gcc/testsuite/gdc.test/compilable/test21243.d

   1 // Parsing - expressions
   2 auto a = auto ref (int x) => x;
   3 auto b = auto ref (int x) { return x; };
   4 auto c = function auto ref (int x) { return x; };
   5 auto d = delegate auto ref (int x) { return x; };
   6
   7 // Parsing - aliases
   8 alias e = auto ref (int x) => x;
   9 alias f = auto ref (int x) { return x; };
  10 alias g = function auto ref (int x) { return x; };
  11 alias h = delegate auto ref (int x) { return x; };
  12
  13 // Semantic
  14 void test()
  15 {
  16     alias fun(alias x) = auto ref () => x;
  17     int n = 123;
  18     auto _ = fun!123();
  19     static assert(!__traits(compiles, &fun!123())); // rvalue
  20     fun!n() = 456; // lvalue
  21 }