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Remove E0017 from error codes index

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This commit is contained in:
Christian Poveda 2019-11-29 21:54:27 -05:00
parent 416b439ffb
commit e01ad6a01a
2 changed files with 0 additions and 21 deletions
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1
src/librustc_error_codes/error_codes.rs
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@ -18,7 +18,6 @@ E0010: include_str!("./error_codes/E0010.md"),
E0013: include_str!("./error_codes/E0013.md"),
E0014: include_str!("./error_codes/E0014.md"),
E0015: include_str!("./error_codes/E0015.md"),
E0017: include_str!("./error_codes/E0017.md"),
E0019: include_str!("./error_codes/E0019.md"),
E0023: include_str!("./error_codes/E0023.md"),
E0025: include_str!("./error_codes/E0025.md"),

20
src/librustc_error_codes/error_codes/E0017.md
View file

@ -1,20 +0,0 @@
References in statics and constants may only refer to immutable values.
Erroneous code example:
```compile_fail,E0017
static X: i32 = 1;
const C: i32 = 2;
// these three are not allowed:
const CR: &mut i32 = &mut C;
static STATIC_REF: &'static mut i32 = &mut X;
static CONST_REF: &'static mut i32 = &mut C;
```
Statics are shared everywhere, and if they refer to mutable data one might
violate memory safety since holding multiple mutable references to shared data
is not allowed.
If you really want global mutable state, try using `static mut` or a global
`UnsafeCell`.