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[macro_metavar_expr] Add tests to ensure the feature requirement #95764

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merged 1 commit into from Apr 9, 2022
Merged

[macro_metavar_expr] Add tests to ensure the feature requirement #95764

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35 changes: 35 additions & 0 deletions src/test/ui/macros/rfc-3086-metavar-expr/required-feature.rs
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Expand Up @@ -5,5 +5,40 @@ macro_rules! count {
};
}

macro_rules! dollar_dollar {
() => {
macro_rules! bar {
( $$( $$any:tt )* ) => { $$( $$any )* };
//~^ ERROR meta-variable expressions are unstable
//~| ERROR meta-variable expressions are unstable
//~| ERROR meta-variable expressions are unstable
//~| ERROR meta-variable expressions are unstable
}
};
}

macro_rules! index {
( $( $e:stmt ),* ) => {
$( ${ignore(e)} ${index()} )*
//~^ ERROR meta-variable expressions are unstable
//~| ERROR meta-variable expressions are unstable
};
}

macro_rules! ignore {
( $( $i:stmt ),* ) => {{
0 $( + 1 ${ignore(i)} )*
//~^ ERROR meta-variable expressions are unstable
}};
}

macro_rules! length {
( $( $e:stmt ),* ) => {
$( ${ignore(e)} ${length()} )*
//~^ ERROR meta-variable expressions are unstable
//~| ERROR meta-variable expressions are unstable
};
}

fn main() {
}
83 changes: 82 additions & 1 deletion src/test/ui/macros/rfc-3086-metavar-expr/required-feature.stderr
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Expand Up @@ -7,6 +7,87 @@ LL | ${ count(e) }
= note: see issue #83527 <https://github.com/rust-lang/rust/issues/83527> for more information
= help: add `#![feature(macro_metavar_expr)]` to the crate attributes to enable

error: aborting due to previous error
error[E0658]: meta-variable expressions are unstable
--> $DIR/required-feature.rs:11:16
|
LL | ( $$( $$any:tt )* ) => { $$( $$any )* };
| ^
|
= note: see issue #83527 <https://github.com/rust-lang/rust/issues/83527> for more information
= help: add `#![feature(macro_metavar_expr)]` to the crate attributes to enable

error[E0658]: meta-variable expressions are unstable
--> $DIR/required-feature.rs:11:20
|
LL | ( $$( $$any:tt )* ) => { $$( $$any )* };
| ^
|
= note: see issue #83527 <https://github.com/rust-lang/rust/issues/83527> for more information
= help: add `#![feature(macro_metavar_expr)]` to the crate attributes to enable

error[E0658]: meta-variable expressions are unstable
--> $DIR/required-feature.rs:11:39
|
LL | ( $$( $$any:tt )* ) => { $$( $$any )* };
| ^
|
= note: see issue #83527 <https://github.com/rust-lang/rust/issues/83527> for more information
= help: add `#![feature(macro_metavar_expr)]` to the crate attributes to enable

error[E0658]: meta-variable expressions are unstable
--> $DIR/required-feature.rs:11:43
|
LL | ( $$( $$any:tt )* ) => { $$( $$any )* };
| ^
|
= note: see issue #83527 <https://github.com/rust-lang/rust/issues/83527> for more information
= help: add `#![feature(macro_metavar_expr)]` to the crate attributes to enable

error[E0658]: meta-variable expressions are unstable
--> $DIR/required-feature.rs:22:13
|
LL | $( ${ignore(e)} ${index()} )*
| ^^^^^^^^^^^
|
= note: see issue #83527 <https://github.com/rust-lang/rust/issues/83527> for more information
= help: add `#![feature(macro_metavar_expr)]` to the crate attributes to enable

error[E0658]: meta-variable expressions are unstable
--> $DIR/required-feature.rs:22:26
|
LL | $( ${ignore(e)} ${index()} )*
| ^^^^^^^^^
|
= note: see issue #83527 <https://github.com/rust-lang/rust/issues/83527> for more information
= help: add `#![feature(macro_metavar_expr)]` to the crate attributes to enable

error[E0658]: meta-variable expressions are unstable
--> $DIR/required-feature.rs:30:19
|
LL | 0 $( + 1 ${ignore(i)} )*
| ^^^^^^^^^^^
|
= note: see issue #83527 <https://github.com/rust-lang/rust/issues/83527> for more information
= help: add `#![feature(macro_metavar_expr)]` to the crate attributes to enable

error[E0658]: meta-variable expressions are unstable
--> $DIR/required-feature.rs:37:13
|
LL | $( ${ignore(e)} ${length()} )*
| ^^^^^^^^^^^
|
= note: see issue #83527 <https://github.com/rust-lang/rust/issues/83527> for more information
= help: add `#![feature(macro_metavar_expr)]` to the crate attributes to enable

error[E0658]: meta-variable expressions are unstable
--> $DIR/required-feature.rs:37:26
|
LL | $( ${ignore(e)} ${length()} )*
| ^^^^^^^^^^
|
= note: see issue #83527 <https://github.com/rust-lang/rust/issues/83527> for more information
= help: add `#![feature(macro_metavar_expr)]` to the crate attributes to enable

error: aborting due to 10 previous errors

For more information about this error, try `rustc --explain E0658`.