nordic-dev.net/rust
nordic-dev.net/rust
2
0
Fork 0
mirror of https://github.com/rust-lang/rust.git synced 2024-11-25 16:24:46 +00:00
Code Issues Packages Projects Releases Wiki Activity

Rollup merge of #93682 - PatchMixolydic:where-in-the-world-is-const_fn_trait_bound, r=oli-obk

Browse Source 
Update tracking issue for `const_fn_trait_bound`

It previously pointed to #57563, the conglomerate issue for `const fn` (presumably under the feature gate `const_fn`). This tracking issue doesn't mention anything about `const_fn_trait_bound`(the only occurrence of "trait bound" is for the now-removed `?const Trait` syntax), which can be confusing to people who want to find out more about trait bounds on `const fn`s. This pull request changes the tracking issue to one meant specifically for `const_fn_trait_bound`, #93706, which can help collect information on this feature's stabilization and point users towards `const_trait_impl` if they're looking for const-in-const-contexts trait bounds.

Fixes #93679.

`````@rustbot````` modify labels +A-const-fn +F-const_trait_impl
This commit is contained in:
Mara Bos 2022-02-07 14:08:37 +00:00 committed by GitHub
commit f4377a8932
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
5 changed files with 19 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
compiler/rustc_feature/src/active.rs
View File

@ -330,7 +330,7 @@ declare_features! (
/// Allows using and casting function pointers in a `const fn`.
(active, const_fn_fn_ptr_basics, "1.48.0", Some(57563), None),
/// Allows trait bounds in `const fn`.
(active, const_fn_trait_bound, "1.53.0", Some(57563), None),
(active, const_fn_trait_bound, "1.53.0", Some(93706), None),
/// Allows `for _ in _` loops in const contexts.
(active, const_for, "1.56.0", Some(87575), None),
/// Allows argument and return position `impl Trait` in a `const fn`.

6
src/test/ui/consts/const_fn_trait_bound.stock.stderr
View File

@ -4,7 +4,7 @@ error[E0658]: trait bounds other than `Sized` on const fn parameters are unstabl
LL | const fn test1<T: std::ops::Add>() {}
| ^
|
= note: see issue #57563 <https://github.com/rust-lang/rust/issues/57563> for more information
= note: see issue #93706 <https://github.com/rust-lang/rust/issues/93706> for more information
= help: add `#![feature(const_fn_trait_bound)]` to the crate attributes to enable
error[E0658]: trait objects in const fn are unstable
@ -13,7 +13,7 @@ error[E0658]: trait objects in const fn are unstable
LL | const fn test2(_x: &dyn Send) {}
| ^^
|
= note: see issue #57563 <https://github.com/rust-lang/rust/issues/57563> for more information
= note: see issue #93706 <https://github.com/rust-lang/rust/issues/93706> for more information
= help: add `#![feature(const_fn_trait_bound)]` to the crate attributes to enable
error[E0658]: trait objects in const fn are unstable
@ -22,7 +22,7 @@ error[E0658]: trait objects in const fn are unstable
LL | const fn test3() -> &'static dyn Send { loop {} }
| ^^^^^^^^^^^^^^^^^
|
= note: see issue #57563 <https://github.com/rust-lang/rust/issues/57563> for more information
= note: see issue #93706 <https://github.com/rust-lang/rust/issues/93706> for more information
= help: add `#![feature(const_fn_trait_bound)]` to the crate attributes to enable
error: aborting due to 3 previous errors

24
src/test/ui/consts/min_const_fn/min_const_fn.stderr
View File

@ -136,7 +136,7 @@ error[E0658]: trait bounds other than `Sized` on const fn parameters are unstabl
LL | const fn foo11<T: std::fmt::Display>(t: T) -> T { t }
| ^
|
= note: see issue #57563 <https://github.com/rust-lang/rust/issues/57563> for more information
= note: see issue #93706 <https://github.com/rust-lang/rust/issues/93706> for more information
= help: add `#![feature(const_fn_trait_bound)]` to the crate attributes to enable
error[E0658]: trait bounds other than `Sized` on const fn parameters are unstable
@ -145,7 +145,7 @@ error[E0658]: trait bounds other than `Sized` on const fn parameters are unstabl
LL | const fn foo11_2<T: Send>(t: T) -> T { t }
| ^
|
= note: see issue #57563 <https://github.com/rust-lang/rust/issues/57563> for more information
= note: see issue #93706 <https://github.com/rust-lang/rust/issues/93706> for more information
= help: add `#![feature(const_fn_trait_bound)]` to the crate attributes to enable
error[E0013]: constant functions cannot refer to statics
@ -218,7 +218,7 @@ LL |
LL | const fn foo(&self) {}
| ------------------- function declared as const here
|
= note: see issue #57563 <https://github.com/rust-lang/rust/issues/57563> for more information
= note: see issue #93706 <https://github.com/rust-lang/rust/issues/93706> for more information
= help: add `#![feature(const_fn_trait_bound)]` to the crate attributes to enable
error[E0658]: trait bounds other than `Sized` on const fn parameters are unstable
@ -230,7 +230,7 @@ LL |
LL | const fn foo2(&self) {}
| -------------------- function declared as const here
|
= note: see issue #57563 <https://github.com/rust-lang/rust/issues/57563> for more information
= note: see issue #93706 <https://github.com/rust-lang/rust/issues/93706> for more information
= help: add `#![feature(const_fn_trait_bound)]` to the crate attributes to enable
error[E0658]: trait bounds other than `Sized` on const fn parameters are unstable
@ -242,7 +242,7 @@ LL |
LL | const fn foo3(&self) {}
