for-range-unused.cpp revision 762bb9d0ad20320b9f97a841dce57ba5e8e48b07 
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
5template <typename T>
6  struct Vector {
7    void doIt() {
8      int a; // expected-warning {{unused variable 'a'}}
9
10      for (auto& e : elements)
11        ;
12    }
13
14    T elements[10];
15  };
16
17
18int main(int, char**) {
19  Vector<int>    vector;
20  vector.doIt();
21}
22