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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
commit | 698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch) | |
tree | 173a775858bd501c378080a10dca74132f05bc50 /src/test/ui/traits/elaborate-type-region.rs | |
parent | Initial commit. (diff) | |
download | rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip |
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/test/ui/traits/elaborate-type-region.rs | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/src/test/ui/traits/elaborate-type-region.rs b/src/test/ui/traits/elaborate-type-region.rs new file mode 100644 index 000000000..03aef0184 --- /dev/null +++ b/src/test/ui/traits/elaborate-type-region.rs @@ -0,0 +1,49 @@ +// run-pass +#![allow(dead_code)] + +// Test that we elaborate `Type: 'region` constraints and infer various important things. + +trait Master<'a, T: ?Sized> { + fn foo() where T: 'a; +} + +// [U]: 'a => U: 'a +impl<'a, U> Master<'a, [U]> for () { + fn foo() where U: 'a { } +} + +// &'b U: 'a => 'b: 'a, U: 'a +impl<'a, 'b, U> Master<'a, &'b U> for () { + fn foo() where 'b: 'a, U: 'a { } +} + +// &'b [U]: 'a => 'b: 'a, U: 'a +impl<'a, 'b, U> Master<'a, &'b [U]> for () { + fn foo() where 'b: 'a, U: 'a { } +} + +// Foo<'b>: 'a => 'b: 'a +struct Foo<'a> { x: &'a () } +impl<'a, 'b> Master<'a, Foo<'b>> for () { + fn foo() where 'b: 'a { } +} + +// Bar<'b, T>: 'a => 'b: 'a, T: 'a +struct Bar<'a, T: 'a> { x: &'a T } +impl<'a, 'b, T> Master<'a, Bar<'b, T>> for () { + fn foo() where 'b: 'a, T: 'a { } +} + +// fn(T): 'a => T: 'a +impl<'a, T> Master<'a, fn(T)> for () { + fn foo() where T: 'a { } +} + +// fn() -> T: 'a => T: 'a +impl<'a, T> Master<'a, fn() -> T> for () { + fn foo() where T: 'a { } +} + +fn main() { + println!("Hello, world!"); +} |