rust/src/test/ui/object-does-not-impl-trait.rs

// Test that an object type `Box<Foo>` is not considered to implement the
// trait `Foo`. Issue #5087.

trait Foo {}
fn take_foo<F:Foo>(f: F) {}
fn take_object(f: Box<Foo>) { take_foo(f); }
//~^ ERROR `std::boxed::Box<dyn Foo>: Foo` is not satisfied
fn main() {}
librustc: Remove `~EXPR`, `~TYPE`, and `~PAT` from the language, except for `~str`/`~[]`. Note that `~self` still remains, since I forgot to add support for `Box<self>` before the snapshot. How to update your code: * Instead of `~EXPR`, you should write `box EXPR`. * Instead of `~TYPE`, you should write `Box<Type>`. * Instead of `~PATTERN`, you should write `box PATTERN`. [breaking-change] 2014-05-05 18:56:44 -07:00			// Test that an object type `Box<Foo>` is not considered to implement the
Make object types not implement associated trait. Fixes #5087. 2013-03-05 17:49:50 -05:00			// trait `Foo`. Issue #5087.
Refactor trans to replace lvalue and friends with Datum. Also: - report illegal move/ref combos whether or not ref comes first - commented out fix for #3387, too restrictive and causes an ICE 2012-08-28 15:54:45 -07:00
test: Fix fallout in tests 2015-04-17 22:12:20 -07:00			`trait Foo {}`
Make object types not implement associated trait. Fixes #5087. 2013-03-05 17:49:50 -05:00			`fn take_foo<F:Foo>(f: F) {}`
Update error messages in compile-fail tests 2014-09-12 10:45:39 -04:00			`fn take_object(f: Box<Foo>) { take_foo(f); }`
add `dyn` to display of dynamic (trait) type names The `dyn Trait` syntax was stabilized in 199ee327. Resolves #49277. 2018-05-26 20:51:50 -07:00			//~^ ERROR `std::boxed::Box<dyn Foo>: Foo` is not satisfied
Make object types not implement associated trait. Fixes #5087. 2013-03-05 17:49:50 -05:00			`fn main() {}`