rust/tests/ui/transmutability/unions/should_reject_contraction.stderr
Bryan Garza 36febe1f4d Improve safe transmute error reporting
This patch updates the error reporting when Safe Transmute is not
possible between 2 types by including the reason.

Also, fix some small bugs that occur when computing the `Answer` for
transmutability.
2023-04-13 21:57:08 +00:00

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869 B
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error[E0277]: `Superset` cannot be safely transmuted into `Subset` in the defining scope of `assert::Context`
--> $DIR/should_reject_contraction.rs:35:41
|
LL | assert::is_transmutable::<Superset, Subset>();
| ^^^^^^ At least one value of `Superset` isn't a bit-valid value of `Subset`
|
note: required by a bound in `is_transmutable`
--> $DIR/should_reject_contraction.rs:13:14
|
LL | pub fn is_transmutable<Src, Dst>()
| --------------- required by a bound in this function
LL | where
LL | Dst: BikeshedIntrinsicFrom<Src, Context, { Assume::SAFETY }>
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `is_transmutable`
error: aborting due to previous error
For more information about this error, try `rustc --explain E0277`.