gcc/testsuite/g++.dg/cpp0x/lambda/lambda-deduce-ext-neg2.C

   1 // Test that in pedantic mode, we warn about the extension to allow return
   2 // type deduction when the lambda contains more than just a single
   3 // return-statement.
   4
   5 // { dg-options "-std=c++0x -pedantic" }
   6
   7 bool b;
   8 template <class T>
   9 T f (T t)
  10 {
  11   [=] { return t+1; };          // OK
  12   return [=] {
  13     auto i = t+1;
  14     return i+1;                 // { dg-warning "only statement" }
  15   }();
  16 }
  17
  18 int main()
  19 {
  20   if (f(1) != 3)
  21     return 1;
  22 }