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Add a warning to LateContext::get_def_path #142593

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Jun 22, 2025
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Add a warning to LateContext::get_def_path #142593

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9 changes: 9 additions & 0 deletions compiler/rustc_lint/src/context.rs
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Expand Up @@ -710,6 +710,15 @@ 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
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/// Note that this is kinda expensive because it has to
///
/// 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)
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