pub struct ClashingExternDeclarations {
    seen_decls: FxHashMap<Symbol, HirId>,


seen_decls: FxHashMap<Symbol, HirId>

Map of function symbol name to the first-seen hir id for that symbol name.. If seen_decls contains an entry for key K, it means a symbol with name K has been seen by this lint and the symbol should be reported as a clashing declaration.


Insert a new foreign item into the seen set. If a symbol with the same name already exists for the item, return its HirId without updating the set.

Get the name of the symbol that’s linked against for a given extern declaration. That is, the name specified in a #[link_name = …] attribute if one was specified, else, just the symbol’s name.

Checks whether two types are structurally the same enough that the declarations shouldn’t clash. We need this so we don’t emit a lint when two modules both declare an extern struct, with the same members (as the declarations shouldn’t clash).

Trait Implementations


fn check_body_post(&mut self, _: &LateContext<'tcx>, _: &'tcx Body<'tcx>)


fn check_crate_post(&mut self, _: &LateContext<'tcx>)


fn check_item_post(&mut self, _: &LateContext<'tcx>, _: &'tcx Item<'tcx>)


fn check_block_post(&mut self, _: &LateContext<'tcx>, _: &'tcx Block<'tcx>)


fn check_expr_post(&mut self, _: &LateContext<'tcx>, _: &'tcx Expr<'tcx>)


fn check_impl_item_post(&mut self, _: &LateContext<'tcx>, _: &'tcx ImplItem<'tcx>)

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more
Immutably borrows from an owned value. Read more
Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

The type returned in the event of a conversion error.
Performs the conversion.
The type returned in the event of a conversion error.
Performs the conversion.


Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference’s “Type Layout” chapter for details on type layout guarantees.

Size: 32 bytes