src/test/ui/regions/regions-close-object-into-object-2.stderr

   1 error: lifetime may not live long enough
   2   --> $DIR/regions-close-object-into-object-2.rs:9:5
   3    |
   4 LL | fn g<'a, T: 'static>(v: Box<dyn A<T> + 'a>) -> Box<dyn X + 'static> {
   5    |      -- lifetime `'a` defined here
   6 LL |     Box::new(B(&*v)) as Box<dyn X>
   7    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ returning this value requires that `'a` must outlive `'static`
   8    |
   9 help: consider changing the trait object's explicit `'static` bound to the lifetime of argument `v`
  10    |
  11 LL | fn g<'a, T: 'static>(v: Box<dyn A<T> + 'a>) -> Box<dyn X + 'a> {
  12    |                                                            ~~
  13 help: alternatively, add an explicit `'static` bound to this reference
  14    |
  15 LL | fn g<'a, T: 'static>(v: Box<(dyn A<T> + 'static)>) -> Box<dyn X + 'static> {
  16    |                         ~~~~~~~~~~~~~~~~~~~~~~~~~
  17
  18 error[E0515]: cannot return value referencing local data `*v`
  19   --> $DIR/regions-close-object-into-object-2.rs:9:5
  20    |
  21 LL |     Box::new(B(&*v)) as Box<dyn X>
  22    |     ^^^^^^^^^^^---^^^^^^^^^^^^^^^^
  23    |     |          |
  24    |     |          `*v` is borrowed here
  25    |     returns a value referencing data owned by the current function
  26
  27 error: aborting due to 2 previous errors
  28
  29 For more information about this error, try `rustc --explain E0515`.