rust/tests/ui/shadowed/shadowed-lifetime.rs

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// Test that shadowed lifetimes generate an error.
struct Foo<'a>(&'a isize);
impl<'a> Foo<'a> {
fn shadow_in_method<'a>(&'a self) -> &'a isize {
//~^ ERROR lifetime name `'a` shadows a lifetime name that is already in scope
self.0
}
fn shadow_in_type<'b>(&'b self) -> &'b isize {
let x: for<'b> fn(&'b isize) = panic!();
//~^ ERROR lifetime name `'b` shadows a lifetime name that is already in scope
self.0
}
fn not_shadow_in_item<'b>(&'b self) {
struct Bar<'a, 'b>(&'a isize, &'b isize); // not a shadow, separate item
fn foo<'a, 'b>(x: &'a isize, y: &'b isize) { } // same
}
}
fn main() {
}