fork download
copy 
  1. template <typename T>
  2. struct A {
  3.     struct B {
  4.     };
  5. };
  6.  
  7. struct C {
  8.     typedef A<C> D;
  9.  
  10.     int f() {
  11.         typename D::B p;
  12.         return 0;
  13.     }
  14. };
  15.  
  16. C gc;
  17. int x = gc.f();
  18.  
  19. template <>
  20. struct A<C> {
  21.     struct B {
  22.         B() {
  23.             cout << "B::B()" << endl;
  24.         }
  25.  
  26.         ~B() {
  27.             cout << "B::~B()" << endl;
  28.         }
  29.     };
  30. };
  31.  
  32. int main() {
  33. }
  34.  
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin
copy 
Standard input is empty
compilation info 
prog.cpp:20:8: error: specialization of 'A<C>' after instantiation
prog.cpp:20:8: error: redefinition of 'struct A<C>'
prog.cpp:2:10: error: previous definition of 'struct A<C>'
stdout
copy 
Standard output is empty
https://ideone.com/vieT7
language:
C++14 (gcc 8.3)
created:
12 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!