include EIIs in used crates check

jdonszelmann · jdonszelmann · commit af03e67ef97c · 2025-04-18T17:33:48.000+02:00
diff --git a/compiler/rustc_resolve/src/check_unused.rs b/compiler/rustc_resolve/src/check_unused.rs
@@ -402,7 +402,7 @@ impl Resolver<'_, '_> {
                         !tcx.is_compiler_builtins(cnum)
                             && !tcx.is_panic_runtime(cnum)
                             && !tcx.has_global_allocator(cnum)
-                        // TODO: test for EII in the crate
+                            && tcx.externally_implementable_items(cnum).is_empty()
                     }) {
                         maybe_unused_extern_crates.insert(id, import.span);
                     }

Original file line number	Diff line number	Diff line change
`@@ -402,7 +402,7 @@ impl Resolver<'_, '_> {`
`402`	`402`	`!tcx.is_compiler_builtins(cnum)`
`403`	`403`	`&& !tcx.is_panic_runtime(cnum)`
`404`	`404`	`&& !tcx.has_global_allocator(cnum)`
`405`		`- // TODO: test for EII in the crate`
	`405`	`+ && tcx.externally_implementable_items(cnum).is_empty()`
`406`	`406`	`}) {`
`407`	`407`	`maybe_unused_extern_crates.insert(id, import.span);`
`408`	`408`	`}`