libcxx/test/std/containers/sequences/vector.bool/shrink_to_fit.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 // <vector>
  10 // vector<bool>
  11
  12 // void shrink_to_fit();
  13
  14 #include <vector>
  15 #include <cassert>
  16
  17 #include "test_macros.h"
  18 #include "min_allocator.h"
  19
  20 TEST_CONSTEXPR_CXX20 bool tests()
  21 {
  22     {
  23         std::vector<bool> v(100);
  24         v.push_back(1);
  25         v.shrink_to_fit();
  26         assert(v.capacity() >= 101);
  27         assert(v.size() >= 101);
  28     }
  29 #if TEST_STD_VER >= 11
  30     {
  31         std::vector<bool, min_allocator<bool>> v(100);
  32         v.push_back(1);
  33         v.shrink_to_fit();
  34         assert(v.capacity() >= 101);
  35         assert(v.size() >= 101);
  36     }
  37 #endif
  38
  39     return true;
  40 }
  41
  42 int main(int, char**)
  43 {
  44     tests();
  45 #if TEST_STD_VER > 17
  46     static_assert(tests());
  47 #endif
  48     return 0;
  49 }