diff options
Diffstat (limited to 'compiler')
| -rw-r--r-- | compiler/rustc_lint/src/context.rs | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/compiler/rustc_lint/src/context.rs b/compiler/rustc_lint/src/context.rs index 414f2a1846b..297b8ef7e76 100644 --- a/compiler/rustc_lint/src/context.rs +++ b/compiler/rustc_lint/src/context.rs @@ -711,6 +711,15 @@ impl<'tcx> LateContext<'tcx> { /// Gets the absolute path of `def_id` as a vector of `Symbol`. /// + /// Note that this is kinda expensive because it has to + /// travel the tree and pretty-print. Use sparingly. + /// + /// If you're trying to match for an item given by its path, use a + /// diagnostic item. If you're only interested in given sections, use more + /// specific functions, such as [`TyCtxt::crate_name`] + /// + /// FIXME: It would be great if this could be optimized. + /// /// # Examples /// /// ```rust,ignore (no context or def id available) |