clang/test/SemaCXX/for-range-unused.cpp

   1 // RUN: %clang_cc1 -fsyntax-only -verify %s -std=c++11 -Wunused
   2
   3 // PR9968: We used to warn that __range is unused in a dependent for-range.
   4
   5 template <typename T>
   6   struct Vector {
   7     void doIt() {
   8       int a; // expected-warning {{unused variable 'a'}}
   9
  10       for (auto& e : elements) // expected-warning {{unused variable 'e'}}
  11         ;
  12     }
  13
  14     T elements[10];
  15   };
  16
  17
  18 int main(int, char**) {
  19   Vector<int>    vector;
  20   vector.doIt(); // expected-note {{here}}
  21 }