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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:18:32 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:18:32 +0000 |
commit | 4547b622d8d29df964fa2914213088b148c498fc (patch) | |
tree | 9fc6b25f3c3add6b745be9a2400a6e96140046e9 /src/test/ui/sized | |
parent | Releasing progress-linux version 1.66.0+dfsg1-1~progress7.99u1. (diff) | |
download | rustc-4547b622d8d29df964fa2914213088b148c498fc.tar.xz rustc-4547b622d8d29df964fa2914213088b148c498fc.zip |
Merging upstream version 1.67.1+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/test/ui/sized')
-rw-r--r-- | src/test/ui/sized/coinductive-1-gat.rs | 14 | ||||
-rw-r--r-- | src/test/ui/sized/coinductive-1.rs | 14 | ||||
-rw-r--r-- | src/test/ui/sized/coinductive-2.rs | 28 | ||||
-rw-r--r-- | src/test/ui/sized/recursive-type-1.rs | 10 | ||||
-rw-r--r-- | src/test/ui/sized/recursive-type-2.rs | 13 | ||||
-rw-r--r-- | src/test/ui/sized/recursive-type-2.stderr | 13 |
6 files changed, 92 insertions, 0 deletions
diff --git a/src/test/ui/sized/coinductive-1-gat.rs b/src/test/ui/sized/coinductive-1-gat.rs new file mode 100644 index 000000000..cdf70920f --- /dev/null +++ b/src/test/ui/sized/coinductive-1-gat.rs @@ -0,0 +1,14 @@ +// check-pass +struct Node<C: Trait>(C::Assoc::<Self>); + +trait Trait { + type Assoc<T>; +} + +impl Trait for Vec<()> { + type Assoc<T> = Vec<T>; +} + +fn main() { + let _ = Node::<Vec<()>>(Vec::new()); +} diff --git a/src/test/ui/sized/coinductive-1.rs b/src/test/ui/sized/coinductive-1.rs new file mode 100644 index 000000000..7bcd0f1fd --- /dev/null +++ b/src/test/ui/sized/coinductive-1.rs @@ -0,0 +1,14 @@ +// check-pass +struct Node<C: Trait<Self>>(C::Assoc); + +trait Trait<T> { + type Assoc; +} + +impl<T> Trait<T> for Vec<()> { + type Assoc = Vec<T>; +} + +fn main() { + let _ = Node::<Vec<()>>(Vec::new()); +} diff --git a/src/test/ui/sized/coinductive-2.rs b/src/test/ui/sized/coinductive-2.rs new file mode 100644 index 000000000..212274d2e --- /dev/null +++ b/src/test/ui/sized/coinductive-2.rs @@ -0,0 +1,28 @@ +// run-pass +struct Node<C: CollectionFactory<Self>> { + _children: C::Collection, +} + +trait CollectionFactory<T> { + type Collection; +} + +impl<T> CollectionFactory<T> for Vec<()> { + type Collection = Vec<T>; +} + +trait Collection<T>: Sized { + fn push(&mut self, v: T); +} + +impl<T> Collection<T> for Vec<T> { + fn push(&mut self, v: T) { + self.push(v) + } +} + +fn main() { + let _ = Node::<Vec<()>> { + _children: Vec::new(), + }; +} diff --git a/src/test/ui/sized/recursive-type-1.rs b/src/test/ui/sized/recursive-type-1.rs new file mode 100644 index 000000000..cd6805967 --- /dev/null +++ b/src/test/ui/sized/recursive-type-1.rs @@ -0,0 +1,10 @@ +// check-pass +trait A { type Assoc; } + +impl A for () { + // FIXME: it would be nice for this to at least cause a warning. + type Assoc = Foo<()>; +} +struct Foo<T: A>(T::Assoc); + +fn main() {} diff --git a/src/test/ui/sized/recursive-type-2.rs b/src/test/ui/sized/recursive-type-2.rs new file mode 100644 index 000000000..7d95417a6 --- /dev/null +++ b/src/test/ui/sized/recursive-type-2.rs @@ -0,0 +1,13 @@ +// build-fail +//~^ ERROR cycle detected when computing layout of `Foo<()>` + +trait A { type Assoc: ?Sized; } + +impl A for () { + type Assoc = Foo<()>; +} +struct Foo<T: A>(T::Assoc); + +fn main() { + let x: Foo<()>; +} diff --git a/src/test/ui/sized/recursive-type-2.stderr b/src/test/ui/sized/recursive-type-2.stderr new file mode 100644 index 000000000..d0e6e9db0 --- /dev/null +++ b/src/test/ui/sized/recursive-type-2.stderr @@ -0,0 +1,13 @@ +error[E0391]: cycle detected when computing layout of `Foo<()>` + | + = note: ...which requires computing layout of `<() as A>::Assoc`... + = note: ...which again requires computing layout of `Foo<()>`, completing the cycle +note: cycle used when elaborating drops for `main` + --> $DIR/recursive-type-2.rs:11:1 + | +LL | fn main() { + | ^^^^^^^^^ + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0391`. |