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// Test that the types of distinct fn items are not compatible by
// default. See also `run-pass/fn-item-type-*.rs`.
fn foo<T>(x: isize) -> isize { x * 2 }
fn bar<T>(x: isize) -> isize { x * 4 }
fn eq<T>(x: T, y: T) { }
trait Foo { fn foo() { /* this is a default fn */ } }
impl<T> Foo for T { /* `foo` is still default here */ }
fn main() {
eq(foo::<u8>, bar::<u8>);
//~^ ERROR mismatched types
//~| expected fn item `fn(_) -> _ {foo::<u8>}`
//~| found fn item `fn(_) -> _ {bar::<u8>}`
//~| expected fn item, found a different fn item
//~| different `fn` items always have unique types, even if their signatures are the same
//~| change the expected type to be function pointer
//~| if the expected type is due to type inference, cast the expected `fn` to a function pointer
eq(foo::<u8>, foo::<i8>);
//~^ ERROR mismatched types
//~| expected `u8`, found `i8`
//~| different `fn` items always have unique types, even if their signatures are the same
//~| change the expected type to be function pointer
//~| if the expected type is due to type inference, cast the expected `fn` to a function pointer
eq(bar::<String>, bar::<Vec<u8>>);
//~^ ERROR mismatched types
//~| found fn item `fn(_) -> _ {bar::<Vec<u8>>}`
//~| expected struct `String`, found struct `Vec`
//~| different `fn` items always have unique types, even if their signatures are the same
//~| change the expected type to be function pointer
//~| if the expected type is due to type inference, cast the expected `fn` to a function pointer
// Make sure we distinguish between trait methods correctly.
eq(<u8 as Foo>::foo, <u16 as Foo>::foo);
//~^ ERROR mismatched types
//~| expected `u8`, found `u16`
//~| different `fn` items always have unique types, even if their signatures are the same
//~| change the expected type to be function pointer
//~| if the expected type is due to type inference, cast the expected `fn` to a function pointer
eq(foo::<u8>, bar::<u8> as fn(isize) -> isize);
//~^ ERROR mismatched types
//~| found fn pointer `fn(_) -> _`
//~| expected fn item, found fn pointer
//~| change the expected type to be function pointer
//~| if the expected type is due to type inference, cast the expected `fn` to a function pointer
eq(foo::<u8> as fn(isize) -> isize, bar::<u8>); // ok!
}
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