diff options
Diffstat (limited to 'src/test/ui/object-lifetime/object-lifetime-default-mybox.rs')
-rw-r--r-- | src/test/ui/object-lifetime/object-lifetime-default-mybox.rs | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/src/test/ui/object-lifetime/object-lifetime-default-mybox.rs b/src/test/ui/object-lifetime/object-lifetime-default-mybox.rs new file mode 100644 index 000000000..5e6e5e2c0 --- /dev/null +++ b/src/test/ui/object-lifetime/object-lifetime-default-mybox.rs @@ -0,0 +1,37 @@ +// Test a "pass-through" object-lifetime-default that produces errors. + +#![allow(dead_code)] + +trait SomeTrait { + fn dummy(&self) { } +} + +struct MyBox<T:?Sized> { + r: Box<T> +} + +fn deref<T>(ss: &T) -> T { + // produces the type of a deref without worrying about whether a + // move out would actually be legal + loop { } +} + +fn load0(ss: &MyBox<dyn SomeTrait>) -> MyBox<dyn SomeTrait> { + deref(ss) +} + +fn load1<'a,'b>(a: &'a MyBox<dyn SomeTrait>, + b: &'b MyBox<dyn SomeTrait>) + -> &'b MyBox<dyn SomeTrait> +{ + a + //~^ ERROR lifetime may not live long enough +} + +fn load2<'a>(ss: &MyBox<dyn SomeTrait + 'a>) -> MyBox<dyn SomeTrait + 'a> { + load0(ss) + //~^ ERROR borrowed data escapes outside of function +} + +fn main() { +} |