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  1. #include <vector>
  2. #include <cassert>
  3. using namespace std;
  4. struct Vec2
  5. {
  6.     float a;
  7.     float b;
  8. };
  9.  
  10. int main()
  11. {
  12.     int assert_s[ sizeof(Vec2) == 2*sizeof(float) ? 1 : -1 ];
  13.     typedef vector<Vec2> Vector;
  14.     Vector v(32);
  15.     float *first=static_cast<float*>(static_cast<void*>(&v[0]));
  16.     for(Vector::size_type i,size=v.size();i!=size;++i)
  17.     {
  18.         assert((first+i*2) == (&(v[i].a)));
  19.         assert((first+i*2+1) == (&(v[i].b)));
  20.     }
  21.     assert(false != false);
  22. }
Runtime error #stdin #stdout 0.01s 2852KB
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Standard input is empty
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Standard output is empty
https://ideone.com/3AHK0v
language:
C++ (gcc 8.3)
created:
12 years ago
visibility:
secret

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