mirror of
https://github.com/rust-lang/rust.git
synced 2025-10-30 20:44:34 +00:00
0e4de4ceb0
In [137653], the lang and libs-API teams did a joint FCP to deprecate
and eventually remove the long-unstable `concat_idents!` macro. The
deprecation is landing in 1.88, so do the removal here (target version
1.90).
This macro has been superseded by the more recent `${concat(...)}`
metavariable expression language feature, which avoids some of the
limitations of `concat_idents!`. The metavar expression is unstably
available under the [`macro_metavar_expr_concat`] feature.
History is mildly interesting here: `concat_idents!` goes back to 2011
when it was introduced with 513276e595f8 ("Add #concat_idents[] and
about the same:
let asdf_fdsa = "<.<";
assert(#concat_idents[asd,f_f,dsa] == "<.<");
assert(#ident_to_str[use_mention_distinction]
== "use_mention_distinction");
(That test existed from introduction until its removal here.)
Closes: https://www.github.com/rust-lang/rust/issues/29599
[137653]: https://www.github.com/rust-lang/rust/pull/137653
[`macro_metavar_expr_concat`]: https://www.github.com/rust-lang/rust/issues/124225
260 lines
7.1 KiB
Plaintext
260 lines
7.1 KiB
Plaintext
error: the `#[default]` attribute may only be used on unit enum variants
|
|
--> $DIR/macros-nonfatal-errors.rs:13:5
|
|
|
|
|
LL | #[default]
|
|
| ^^^^^^^^^^
|
|
|
|
|
= help: consider a manual implementation of `Default`
|
|
|
|
error: the `#[default]` attribute may only be used on unit enum variants
|
|
--> $DIR/macros-nonfatal-errors.rs:18:36
|
|
|
|
|
LL | struct DefaultInnerAttrTupleStruct(#[default] ());
|
|
| ^^^^^^^^^^
|
|
|
|
|
= help: consider a manual implementation of `Default`
|
|
|
|
error: the `#[default]` attribute may only be used on unit enum variants
|
|
--> $DIR/macros-nonfatal-errors.rs:22:1
|
|
|
|
|
LL | #[default]
|
|
| ^^^^^^^^^^
|
|
|
|
|
= help: consider a manual implementation of `Default`
|
|
|
|
error: the `#[default]` attribute may only be used on unit enum variants
|
|
--> $DIR/macros-nonfatal-errors.rs:26:1
|
|
|
|
|
LL | #[default]
|
|
| ^^^^^^^^^^
|
|
|
|
|
= help: consider a manual implementation of `Default`
|
|
|
|
error: the `#[default]` attribute may only be used on unit enum variants
|
|
--> $DIR/macros-nonfatal-errors.rs:36:11
|
|
|
|
|
LL | Foo = #[default] 0,
|
|
| ^^^^^^^^^^
|
|
|
|
|
= help: consider a manual implementation of `Default`
|
|
|
|
error: the `#[default]` attribute may only be used on unit enum variants
|
|
--> $DIR/macros-nonfatal-errors.rs:37:14
|
|
|
|
|
LL | Bar([u8; #[default] 1]),
|
|
| ^^^^^^^^^^
|
|
|
|
|
= help: consider a manual implementation of `Default`
|
|
|
|
error[E0665]: `#[derive(Default)]` on enum with no `#[default]`
|
|
--> $DIR/macros-nonfatal-errors.rs:42:10
|
|
|
|
|
LL | #[derive(Default)]
|
|
| ^^^^^^^
|
|
LL | / enum NoDeclaredDefault {
|
|
LL | | Foo,
|
|
LL | | Bar,
|
|
LL | | }
|
|
| |_- this enum needs a unit variant marked with `#[default]`
|
|
|
|
|
help: make this unit variant default by placing `#[default]` on it
|
|
|
|
|
LL | #[default] Foo,
|
|
| ++++++++++
|
|
help: make this unit variant default by placing `#[default]` on it
|
|
|
|
|
LL | #[default] Bar,
|
|
| ++++++++++
|
|
|
|
error[E0665]: `#[derive(Default)]` on enum with no `#[default]`
|
|
--> $DIR/macros-nonfatal-errors.rs:48:10
|
|
|
|
|
LL | #[derive(Default)]
|
|
| ^^^^^^^
|
|
LL | / enum NoDeclaredDefaultWithoutUnitVariant {
|
|
LL | | Foo(i32),
|
|
LL | | Bar(i32),
|
|
LL | | }
|
|
| |_- this enum needs a unit variant marked with `#[default]`
|
|
|
|
error: multiple declared defaults
|
|
--> $DIR/macros-nonfatal-errors.rs:54:10
|
|
|
|
|
LL | #[derive(Default)]
|
|
| ^^^^^^^
|
|
...
|
|
LL | Foo,
|
|
| --- first default
|
|
LL | #[default]
|
|
LL | Bar,
|
|
| --- additional default
|
|
LL | #[default]
|
|
LL | Baz,
|
|
| --- additional default
|
|
|
|
|
= note: only one variant can be default
|
|
|
|
error: `#[default]` attribute does not accept a value
|
|
--> $DIR/macros-nonfatal-errors.rs:66:5
|
|
|
|
|
LL | #[default = 1]
|
|
| ^^^^^^^^^^^^^^
|
|
|
|
|
= help: try using `#[default]`
|
|
|
|
error: multiple `#[default]` attributes
|
|
--> $DIR/macros-nonfatal-errors.rs:74:5
|
|
|
|
|
LL | #[default]
|
|
| ---------- `#[default]` used here
|
|
LL | #[default]
|
|
| ---------- `#[default]` used again here
|
|
LL | Foo,
|
|
| ^^^
|
|
|
|
|
= note: only one `#[default]` attribute is needed
|
|
help: try removing this
|
|
--> $DIR/macros-nonfatal-errors.rs:73:5
|
|
|
|
|
LL | #[default]
|
|
| ^^^^^^^^^^
|
|
|
|
error: multiple `#[default]` attributes
|
|
--> $DIR/macros-nonfatal-errors.rs:84:5
|
|
|
|
|
LL | #[default]
|
|
| ---------- `#[default]` used here
|
|
LL | #[default]
|
|
| ---------- `#[default]` used again here
|
|
...
