bors
63d16b5a98
Auto merge of #117472 - jmillikin:stable-c-str-literals, r=Nilstrieb
...
Stabilize C string literals
RFC: https://rust-lang.github.io/rfcs/3348-c-str-literal.html
Tracking issue: https://github.com/rust-lang/rust/issues/105723
Documentation PR (reference manual): https://github.com/rust-lang/reference/pull/1423
# Stabilization report
Stabilizes C string and raw C string literals (`c"..."` and `cr#"..."#`), which are expressions of type [`&CStr`](https://doc.rust-lang.org/stable/core/ffi/struct.CStr.html ). Both new literals require Rust edition 2021 or later.
```rust
const HELLO: &core::ffi::CStr = c"Hello, world!";
```
C strings may contain any byte other than `NUL` (`b'\x00'`), and their in-memory representation is guaranteed to end with `NUL`.
## Implementation
Originally implemented by PR https://github.com/rust-lang/rust/pull/108801 , which was reverted due to unintentional changes to lexer behavior in Rust editions < 2021.
The current implementation landed in PR https://github.com/rust-lang/rust/pull/113476 , which restricts C string literals to Rust edition >= 2021.
## Resolutions to open questions from the RFC
* Adding C character literals (`c'.'`) of type `c_char` is not part of this feature.
* Support for `c"..."` literals does not prevent `c'.'` literals from being added in the future.
* C string literals should not be blocked on making `&CStr` a thin pointer.
* It's possible to declare constant expressions of type `&'static CStr` in stable Rust (as of v1.59), so C string literals are not adding additional coupling on the internal representation of `CStr`.
* The unstable `concat_bytes!` macro should not accept `c"..."` literals.
* C strings have two equally valid `&[u8]` representations (with or without terminal `NUL`), so allowing them to be used in `concat_bytes!` would be ambiguous.
* Adding a type to represent C strings containing valid UTF-8 is not part of this feature.
* Support for a hypothetical `&Utf8CStr` may be explored in the future, should such a type be added to Rust.
2023-12-01 13:33:55 +00:00
..
2023-11-20 13:15:08 +01:00
2023-01-11 09:32:08 +00:00
2023-04-15 16:11:42 -07:00
2023-04-15 16:11:42 -07:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-07-14 16:53:36 +01:00
2023-08-02 13:40:28 +03:00
2023-01-11 09:32:08 +00:00
2023-11-24 19:15:52 +01:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-04-12 22:50:10 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-07-14 16:53:36 +01:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-04-12 22:50:10 +00:00
2023-01-11 09:32:08 +00:00
2023-10-25 12:04:54 +00:00
2023-10-25 12:04:54 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-30 20:12:19 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-07-14 16:53:36 +01:00
2023-01-11 09:32:08 +00:00
2023-07-14 16:53:36 +01:00
2023-01-11 09:32:08 +00:00
2023-11-24 19:15:52 +01:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-06-20 17:20:57 +02:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-11-24 19:15:52 +01:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-04-10 22:02:52 +02:00
2023-04-10 22:02:52 +02:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-11-24 19:15:52 +01:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-07-27 10:37:31 +02:00
2023-01-11 09:32:08 +00:00
2023-06-29 13:42:58 +03:00
2023-06-29 13:42:58 +03:00
2023-01-11 09:32:08 +00:00
2023-07-27 10:37:31 +02:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-11-24 19:15:52 +01:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-07-14 16:53:36 +01:00
2023-01-11 09:32:08 +00:00
2023-07-14 16:53:36 +01:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-07-14 16:53:36 +01:00
2023-11-20 13:15:08 +01:00
2023-11-24 19:15:52 +01:00
2023-07-27 10:37:31 +02:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-16 18:33:25 +00:00
2023-01-16 18:33:25 +00:00
2023-01-11 09:32:08 +00:00
2023-07-14 16:53:36 +01:00
2023-01-11 09:32:08 +00:00
2023-11-24 19:15:52 +01:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-11-24 19:15:52 +01:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-07-14 16:53:36 +01:00
2023-07-27 10:37:31 +02:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-20 17:13:55 -05:00
2023-01-20 17:13:55 -05:00
2023-01-11 09:32:08 +00:00
2023-11-24 19:15:52 +01:00
