query is_late_bound_map(_: LocalDefId) -> Option<&'tcx FxIndexSet<LocalDefId>> {
desc { "testing if a region is late bound" }
}
- /// For a given item (like a struct), gets the default lifetimes to be used
+ /// For a given item's generic parameter, gets the default lifetimes to be used
/// for each parameter if a trait object were to be passed for that parameter.
- /// For example, for `struct Foo<'a, T, U>`, this would be `['static, 'static]`.
- /// For `struct Foo<'a, T: 'a, U>`, this would instead be `['a, 'static]`.
- query object_lifetime_default(key: DefId) -> Option<ObjectLifetimeDefault> {
- desc { "looking up lifetime defaults for generic parameter `{:?}`", key }
+ /// For example, for `T` in `struct Foo<'a, T>`, this would be `'static`.
+ /// For `T` in `struct Foo<'a, T: 'a>`, this would instead be `'a`.
+ /// This query will panic if passed something that is not a type parameter.
+ query object_lifetime_default(key: DefId) -> ObjectLifetimeDefault {
+ desc { "looking up lifetime defaults for generic parameter `{}`", tcx.def_path_str(key) }
separate_provide_extern
}
query late_bound_vars_map(_: LocalDefId)