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error[E0277]: `&T` needs to have the same ABI as a pointer
--> $DIR/check-size-at-cast-polymorphic-bad.rs:15:15
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LL | fn polymorphic<T: Debug + ?Sized>(t: &T) {
| - this type parameter needs to be `Sized`
LL | dyn_debug(t);
| ^ `&T` needs to be a pointer-like type
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= note: required for `&T` to implement `PointerLike`
help: consider removing the `?Sized` bound to make the type parameter `Sized`
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LL - fn polymorphic<T: Debug + ?Sized>(t: &T) {
LL + fn polymorphic<T: Debug>(t: &T) {
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error: aborting due to 1 previous error
For more information about this error, try `rustc --explain E0277`.
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