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rust/tests/ui/diagnostic-width/long-E0308.rs

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new unstable option: -Zwrite-long-types-to-disk This option guards the logic of writing long type names in files and instead using short forms in error messages in rustc_middle/ty/error behind a flag. The main motivation for this change is to disable this behaviour when running ui tests. This logic can be triggered by running tests in a directory that has a long enough path, e.g. /my/very-long-path/where/rust-codebase/exists/ This means ui tests can fail depending on how long the path to their file is. Some ui tests actually rely on this behaviour for their assertions, so for those we enable the flag manually.
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// compile-flags: --diagnostic-width=60 -Zwrite-long-types-to-disk=yes
Detect long types in E0308 and write them to disk On type error with long types, print an abridged type and write the full type to disk. Print the widest possible short type while still fitting in the terminal.
2022-11-25 19:14:25 -06:00
// normalize-stderr-test: "long-type-\d+" -> "long-type-hash"
Introduce `with_forced_trimmed_paths`
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mod a {
// Force the "short path for unique types" machinery to trip up
pub struct Atype;
pub struct Btype;
pub struct Ctype;
}
mod b {
pub struct Atype<T, K>(T, K);
pub struct Btype<T, K>(T, K);
pub struct Ctype<T, K>(T, K);
}
use b::*;
Detect long types in E0308 and write them to disk On type error with long types, print an abridged type and write the full type to disk. Print the widest possible short type while still fitting in the terminal.
2022-11-25 19:14:25 -06:00
fn main() {
let x: Atype<
Btype<
Ctype<
Atype<
Btype<
Ctype<
Atype<
Btype<
Ctype<i32, i32>,
i32
>,
i32
>,
i32
>,
i32
>,
i32
>,
i32
>,
i32
>,
i32
> = Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(
Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(
Ok("")
))))))))))))))))))))))))))))))
))))))))))))))))))))))))))))));
//~^^^^^ ERROR E0308
let _ = Some(Ok(Some(Some(Some(Some(Some(Some(Some(Some(Some(Some(Some(Some(Some(Some(Some(
Some(Some(Some(Some(Some(Some(Some(Some(Some(Some(Some(Some(Some(Some(Some(Some(Some(Some(
Some(Some(Some(Some(Some(Some(Some(Some(Some(Some(Some(Some(Some(Some(Some(Some(Some(
Some(Some(Some(Some(Some(Some(Some(Some(Some("")))))))))
)))))))))))))))))
))))))))))))))))))
))))))))))))))))) == Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(
Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(
Ok(Ok(Ok(Ok(Ok(Ok(Ok("")))))))
))))))))))))))))))))))))))))))
))))))))))))))))))))))));
//~^^^^^ ERROR E0308
let x: Atype<
Btype<
Ctype<
Atype<
Btype<
Ctype<
Atype<
Btype<
Ctype<i32, i32>,
i32
>,
i32
>,
i32
>,
i32
>,
i32
>,
i32
>,
i32
>,
i32
> = ();
//~^ ERROR E0308
let _: () = Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(
Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(Ok(
Ok(Ok(Ok(Ok(Ok(Ok(Ok("")))))))
))))))))))))))))))))))))))))))
))))))))))))))))))))))));
//~^^^^^ ERROR E0308
}
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