src/test/ui/rfc-2632-const-trait-impl/const-drop-fail.stock.stderr

   1 error[E0277]: can't drop `NonTrivialDrop` in const contexts
   2   --> $DIR/const-drop-fail.rs:44:5
   3    |
   4 LL |         const _: () = check($exp);
   5    |                       ----- required by a bound introduced by this call
   6 ...
   7 LL |     NonTrivialDrop,
   8    |     ^^^^^^^^^^^^^^ the trait `~const Destruct` is not implemented for `NonTrivialDrop`
   9    |
  10    = note: the trait bound `NonTrivialDrop: ~const Destruct` is not satisfied
  11 note: required by a bound in `check`
  12   --> $DIR/const-drop-fail.rs:35:19
  13    |
  14 LL | const fn check<T: ~const Destruct>(_: T) {}
  15    |                   ^^^^^^^^^^^^^^^ required by this bound in `check`
  16 help: consider borrowing here
  17    |
  18 LL |     &NonTrivialDrop,
  19    |     +
  20 LL |     &mut NonTrivialDrop,
  21    |     ++++
  22
  23 error[E0277]: can't drop `NonTrivialDrop` in const contexts
  24   --> $DIR/const-drop-fail.rs:46:5
  25    |
  26 LL |         const _: () = check($exp);
  27    |                       ----- required by a bound introduced by this call
  28 ...
  29 LL |     ConstImplWithDropGlue(NonTrivialDrop),
  30    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ within `ConstImplWithDropGlue`, the trait `~const Destruct` is not implemented for `NonTrivialDrop`
  31    |
  32 note: the trait `Destruct` is implemented for `NonTrivialDrop`, but that implementation is not `const`
  33   --> $DIR/const-drop-fail.rs:46:5
  34    |
  35 LL |     ConstImplWithDropGlue(NonTrivialDrop),
  36    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  37 note: required because it appears within the type `ConstImplWithDropGlue`
  38   --> $DIR/const-drop-fail.rs:16:8
  39    |
  40 LL | struct ConstImplWithDropGlue(NonTrivialDrop);
  41    |        ^^^^^^^^^^^^^^^^^^^^^
  42 note: required by a bound in `check`
  43   --> $DIR/const-drop-fail.rs:35:19
  44    |
  45 LL | const fn check<T: ~const Destruct>(_: T) {}
  46    |                   ^^^^^^^^^^^^^^^ required by this bound in `check`
  47
  48 error[E0277]: the trait bound `NonTrivialDrop: ~const A` is not satisfied
  49   --> $DIR/const-drop-fail.rs:48:47
  50    |
  51 LL |     ConstDropImplWithBounds::<NonTrivialDrop>(PhantomData),
  52    |     ----------------------------------------- ^^^^^^^^^^^ the trait `~const A` is not implemented for `NonTrivialDrop`
  53    |     |
  54    |     required by a bound introduced by this call
  55    |
  56 note: the trait `A` is implemented for `NonTrivialDrop`, but that implementation is not `const`
  57   --> $DIR/const-drop-fail.rs:48:47
  58    |
  59 LL |     ConstDropImplWithBounds::<NonTrivialDrop>(PhantomData),
  60    |                                               ^^^^^^^^^^^
  61 note: required by a bound in `ConstDropImplWithBounds`
  62   --> $DIR/const-drop-fail.rs:27:35
  63    |
  64 LL | struct ConstDropImplWithBounds<T: ~const A>(PhantomData<T>);
  65    |                                   ^^^^^^^^ required by this bound in `ConstDropImplWithBounds`
  66
  67 error[E0277]: the trait bound `NonTrivialDrop: ~const A` is not satisfied
  68   --> $DIR/const-drop-fail.rs:48:5
  69    |
  70 LL |     ConstDropImplWithBounds::<NonTrivialDrop>(PhantomData),
  71    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `~const A` is not implemented for `NonTrivialDrop`
  72    |
  73 note: the trait `A` is implemented for `NonTrivialDrop`, but that implementation is not `const`
  74   --> $DIR/const-drop-fail.rs:48:5
  75    |
  76 LL |     ConstDropImplWithBounds::<NonTrivialDrop>(PhantomData),
  77    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  78 note: required by a bound in `ConstDropImplWithBounds`
  79   --> $DIR/const-drop-fail.rs:27:35
  80    |
  81 LL | struct ConstDropImplWithBounds<T: ~const A>(PhantomData<T>);
  82    |                                   ^^^^^^^^ required by this bound in `ConstDropImplWithBounds`
  83
  84 error[E0367]: `Drop` impl requires `T: ~const A` but the struct it is implemented for does not
  85   --> $DIR/const-drop-fail.rs:55:9
  86    |
  87 LL | impl<T: ~const A> const Drop for ConstDropImplWithNonConstBounds<T> {
  88    |         ^^^^^^^^
  89    |
  90 note: the implementor must specify the same requirement
  91   --> $DIR/const-drop-fail.rs:53:1
  92    |
  93 LL | struct ConstDropImplWithNonConstBounds<T: A>(PhantomData<T>);
  94    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  95
  96 error: aborting due to 5 previous errors
  97
  98 Some errors have detailed explanations: E0277, E0367.
  99 For more information about an error, try `rustc --explain E0277`.