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  1. #include <limits>
  2. #include <cstdlib>
  3.  
  4. void bitvec_func()
  5. {
  6.     const std::size_t       nbits = 1e7;
  7.     typedef unsigned char   vec_t;
  8.     const std::size_t       WLEN  = std::numeric_limits<vec_t>::digits;
  9.     const std::size_t       VSIZ  = nbits/WLEN+1;
  10.     static vec_t            bitVec[nbits/VSIZ];    // Compiles fine
  11. }
  12.  
  13. template <typename T>
  14. void bitvec_func()
  15. {
  16.     const std::size_t       nbits = 1e7;
  17.     typedef T               vec_t;
  18.     const std::size_t       WLEN  = std::numeric_limits<vec_t>::digits;
  19.     const std::size_t       VSIZ  = nbits/WLEN+1;
  20.     static vec_t            bitVec[nbits/VSIZ];    // "error: storage size of ‘bitVec’ isn’t constant"
  21. }
  22.  
  23. void flarf()
  24. {
  25. 	bitvec_func();
  26.         bitvec_func<unsigned char>();
  27. }
  28.  
  29. int main()
  30. {
  31.        flarf();
  32. }
Success #stdin #stdout 0.01s 2720KB
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https://ideone.com/65Cl7
language:
C++ (gcc 8.3)
created:
11 years ago
visibility:
public

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