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| author | Georg Semmler <github@weiznich.de> | 2024-07-11 08:14:28 +0200 |
|---|---|---|
| committer | Georg Semmler <github@weiznich.de> | 2024-07-11 08:14:28 +0200 |
| commit | 27d5db166e8e640ab8317cc96b91ffe60270b6c5 (patch) | |
| tree | ca0ccf75ff5166b601d31cd34328db15e00de441 /tests | |
| parent | e1f45a1442bb373429b6b0838e8ef806ddddfeef (diff) | |
| download | rust-27d5db166e8e640ab8317cc96b91ffe60270b6c5.tar.gz rust-27d5db166e8e640ab8317cc96b91ffe60270b6c5.zip | |
Allows `#[diagnostic::do_not_recommend]` to supress trait impls in suggestions as well
This commit changes the error reporting mechanism for not implemented
traits to skip impl marked as `#[diagnostic::do_not_recommend]` in the
help part of the error message ("the following other types implement
trait `Foo`:"). The main use case here is to allow crate authors to skip
non-meaningful confusing suggestions. A common example for this are
fully generic impls on tuples.
Diffstat (limited to 'tests')
3 files changed, 61 insertions, 0 deletions
diff --git a/tests/ui/diagnostic_namespace/do_not_recommend/supress_suggestions_in_help.current.stderr b/tests/ui/diagnostic_namespace/do_not_recommend/supress_suggestions_in_help.current.stderr new file mode 100644 index 00000000000..629fc59361d --- /dev/null +++ b/tests/ui/diagnostic_namespace/do_not_recommend/supress_suggestions_in_help.current.stderr @@ -0,0 +1,18 @@ +error[E0277]: the trait bound `(): Foo` is not satisfied + --> $DIR/supress_suggestions_in_help.rs:23:11 + | +LL | check(()); + | ----- ^^ the trait `Foo` is not implemented for `()` + | | + | required by a bound introduced by this call + | + = help: the trait `Foo` is implemented for `i32` +note: required by a bound in `check` + --> $DIR/supress_suggestions_in_help.rs:20:18 + | +LL | fn check(a: impl Foo) {} + | ^^^ required by this bound in `check` + +error: aborting due to 1 previous error + +For more information about this error, try `rustc --explain E0277`. diff --git a/tests/ui/diagnostic_namespace/do_not_recommend/supress_suggestions_in_help.next.stderr b/tests/ui/diagnostic_namespace/do_not_recommend/supress_suggestions_in_help.next.stderr new file mode 100644 index 00000000000..629fc59361d --- /dev/null +++ b/tests/ui/diagnostic_namespace/do_not_recommend/supress_suggestions_in_help.next.stderr @@ -0,0 +1,18 @@ +error[E0277]: the trait bound `(): Foo` is not satisfied + --> $DIR/supress_suggestions_in_help.rs:23:11 + | +LL | check(()); + | ----- ^^ the trait `Foo` is not implemented for `()` + | | + | required by a bound introduced by this call + | + = help: the trait `Foo` is implemented for `i32` +note: required by a bound in `check` + --> $DIR/supress_suggestions_in_help.rs:20:18 + | +LL | fn check(a: impl Foo) {} + | ^^^ required by this bound in `check` + +error: aborting due to 1 previous error + +For more information about this error, try `rustc --explain E0277`. diff --git a/tests/ui/diagnostic_namespace/do_not_recommend/supress_suggestions_in_help.rs b/tests/ui/diagnostic_namespace/do_not_recommend/supress_suggestions_in_help.rs new file mode 100644 index 00000000000..ef6f255c351 --- /dev/null +++ b/tests/ui/diagnostic_namespace/do_not_recommend/supress_suggestions_in_help.rs @@ -0,0 +1,25 @@ +//@ revisions: current next +//@ ignore-compare-mode-next-solver (explicit revisions) +//@[next] compile-flags: -Znext-solver + +#![feature(do_not_recommend)] + +trait Foo {} + +#[diagnostic::do_not_recommend] +impl<A> Foo for (A,) {} + +#[diagnostic::do_not_recommend] +impl<A, B> Foo for (A, B) {} + +#[diagnostic::do_not_recommend] +impl<A, B, C> Foo for (A, B, C) {} + +impl Foo for i32 {} + +fn check(a: impl Foo) {} + +fn main() { + check(()); + //~^ ERROR the trait bound `(): Foo` is not satisfied +} |