src/third_party/libc++/trunk/test/containers/sequences/vector/vector.capacity/shrink_to_fit.pass.cpp

   1 //===----------------------------------------------------------------------===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is dual licensed under the MIT and the University of Illinois Open
   6 // Source Licenses. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9
  10 // <vector>
  11
  12 // void shrink_to_fit();
  13
  14 #include <vector>
  15 #include <cassert>
  16 #include "../../../stack_allocator.h"
  17 #include "min_allocator.h"
  18 #include "asan_testing.h"
  19
  20 int main()
  21 {
  22     {
  23         std::vector<int> v(100);
  24         v.push_back(1);
  25         assert(is_contiguous_container_asan_correct(v));
  26         v.shrink_to_fit();
  27         assert(v.capacity() == 101);
  28         assert(v.size() == 101);
  29         assert(is_contiguous_container_asan_correct(v));
  30     }
  31     {
  32         std::vector<int, stack_allocator<int, 401> > v(100);
  33         v.push_back(1);
  34         assert(is_contiguous_container_asan_correct(v));
  35         v.shrink_to_fit();
  36         assert(v.capacity() == 101);
  37         assert(v.size() == 101);
  38         assert(is_contiguous_container_asan_correct(v));
  39     }
  40 #ifndef _LIBCPP_NO_EXCEPTIONS
  41     {
  42         std::vector<int, stack_allocator<int, 400> > v(100);
  43         v.push_back(1);
  44         assert(is_contiguous_container_asan_correct(v));
  45         v.shrink_to_fit();
  46         assert(v.capacity() == 200);
  47         assert(v.size() == 101);
  48         assert(is_contiguous_container_asan_correct(v));
  49     }
  50 #endif
  51 #if __cplusplus >= 201103L
  52     {
  53         std::vector<int, min_allocator<int>> v(100);
  54         v.push_back(1);
  55         assert(is_contiguous_container_asan_correct(v));
  56         v.shrink_to_fit();
  57         assert(v.capacity() == 101);
  58         assert(v.size() == 101);
  59         assert(is_contiguous_container_asan_correct(v));
  60     }
  61 #endif
  62 }