diff options
Diffstat (limited to 'src/test/ui/traits/inheritance/call-bound-inherited.rs')
-rw-r--r-- | src/test/ui/traits/inheritance/call-bound-inherited.rs | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/src/test/ui/traits/inheritance/call-bound-inherited.rs b/src/test/ui/traits/inheritance/call-bound-inherited.rs new file mode 100644 index 000000000..37c2ff63c --- /dev/null +++ b/src/test/ui/traits/inheritance/call-bound-inherited.rs @@ -0,0 +1,20 @@ +// run-pass +#![allow(dead_code)] + +trait Foo { fn f(&self) -> isize; } +trait Bar : Foo { fn g(&self) -> isize; } + +struct A { x: isize } + +impl Foo for A { fn f(&self) -> isize { 10 } } +impl Bar for A { fn g(&self) -> isize { 20 } } + +// Call a function on Foo, given a T: Bar +fn gg<T:Bar>(a: &T) -> isize { + a.f() +} + +pub fn main() { + let a = &A { x: 3 }; + assert_eq!(gg(a), 10); +} |