diff options
Diffstat (limited to 'src/test/ui/where-clauses/where-clauses-method-unsatisfied.rs')
-rw-r--r-- | src/test/ui/where-clauses/where-clauses-method-unsatisfied.rs | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/src/test/ui/where-clauses/where-clauses-method-unsatisfied.rs b/src/test/ui/where-clauses/where-clauses-method-unsatisfied.rs new file mode 100644 index 000000000..a8ae02964 --- /dev/null +++ b/src/test/ui/where-clauses/where-clauses-method-unsatisfied.rs @@ -0,0 +1,20 @@ +// Test that a where clause attached to a method allows us to add +// additional constraints to a parameter out of scope. + +struct Foo<T> { + value: T +} + +struct Bar; // does not implement Eq + +impl<T> Foo<T> { + fn equals(&self, u: &Foo<T>) -> bool where T : Eq { + self.value == u.value + } +} + +fn main() { + let x = Foo { value: Bar }; + x.equals(&x); + //~^ ERROR `Bar: Eq` is not satisfied +} |