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      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 // <deque>
     11 
     12 // void push_back(const value_type& v);
     13 // void pop_back();
     14 // void pop_front();
     15 
     16 #include <deque>
     17 #include <cassert>
     18 
     19 #include "min_allocator.h"
     20 
     21 template <class C>
     22 C
     23 make(int size, int start = 0 )
     24 {
     25     const int b = 4096 / sizeof(int);
     26     int init = 0;
     27     if (start > 0)
     28     {
     29         init = (start+1) / b + ((start+1) % b != 0);
     30         init *= b;
     31         --init;
     32     }
     33     C c(init, 0);
     34     for (int i = 0; i < init-start; ++i)
     35         c.pop_back();
     36     for (int i = 0; i < size; ++i)
     37         c.push_back(i);
     38     for (int i = 0; i < start; ++i)
     39         c.pop_front();
     40     return c;
     41 };
     42 
     43 template <class C>
     44 void test(int size)
     45 {
     46     int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2046, 2047, 2048, 2049};
     47     const int N = sizeof(rng)/sizeof(rng[0]);
     48     for (int j = 0; j < N; ++j)
     49     {
     50         C c = make<C>(size, rng[j]);
     51         typename C::const_iterator it = c.begin();
     52         for (int i = 0; i < size; ++i, ++it)
     53             assert(*it == i);
     54     }
     55 }
     56 
     57 int main()
     58 {
     59     {
     60     int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2046, 2047, 2048, 2049, 4094, 4095, 4096};
     61     const int N = sizeof(rng)/sizeof(rng[0]);
     62     for (int j = 0; j < N; ++j)
     63         test<std::deque<int> >(rng[j]);
     64     }
     65 #if __cplusplus >= 201103L
     66     {
     67     int rng[] = {0, 1, 2, 3, 1023, 1024, 1025, 2046, 2047, 2048, 2049, 4094, 4095, 4096};
     68     const int N = sizeof(rng)/sizeof(rng[0]);
     69     for (int j = 0; j < N; ++j)
     70         test<std::deque<int, min_allocator<int>> >(rng[j]);
     71     }
     72 #endif
     73 }
     74