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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:13 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:19:13 +0000 |
commit | 218caa410aa38c29984be31a5229b9fa717560ee (patch) | |
tree | c54bd55eeb6e4c508940a30e94c0032fbd45d677 /tests/ui/self/where-for-self.rs | |
parent | Releasing progress-linux version 1.67.1+dfsg1-1~progress7.99u1. (diff) | |
download | rustc-218caa410aa38c29984be31a5229b9fa717560ee.tar.xz rustc-218caa410aa38c29984be31a5229b9fa717560ee.zip |
Merging upstream version 1.68.2+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tests/ui/self/where-for-self.rs')
-rw-r--r-- | tests/ui/self/where-for-self.rs | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/tests/ui/self/where-for-self.rs b/tests/ui/self/where-for-self.rs new file mode 100644 index 000000000..76c592dc4 --- /dev/null +++ b/tests/ui/self/where-for-self.rs @@ -0,0 +1,51 @@ +// run-pass +// Test that we can quantify lifetimes outside a constraint (i.e., including +// the self type) in a where clause. + + +static mut COUNT: u32 = 1; + +trait Bar<'a> { + fn bar(&self); +} + +trait Baz<'a> +{ + fn baz(&self); +} + +impl<'a, 'b> Bar<'b> for &'a u32 { + fn bar(&self) { + unsafe { COUNT *= 2; } + } +} + +impl<'a, 'b> Baz<'b> for &'a u32 { + fn baz(&self) { + unsafe { COUNT *= 3; } + } +} + +// Test we can use the syntax for HRL including the self type. +fn foo1<T>(x: &T) + where for<'a, 'b> &'a T: Bar<'b> +{ + x.bar() +} + +// Test we can quantify multiple bounds (i.e., the precedence is sensible). +fn foo2<T>(x: &T) + where for<'a, 'b> &'a T: Bar<'b> + Baz<'b> +{ + x.baz(); + x.bar() +} + +fn main() { + let x = 42; + foo1(&x); + foo2(&x); + unsafe { + assert_eq!(COUNT, 12); + } +} |