File: lwg3204.cc

package info (click to toggle)
gcc-arm-none-eabi 15%3A14.2.rel1-1
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 1,099,328 kB
  • sloc: cpp: 3,627,108; ansic: 2,571,498; ada: 834,230; f90: 235,082; makefile: 79,231; asm: 74,984; xml: 51,692; exp: 39,736; sh: 33,298; objc: 15,629; python: 15,069; fortran: 14,429; pascal: 7,003; awk: 5,070; perl: 3,106; ml: 285; lisp: 253; lex: 204; haskell: 135
file content (38 lines) | stat: -rw-r--r-- 885 bytes parent folder | download 
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
 
// { dg-do run { target c++11 } }
#include <regex>
#include <testsuite_hooks.h>

// LWG 3204. sub_match::swap only swaps the base class

int main()
{
  std::sub_match<const char*> a, b;
  a.matched = true;
  a.swap(b);
  VERIFY( ! a.matched );
  VERIFY( b.matched );
}

struct iter
{
  using value_type = char;
  using difference_type = long;
  using pointer = const char*;
  using reference = const char&;
  using iterator_category = std::bidirectional_iterator_tag;

  iter();
  iter(const iter&) noexcept(false);

  iter& operator++();
  iter operator++(int);
  iter& operator--();
  iter operator--(int);
  reference operator*() const;
  pointer operator->() const;
};

using CS = std::csub_match;
static_assert( noexcept(std::declval<CS&>().swap(std::declval<CS&>())) );
using IS = std::sub_match<iter>;
static_assert( ! noexcept(std::declval<IS&>().swap(std::declval<IS&>())) );