|
|
LL | Foo,
|
|
| ^^^
|
|
|
|
|
= note: only one `#[default]` attribute is needed
|
|
help: try removing these
|
|
--> $DIR/macros-nonfatal-errors.rs:81:5
|
|
|
|
|
LL | #[default]
|
|
| ^^^^^^^^^^
|
|
LL | #[default]
|
|
| ^^^^^^^^^^
|
|
LL | #[default]
|
|
| ^^^^^^^^^^
|
|
|
|
error: the `#[default]` attribute may only be used on unit enum variants
|
|
--> $DIR/macros-nonfatal-errors.rs:91:5
|
|
|
|
|
LL | Foo {},
|
|
| ^^^
|
|
|
|
|
= help: consider a manual implementation of `Default`
|
|
|
|
error: default variant must be exhaustive
|
|
--> $DIR/macros-nonfatal-errors.rs:99:5
|
|
|
|
|
LL | #[non_exhaustive]
|
|
| ----------------- declared `#[non_exhaustive]` here
|
|
LL | Foo,
|
|
| ^^^
|
|
|
|
|
= help: consider a manual implementation of `Default`
|
|
|
|
error: asm template must be a string literal
|
|
--> $DIR/macros-nonfatal-errors.rs:104:10
|
|
|
|
|
LL | asm!(invalid);
|
|
| ^^^^^^^
|
|
|
|
error: argument must be a string literal
|
|
--> $DIR/macros-nonfatal-errors.rs:107:17
|
|
|
|
|
LL | option_env!(invalid);
|
|
| ^^^^^^^
|
|
|
|
error: expected string literal
|
|
--> $DIR/macros-nonfatal-errors.rs:108:10
|
|
|
|
|
LL | env!(invalid);
|
|
| ^^^^^^^
|
|
|
|
error: `env!()` takes 1 or 2 arguments
|
|
--> $DIR/macros-nonfatal-errors.rs:109:5
|
|
|
|
|
LL | env!(foo, abr, baz);
|
|
| ^^^^^^^^^^^^^^^^^^^
|
|
|
|
error: environment variable `RUST_HOPEFULLY_THIS_DOESNT_EXIST` not defined at compile time
|
|
--> $DIR/macros-nonfatal-errors.rs:110:5
|
|
|
|
|
LL | env!("RUST_HOPEFULLY_THIS_DOESNT_EXIST");
|
|
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
|
|
|
|
= help: use `std::env::var("RUST_HOPEFULLY_THIS_DOESNT_EXIST")` to read the variable at run time
|
|
|
|
error: format argument must be a string literal
|
|
--> $DIR/macros-nonfatal-errors.rs:112:13
|
|
|
|
|
LL | format!(invalid);
|
|
| ^^^^^^^
|
|
|
|
|
help: you might be missing a string literal to format with
|
|
|
|
|
LL | format!("{}", invalid);
|
|
| +++++
|
|
|
|
error: argument must be a string literal
|
|
--> $DIR/macros-nonfatal-errors.rs:114:14
|
|
|
|
|
LL | include!(invalid);
|
|
| ^^^^^^^
|
|
|
|
error: argument must be a string literal
|
|
--> $DIR/macros-nonfatal-errors.rs:116:18
|
|
|
|
|
LL | include_str!(invalid);
|
|
| ^^^^^^^
|
|
|
|
error: couldn't read `$DIR/i'd be quite surprised if a file with this name existed`: $FILE_NOT_FOUND_MSG
|
|
--> $DIR/macros-nonfatal-errors.rs:117:5
|
|
|
|
|
LL | include_str!("i'd be quite surprised if a file with this name existed");
|
|
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
|
|
|
error: argument must be a string literal
|
|
--> $DIR/macros-nonfatal-errors.rs:118:20
|
|
|
|
|
LL | include_bytes!(invalid);
|
|
| ^^^^^^^
|
|
|
|
error: couldn't read `$DIR/i'd be quite surprised if a file with this name existed`: $FILE_NOT_FOUND_MSG
|
|
--> $DIR/macros-nonfatal-errors.rs:119:5
|
|
|
|
|
LL | include_bytes!("i'd be quite surprised if a file with this name existed");
|
|
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
|
|
|
error: trace_macros! accepts only `true` or `false`
|
|
--> $DIR/macros-nonfatal-errors.rs:121:5
|
|
|
|
|
LL | trace_macros!(invalid);
|
|
| ^^^^^^^^^^^^^^^^^^^^^^
|
|
|
|
error: default variant must be exhaustive
|
|
--> $DIR/macros-nonfatal-errors.rs:131:9
|
|
|
|
|
LL | #[non_exhaustive]
|
|
| ----------------- declared `#[non_exhaustive]` here
|
|
LL | Foo,
|
|
| ^^^
|
|
|
|
|
= help: consider a manual implementation of `Default`
|
|
|
|
error: cannot find macro `llvm_asm` in this scope
|
|
--> $DIR/macros-nonfatal-errors.rs:105:5
|
|
|
|
|
LL | llvm_asm!(invalid);
|
|
| ^^^^^^^^
|
|
|
|
error: aborting due to 28 previous errors
|
|
|
|
For more information about this error, try `rustc --explain E0665`.
|