diff options
Diffstat (limited to 'src/test/ui/mir/important-higher-ranked-regions.rs')
-rw-r--r-- | src/test/ui/mir/important-higher-ranked-regions.rs | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/src/test/ui/mir/important-higher-ranked-regions.rs b/src/test/ui/mir/important-higher-ranked-regions.rs new file mode 100644 index 000000000..cadfb3b66 --- /dev/null +++ b/src/test/ui/mir/important-higher-ranked-regions.rs @@ -0,0 +1,26 @@ +// check-pass +// compile-flags: -Zvalidate-mir + +// This test checks that bivariant parameters are handled correctly +// in the mir. +#![allow(coherence_leak_check)] +trait Trait { + type Assoc; +} + +struct Foo<T, U>(T) +where + T: Trait<Assoc = U>; + +impl Trait for for<'a> fn(&'a ()) { + type Assoc = u32; +} +impl Trait for fn(&'static ()) { + type Assoc = String; +} + +fn foo(x: Foo<for<'a> fn(&'a ()), u32>) -> Foo<fn(&'static ()), String> { + x +} + +fn main() {} |