// { dg-do run { target c++11 } } #include int main() { int i = 1, j = 2; const int& ci = i; [&ci, &j] () -> void { j = ci; } (); assert(i == 1); assert(j == 1); //[&ci] () -> void { ci = 0; } (); { dg-error: cannot assign to const int& } return 0; }