| // Issue #14061: tests the interaction between generic implementation |
| // parameter bounds and trait objects. |
| |
| #![feature(box_syntax)] |
| |
| use std::marker; |
| |
| struct S<T>(marker::PhantomData<T>); |
| |
| trait Gettable<T> { |
| fn get(&self) -> T { panic!() } |
| } |
| |
| impl<T: Send + Copy + 'static> Gettable<T> for S<T> {} |
| |
| fn f<T>(val: T) { |
| let t: S<T> = S(marker::PhantomData); |
| let a = &t as &dyn Gettable<T>; |
| //~^ ERROR `T` cannot be sent between threads safely |
| //~| ERROR : std::marker::Copy` is not satisfied |
| } |
| |
| fn g<T>(val: T) { |
| let t: S<T> = S(marker::PhantomData); |
| let a: &dyn Gettable<T> = &t; |
| //~^ ERROR `T` cannot be sent between threads safely |
| //~| ERROR : std::marker::Copy` is not satisfied |
| } |
| |
| fn foo<'a>() { |
| let t: S<&'a isize> = S(marker::PhantomData); |
| let a = &t as &dyn Gettable<&'a isize>; |
| //~^ ERROR does not fulfill |
| } |
| |
| fn foo2<'a>() { |
| let t: Box<S<String>> = box S(marker::PhantomData); |
| let a = t as Box<dyn Gettable<String>>; |
| //~^ ERROR : std::marker::Copy` is not satisfied |
| } |
| |
| fn foo3<'a>() { |
| struct Foo; // does not impl Copy |
| |
| let t: Box<S<Foo>> = box S(marker::PhantomData); |
| let a: Box<dyn Gettable<Foo>> = t; |
| //~^ ERROR : std::marker::Copy` is not satisfied |
| } |
| |
| fn main() { } |