2023-07-27 10:37:31 +02:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-11-24 19:15:52 +01:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-07-14 16:53:36 +01:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-11-24 19:15:52 +01:00
2023-01-11 09:32:08 +00:00
2023-11-24 19:15:52 +01:00
2023-01-11 09:32:08 +00:00
2023-11-24 19:15:52 +01:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-11-24 19:15:52 +01:00
2023-01-11 09:32:08 +00:00
2023-11-24 19:15:52 +01:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-11-24 19:15:52 +01:00
2023-07-27 10:37:31 +02:00
2023-01-11 09:32:08 +00:00
2023-11-24 19:15:52 +01:00
2023-01-11 09:32:08 +00:00
2023-11-24 19:15:52 +01:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-07-14 16:53:36 +01:00
2023-01-11 09:32:08 +00:00
2023-11-24 19:15:52 +01:00
2023-10-12 08:46:15 +11:00
2023-10-12 08:46:15 +11:00
2023-10-12 08:46:15 +11:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-11-24 19:15:52 +01:00
2023-01-11 09:32:08 +00:00
2023-07-14 16:53:36 +01:00
2023-01-11 09:32:08 +00:00
2023-11-24 19:15:52 +01:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-07-14 16:53:36 +01:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-11-24 19:15:52 +01:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-11-24 19:15:52 +01:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-11-24 19:15:52 +01:00
2023-04-10 22:02:52 +02:00
2023-04-10 22:02:52 +02:00
2023-01-11 09:32:08 +00:00
2023-01-11 19:46:45 +00:00
2023-08-02 14:54:37 +08:00
2023-11-24 19:15:52 +01:00
2023-01-11 09:32:08 +00:00
2023-11-24 19:15:52 +01:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-11-24 19:15:52 +01:00
2023-01-11 09:32:08 +00:00
2023-11-24 19:15:52 +01:00
2023-11-01 09:16:34 +09:00
2023-11-01 09:16:34 +09:00
2023-01-11 09:32:08 +00:00
2023-11-24 19:15:52 +01:00
2023-01-11 09:32:08 +00:00
2023-11-24 19:15:52 +01:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-11-24 19:15:52 +01:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-10-05 01:04:41 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-07-14 16:53:36 +01:00
2023-01-11 09:32:08 +00:00
2023-11-24 19:15:52 +01:00
2023-07-27 10:37:31 +02:00
2023-07-27 10:37:31 +02:00
2023-01-11 09:32:08 +00:00
2023-11-24 19:15:52 +01:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-08-08 18:09:56 -07:00
2023-08-08 18:09:56 -07:00
2023-01-11 09:32:08 +00:00
2023-07-14 16:53:36 +01:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-04-15 16:11:42 -07:00
2023-04-15 16:11:42 -07:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-07-14 16:53:36 +01:00
2023-01-11 09:32:08 +00:00
2023-07-14 16:53:36 +01:00
2023-01-11 09:32:08 +00:00
2023-11-24 19:15:52 +01:00
2023-08-08 11:40:35 -04:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-07-14 16:53:36 +01:00
2023-01-11 09:32:08 +00:00
2023-11-24 19:15:52 +01:00
2023-01-11 09:32:08 +00:00
2023-07-14 16:53:36 +01:00
2023-01-11 09:32:08 +00:00
2023-07-14 16:53:36 +01:00
2023-08-08 18:09:56 -07:00
2023-08-08 18:09:56 -07:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-13 10:13:49 +01:00
2023-01-13 10:13:49 +01:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-10-05 01:04:41 +00:00
2023-01-13 20:36:03 +00:00
2023-10-05 01:04:41 +00:00
2023-01-16 18:33:25 +00:00
2023-01-16 18:33:25 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-03-14 19:05:21 +00:00
2023-03-14 19:05:21 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-11-24 19:15:52 +01:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-10-05 01:04:41 +00:00
2023-01-11 09:32:08 +00:00
2023-10-04 21:09:54 +00:00
2023-01-11 09:32:08 +00:00
2023-11-24 19:15:52 +01:00
2023-03-14 19:05:21 +00:00
2023-03-14 19:12:42 +00:00
2023-03-14 19:05:21 +00:00
2023-03-14 19:12:42 +00:00
2023-03-14 19:05:21 +00:00
2023-03-14 19:12:42 +00:00
2023-03-14 19:05:21 +00:00
2023-11-24 19:15:52 +01:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-04-03 09:24:11 +02:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-10-04 21:09:54 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-04-17 13:01:03 +01:00
2023-11-24 19:15:52 +01:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-11-24 19:15:52 +01:00
2023-01-11 09:32:08 +00:00
2023-11-24 19:15:52 +01:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00
2023-01-11 09:32:08 +00:00