We don't need to check SymbolExportLevel

Author: hyd-dev

src/shims/foreign_items.rs

@@ -154,8 +154,9 @@ pub trait EvalContextExt<'mir, 'tcx: 'mir>: crate::MiriEvalContextExt<'mir, 'tcx
                 |(num, &linkage)| (linkage != Linkage::NotLinked).then_some(CrateNum::new(num + 1)),
             ))
         {
-            // FIXME: Do we need to check `SymbolExportLevel` (the `_` below)?
-            for &(symbol, _) in tcx.exported_symbols(cnum) {
+            // We can ignore `_export_level` here: we are a Rust crate, and everything is exported
+            // from a Rust crate.
+            for &(symbol, _export_level) in tcx.exported_symbols(cnum) {
                 if let ExportedSymbol::NonGeneric(def_id) = symbol {
                     let attrs = tcx.codegen_fn_attrs(def_id);
                     let symbol_name = if let Some(export_name) = attrs.export_name {