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Diffstat (limited to '')
-rw-r--r-- | tests/ui/lifetimes/issue-103582-hint-for-missing-lifetime-bound-on-trait-object-using-type-alias.rs | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/tests/ui/lifetimes/issue-103582-hint-for-missing-lifetime-bound-on-trait-object-using-type-alias.rs b/tests/ui/lifetimes/issue-103582-hint-for-missing-lifetime-bound-on-trait-object-using-type-alias.rs new file mode 100644 index 000000000..20c88ec69 --- /dev/null +++ b/tests/ui/lifetimes/issue-103582-hint-for-missing-lifetime-bound-on-trait-object-using-type-alias.rs @@ -0,0 +1,45 @@ +// run-rustfix + +trait Greeter0 { + fn greet(&self); +} + +trait Greeter1 { + fn greet(&self); +} + +type BoxedGreeter = (Box<dyn Greeter0>, Box<dyn Greeter1>); +//~^ HELP to declare that the trait object captures data from argument `self`, you can add a lifetime parameter `'a` in the type alias + +struct FixedGreeter<'a>(pub &'a str); + +impl Greeter0 for FixedGreeter<'_> { + fn greet(&self) { + println!("0 {}", self.0) + } +} + +impl Greeter1 for FixedGreeter<'_> { + fn greet(&self) { + println!("1 {}", self.0) + } +} + +struct Greetings(pub Vec<String>); + +impl Greetings { + pub fn get(&self, i: usize) -> BoxedGreeter { + (Box::new(FixedGreeter(&self.0[i])), Box::new(FixedGreeter(&self.0[i]))) + //~^ ERROR lifetime may not live long enough + } +} + +fn main() { + let mut g = Greetings {0 : vec!()}; + g.0.push("a".to_string()); + g.0.push("b".to_string()); + g.get(0).0.greet(); + g.get(0).1.greet(); + g.get(1).0.greet(); + g.get(1).1.greet(); +} |