gcc/testsuite/g++.dg/cpp1z/nodiscard2.C

   1 // { dg-do compile { target c++11 } }
   2
   3 struct [[nodiscard]] A { };     // { dg-message "" }
   4
   5 A f();                          // { dg-message "" }
   6
   7 int main()
   8 {
   9   f();                          // { dg-warning "Wunused-result" }
  10 }