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Use wide pointers consistenly across the compiler

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Urgau 2024-10-03 15:05:23 +02:00
parent f7c8928f03
commit 018ba0528f
41 changed files with 120 additions and 120 deletions
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10
compiler/rustc_error_codes/src/error_codes/E0607.md
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@ -1,4 +1,4 @@
A cast between a thin and a fat pointer was attempted.
A cast between a thin and a wide pointer was attempted.
Erroneous code example:
@ -7,18 +7,18 @@ let v = core::ptr::null::<u8>();
v as *const [u8];
```
First: what are thin and fat pointers?
First: what are thin and wide 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
Wide 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. For example,
slices and trait objects are DSTs. In the case of slices, the additional
information the fat pointer holds is their size.
information the wide pointer holds is their size.
To fix this error, don't try to cast directly between thin and fat pointers.
To fix this error, don't try to cast directly between thin and wide pointers.
For more information about type casts, take a look at the section of the
[The Rust Reference][1] on type cast expressions.