gcc/testsuite/g++.dg/cpp0x/lambda/lambda-const.C

   1 // { dg-do "run" }
   2 // { dg-options "-std=c++0x" }
   3
   4 #include <cassert>
   5
   6 template<typename F>
   7 void call(const F& f) { f(); }
   8
   9 int main() {
  10   call([] () -> void {});
  11   //call([] () mutable -> void {}); // { dg-error: "`f' does not have const `operator()'" }
  12
  13   int i = -1;
  14   call([&i] () -> void { i = 0; });
  15   assert(i == 0);
  16   //call([i] () -> void { i = 0; }); // { dg-error: "assignment to non-reference capture in const lambda" }
  17
  18   return 0;
  19 }
  20