text: //===----------------------------------------------------------------------===//
  //
  //                     The LLVM Compiler Infrastructure
  //
  // This file is dual licensed under the MIT and the University of Illinois Open
  // Source Licenses. See LICENSE.TXT for details.
  //
  //===----------------------------------------------------------------------===//
  
  // <valarray>
  
  // template <class T> class gslice_array
  
  // const gslice_array& operator=(const gslice_array& ga) const;
  
  #include <valarray>
  #include <cassert>
  
  int main()
  {
      int a1[] = { 0,  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, 39, 40};
      int a2[] = { -0,  -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};
      std::valarray<int> v1(a1, sizeof(a1)/sizeof(a1[0]));
      const std::valarray<int> v2(a2, sizeof(a2)/sizeof(a2[0]));
      std::size_t sz[] = {2, 4, 3};
      std::size_t st[] = {19, 4, 1};
      typedef std::valarray<std::size_t> sizes;
      typedef std::valarray<std::size_t> strides;
      v1[std::gslice(3, sizes(sz, sizeof(sz)/sizeof(sz[0])),
                        strides(st, sizeof(st)/sizeof(st[0])))]
          = v2[std::gslice(3, sizes(sz, sizeof(sz)/sizeof(sz[0])),
                              strides(st, sizeof(st)/sizeof(st[0])))];
      assert(v1.size() == 41);
      assert(v1[ 0] ==  0);
      assert(v1[ 1] ==  1);
      assert(v1[ 2] ==  2);
      assert(v1[ 3] == -3);
      assert(v1[ 4] == -4);
      assert(v1[ 5] == -5);
      assert(v1[ 6] ==  6);
      assert(v1[ 7] == -7);
      assert(v1[ 8] == -8);
      assert(v1[ 9] == -9);
      assert(v1[10] == 10);
      assert(v1[11] == -11);
      assert(v1[12] == -12);
      assert(v1[13] == -13);
      assert(v1[14] == 14);
      assert(v1[15] == -15);
      assert(v1[16] == -16);
      assert(v1[17] == -17);
      assert(v1[18] == 18);
      assert(v1[19] == 19);
      assert(v1[20] == 20);
      assert(v1[21] == 21);
      assert(v1[22] == -22);
      assert(v1[23] == -23);
      assert(v1[24] == -24);
      assert(v1[25] == 25);
      assert(v1[26] == -26);
      assert(v1[27] == -27);
      assert(v1[28] == -28);
      assert(v1[29] == 29);
      assert(v1[30] == -30);
      assert(v1[31] == -31);
      assert(v1[32] == -32);
      assert(v1[33] == 33);
      assert(v1[34] == -34);
      assert(v1[35] == -35);
      assert(v1[36] == -36);
      assert(v1[37] == 37);
      assert(v1[38] == 38);
      assert(v1[39] == 39);
      assert(v1[40] == 40);
  }
  