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Improve wording of E0607 explanation

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Camelid 2020-09-07 18:25:14 -07:00
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compiler/rustc_error_codes/src/error_codes/E0607.md
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@ -12,15 +12,15 @@ First: what are thin and fat pointers?
Thin pointers are "simple" pointers: they are purely a reference to a memory
address.
Fat pointers are pointers referencing Dynamically Sized Types (also called DST).
DST don't have a statically known size, therefore they can only exist behind
some kind of pointers that contain additional information. Slices and trait
objects are DSTs. In the case of slices, the additional information the fat
pointer holds is their size.
Fat pointers are pointers referencing Dynamically Sized Types (also called
DSTs). DSTs don't have a statically known size, therefore they can only exist
behind some kind of pointer that contains additional information. Slices and
trait objects are DSTs. In the case of slices, the additional information the
fat pointer holds is their size.
To fix this error, don't try to cast directly between thin and fat pointers.
For more information about casts, take a look at the Type cast section in
[The Reference Book][1].
For more information about type casts, take a look at the section of the
[The Rust Reference][1] on type cast expressions.
[1]: https://doc.rust-lang.org/reference/expressions/operator-expr.html#type-cast-expressions