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  1. #include <vector>
  2. class A {
  3.  public:
  4.   A() {}
  5. };
  6.  
  7. template<typename T>
  8. void foo(const T &p) {
  9.   static_assert(
  10.     std::is_pod<
  11.         typename std::remove_reference<
  12.           decltype(p[0])
  13.         >::type
  14.     >::value, "MUST BE POD");
  15. }
  16. int main() {
  17.   int b[10];
  18.   A   c[10];
  19.   int *d = b;
  20.   A   *e = c;
  21.  
  22.   foo(std::vector<int>(1)); // OK
  23.   foo(b);                   // OK
  24.   foo(d);                   // OK
  25. //  foo(std::vector<A>(1));   // ERROR
  26. //  foo(c);                   // ERROR
  27. //  foo(e);                   // ERROR
  28.   return 0;
  29. }
Success #stdin #stdout 0s 3468KB
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https://ideone.com/FeTBqK
language:
C++14 (gcc 8.3)
created:
12 years ago
visibility:
public

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