| -------------------- function declared as const here
|
= note: see issue #57563 <https://github.com/rust-lang/rust/issues/57563> for more information
= note: see issue #93706 <https://github.com/rust-lang/rust/issues/93706> for more information
= help: add `#![feature(const_fn_trait_bound)]` to the crate attributes to enable
error[E0658]: trait bounds other than `Sized` on const fn parameters are unstable
@ -251,7 +251,7 @@ error[E0658]: trait bounds other than `Sized` on const fn parameters are unstabl
LL | const fn no_apit2(_x: AlanTuring<impl std::fmt::Debug>) {}
| ^^^^^^^^^^^^^^^^^^^^
|
= note: see issue #57563 <https://github.com/rust-lang/rust/issues/57563> for more information
= note: see issue #93706 <https://github.com/rust-lang/rust/issues/93706> for more information
= help: add `#![feature(const_fn_trait_bound)]` to the crate attributes to enable
error[E0493]: destructors cannot be evaluated at compile-time
@ -268,7 +268,7 @@ error[E0658]: trait bounds other than `Sized` on const fn parameters are unstabl
LL | const fn no_apit(_x: impl std::fmt::Debug) {}
| ^^^^^^^^^^^^^^^^^^^^
|
= note: see issue #57563 <https://github.com/rust-lang/rust/issues/57563> for more information
= note: see issue #93706 <https://github.com/rust-lang/rust/issues/93706> for more information
= help: add `#![feature(const_fn_trait_bound)]` to the crate attributes to enable
error[E0493]: destructors cannot be evaluated at compile-time
@ -285,7 +285,7 @@ error[E0658]: trait objects in const fn are unstable
LL | const fn no_dyn_trait(_x: &dyn std::fmt::Debug) {}
| ^^
|
= note: see issue #57563 <https://github.com/rust-lang/rust/issues/57563> for more information
= note: see issue #93706 <https://github.com/rust-lang/rust/issues/93706> for more information
= help: add `#![feature(const_fn_trait_bound)]` to the crate attributes to enable
error[E0658]: trait objects in const fn are unstable
@ -294,7 +294,7 @@ error[E0658]: trait objects in const fn are unstable
LL | const fn no_dyn_trait_ret() -> &'static dyn std::fmt::Debug { &() }
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: see issue #57563 <https://github.com/rust-lang/rust/issues/57563> for more information
= note: see issue #93706 <https://github.com/rust-lang/rust/issues/93706> for more information
= help: add `#![feature(const_fn_trait_bound)]` to the crate attributes to enable
error[E0658]: trait objects in const fn are unstable
@ -305,7 +305,7 @@ LL | const fn really_no_traits_i_mean_it() { (&() as &dyn std::fmt::Debug, ()).1
| |
| function declared as const here
|
= note: see issue #57563 <https://github.com/rust-lang/rust/issues/57563> for more information
= note: see issue #93706 <https://github.com/rust-lang/rust/issues/93706> for more information
= help: add `#![feature(const_fn_trait_bound)]` to the crate attributes to enable
error[E0658]: trait objects in const fn are unstable
@ -316,7 +316,7 @@ LL | const fn really_no_traits_i_mean_it() { (&() as &dyn std::fmt::Debug, ()).1
| |
| function declared as const here
|
= note: see issue #57563 <https://github.com/rust-lang/rust/issues/57563> for more information
= note: see issue #93706 <https://github.com/rust-lang/rust/issues/93706> for more information
= help: add `#![feature(const_fn_trait_bound)]` to the crate attributes to enable
error[E0658]: trait objects in const fn are unstable
@ -327,7 +327,7 @@ LL | const fn really_no_traits_i_mean_it() { (&() as &dyn std::fmt::Debug, ()).1
| |
| function declared as const here
|
= note: see issue #57563 <https://github.com/rust-lang/rust/issues/57563> for more information
= note: see issue #93706 <https://github.com/rust-lang/rust/issues/93706> for more information
= help: add `#![feature(const_fn_trait_bound)]` to the crate attributes to enable
error[E0658]: function pointers cannot appear in constant functions

4
src/test/ui/consts/min_const_fn/min_const_fn_dyn.stderr
View File

@ -6,7 +6,7 @@ LL | const fn no_inner_dyn_trait2(x: Hide) {
LL | x.0.field;
| ^^^^^^^^^
|
= note: see issue #57563 <https://github.com/rust-lang/rust/issues/57563> for more information
= note: see issue #93706 <https://github.com/rust-lang/rust/issues/93706> for more information
= help: add `#![feature(const_fn_trait_bound)]` to the crate attributes to enable
error[E0658]: trait objects in const fn are unstable
@ -17,7 +17,7 @@ LL | const fn no_inner_dyn_trait_ret() -> Hide { Hide(HasDyn { field: &0 }) }
| |
| function declared as const here
|
= note: see issue #57563 <https://github.com/rust-lang/rust/issues/57563> for more information
= note: see issue #93706 <https://github.com/rust-lang/rust/issues/93706> for more information
= help: add `#![feature(const_fn_trait_bound)]` to the crate attributes to enable
error: aborting due to 2 previous errors

2
src/test/ui/nll/issue-55825-const-fn.stderr
View File

@ -4,7 +4,7 @@ error[E0658]: trait objects in const fn are unstable
LL | const fn no_dyn_trait_ret() -> &'static dyn std::fmt::Debug { &() }
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: see issue #57563 <https://github.com/rust-lang/rust/issues/57563> for more information
= note: see issue #93706 <https://github.com/rust-lang/rust/issues/93706> for more information
= help: add `#![feature(const_fn_trait_bound)]` to the crate attributes to enable
error: aborting due to previous error