Is the data in nested std::arrays guaranteed to be contiguous?

by

No, contiguity is not guaranteed in this case.

std::array is guaranteed to be an aggregate, and is specified in such a way that the underlying array used for storage must be the first data member of the type.

However, there is no requirement that sizeof(array<T, N>) == sizeof(T) * N, nor is there any requirement that there are no unnamed padding bytes at the end of the object or that std::array has no data members other than the underlying array storage. (Though, an implementation that included additional data members would be, at best, unusual.)

More Related Contents:

  1. How do I take values from text file and input into a 2D array? c++
  2. How can I resize a 2D vector of objects given the width and height?
  3. Optimization code for a debug function (c++11 with templates) [closed]
  4. C++ press enter to continue
  5. Undefined reference to static constexpr char[]
  6. Visual Studio support for new C / C++ standards?
  7. How do I check for C++11 support?
  8. Thread pooling in C++11
  9. Is there any use for unique_ptr with array?
  10. Is the safe-bool idiom obsolete in C++11?
  11. Why can’t simple initialize (with braces) 2D std::array? [duplicate]
  12. Resolution of std::chrono::high_resolution_clock doesn’t correspond to measurements
  13. Sending and receiving 2D array over MPI
  14. Is this infinite recursion UB?
  15. Why does ‘std::vector b{2};’ create a 1-element vector, and not a 2-element one?
  16. Parallel Loops in C++
  17. How to enable C++11 in CLion?
  18. copy vs std::move for ints
  19. How performing multiple matrix multiplications in CUDA?
  20. What are the main purposes of std::forward and which problems does it solve?
  21. How does the custom deleter of std::unique_ptr work?
  22. Variadic Template in VS 2012 (Visual C++ November 2012 CTP)
  23. Operator overload which permits capturing with rvalue but not assigning to
  24. Why is auto_ptr being deprecated?
  25. shared_ptr is to weak_ptr as unique_ptr is to… what?
  26. Why was pair range access removed from C++11?
  27. Why the initializer of std::function has to be CopyConstructible?
  28. Interfacing C++11 array with Cython
  29. Why aren’t there compiler-generated swap() methods in C++0x?
  30. Why do we use std::function in C++ rather than the original C function pointer? [duplicate]

Leave a Comment