libcxx/test/std/containers/sequences/vector/vector.modifiers/emplace_extra.pass.cpp

   1 //===----------------------------------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 // UNSUPPORTED: c++03
  10
  11 // <vector>
  12
  13 // template <class... Args> iterator emplace(const_iterator pos, Args&&... args);
  14
  15 #include <vector>
  16 #include <cassert>
  17
  18 #include "test_macros.h"
  19 #include "min_allocator.h"
  20 #include "asan_testing.h"
  21
  22 int main(int, char**)
  23 {
  24     {
  25         std::vector<int> v;
  26         v.reserve(3);
  27         assert(is_contiguous_container_asan_correct(v));
  28         v = { 1, 2, 3 };
  29         v.emplace(v.begin(), v.back());
  30         assert(v[0] == 3);
  31         assert(is_contiguous_container_asan_correct(v));
  32     }
  33     {
  34         std::vector<int> v;
  35         v.reserve(4);
  36         assert(is_contiguous_container_asan_correct(v));
  37         v = { 1, 2, 3 };
  38         v.emplace(v.begin(), v.back());
  39         assert(v[0] == 3);
  40         assert(is_contiguous_container_asan_correct(v));
  41     }
  42     {
  43         std::vector<int, min_allocator<int>> v;
  44         v.reserve(3);
  45         assert(is_contiguous_container_asan_correct(v));
  46         v = { 1, 2, 3 };
  47         v.emplace(v.begin(), v.back());
  48         assert(v[0] == 3);
  49         assert(is_contiguous_container_asan_correct(v));
  50     }
  51     {
  52         std::vector<int, min_allocator<int>> v;
  53         v.reserve(4);
  54         assert(is_contiguous_container_asan_correct(v));
  55         v = { 1, 2, 3 };
  56         v.emplace(v.begin(), v.back());
  57         assert(v[0] == 3);
  58         assert(is_contiguous_container_asan_correct(v));
  59     }
  60
  61   return 0;
  62 }