
41
 
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

// <iterator>

// template<class NotAnIterator>
// struct iterator_traits
// {
// };

#include <iterator>

#include "test_macros.h"

struct not_an_iterator
{
};

template <class T>
struct has_value_type
{
private:
    struct two {char lx; char lxx;};
    template <class U> static two test(...);
    template <class U> static char test(typename U::value_type* = 0);
public:
    static const bool value = sizeof(test<T>(0)) == 1;
};

int main(int, char**)
{
    typedef std::iterator_traits<not_an_iterator> It;
    static_assert(!(has_value_type<It>::value), "");

    return 0;
}