diff options
Diffstat (limited to 'tests')
4 files changed, 71 insertions, 0 deletions
diff --git a/tests/rustdoc-ui/issue-110629-private-type-cycle-dyn.rs b/tests/rustdoc-ui/issue-110629-private-type-cycle-dyn.rs new file mode 100644 index 00000000000..c920a815fda --- /dev/null +++ b/tests/rustdoc-ui/issue-110629-private-type-cycle-dyn.rs @@ -0,0 +1,12 @@ +type Bar<'a, 'b> = Box<dyn PartialEq<Bar<'a, 'b>>>; +//~^ ERROR cycle detected when expanding type alias + +fn bar<'a, 'b>(i: &'a i32) -> Bar<'a, 'b> { + Box::new(i) +} + +fn main() { + let meh = 42; + let muh = 42; + assert!(bar(&meh) == bar(&muh)); +} diff --git a/tests/rustdoc-ui/issue-110629-private-type-cycle-dyn.stderr b/tests/rustdoc-ui/issue-110629-private-type-cycle-dyn.stderr new file mode 100644 index 00000000000..79e1b753112 --- /dev/null +++ b/tests/rustdoc-ui/issue-110629-private-type-cycle-dyn.stderr @@ -0,0 +1,25 @@ +error[E0391]: cycle detected when expanding type alias `Bar` + --> $DIR/issue-110629-private-type-cycle-dyn.rs:1:38 + | +LL | type Bar<'a, 'b> = Box<dyn PartialEq<Bar<'a, 'b>>>; + | ^^^^^^^^^^^ + | + = note: ...which immediately requires expanding type alias `Bar` again + = note: type aliases cannot be recursive + = help: consider using a struct, enum, or union instead to break the cycle + = help: see <https://doc.rust-lang.org/reference/types.html#recursive-types> for more information +note: cycle used when collecting item types in top-level module + --> $DIR/issue-110629-private-type-cycle-dyn.rs:1:1 + | +LL | / type Bar<'a, 'b> = Box<dyn PartialEq<Bar<'a, 'b>>>; +LL | | +LL | | +LL | | fn bar<'a, 'b>(i: &'a i32) -> Bar<'a, 'b> { +... | +LL | | assert!(bar(&meh) == bar(&muh)); +LL | | } + | |_^ + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0391`. diff --git a/tests/rustdoc-ui/issue-110629-private-type-cycle.rs b/tests/rustdoc-ui/issue-110629-private-type-cycle.rs new file mode 100644 index 00000000000..2d46ddbfa6e --- /dev/null +++ b/tests/rustdoc-ui/issue-110629-private-type-cycle.rs @@ -0,0 +1,15 @@ +// check-pass + +#![feature(type_alias_impl_trait)] + +type Bar<'a, 'b> = impl PartialEq<Bar<'a, 'b>> + std::fmt::Debug; + +fn bar<'a, 'b>(i: &'a i32) -> Bar<'a, 'b> { + i +} + +fn main() { + let meh = 42; + let muh = 42; + assert_eq!(bar(&meh), bar(&muh)); +} diff --git a/tests/rustdoc/issue-110629-private-type-cycle.rs b/tests/rustdoc/issue-110629-private-type-cycle.rs new file mode 100644 index 00000000000..a4efbb098f7 --- /dev/null +++ b/tests/rustdoc/issue-110629-private-type-cycle.rs @@ -0,0 +1,19 @@ +// compile-flags: --document-private-items + +#![feature(type_alias_impl_trait)] + +type Bar<'a, 'b> = impl PartialEq<Bar<'a, 'b>> + std::fmt::Debug; + +// @has issue_110629_private_type_cycle/type.Bar.html +// @has - '//pre[@class="rust item-decl"]' \ +// "pub(crate) type Bar<'a, 'b> = impl PartialEq<Bar<'a, 'b>> + Debug;" + +fn bar<'a, 'b>(i: &'a i32) -> Bar<'a, 'b> { + i +} + +fn main() { + let meh = 42; + let muh = 42; + assert_eq!(bar(&meh), bar(&muh)); +} |