gcc/testsuite/gdc.test/fail_compilation/fail20108.d

   1 // REQUIRED_ARGS: -preview=dip1000
   2 /*
   3 TEST_OUTPUT:
   4 ---
   5 fail_compilation/fail20108.d(15): Error: address of variable `y` assigned to `x` with longer lifetime
   6 fail_compilation/fail20108.d(16): Error: scope parameter `x` may not be returned
   7 fail_compilation/fail20108.d(23): Error: address of variable `y` assigned to `x` with longer lifetime
   8 fail_compilation/fail20108.d(24): Error: scope variable `x` may not be returned
   9 ---
  10 */
  11
  12 @safe auto test(scope int* x)
  13 {
  14     int y = 69;
  15     x = &y; //bad
  16     return x;
  17 }
  18
  19 @safe auto test2()
  20 {
  21     scope int* x;
  22     int y = 69;
  23     x = &y; //bad
  24     return x;
  25 }
  26
  27 void main()
  28 {
  29     auto y = test(null);
  30     auto z = test2();
  31 }