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  1. #include <iostream>
  2. #include <type_traits>
  3.  
  4. const int* func() { return nullptr; }
  5.  
  6. int main() {
  7.   const auto p = func();
  8.   static_assert(std::is_same<decltype(p), const int* const>::value, "unexpected type");
  9.   p = nullptr; // error: assignment of read-only variable ‘p’
  10. }
Compilation error #stdin compilation error #stdout 0s 4428KB
comments (?)
stdin 
Standard input is empty
compilation info 
prog.cpp: In function ‘int main()’:
prog.cpp:9:7: error: assignment of read-only variable ‘p’
   p = nullptr; // error: assignment of read-only variable ‘p’
       ^~~~~~~
stdout 
Standard output is empty
https://ideone.com/j9djd9
language:
C++14 (gcc 8.3)
created:
6 years ago
visibility:
public

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