fix the crossing function issue

Author: chenyukang

compiler/rustc_resolve/src/late.rs

@@ -876,6 +876,8 @@ impl<'a: 'ast, 'ast> Visitor<'ast> for LateResolutionVisitor<'a, '_, 'ast> {
                             // Ignore errors in function bodies if this is rustdoc
                             // Be sure not to set this until the function signature has been resolved.
                             let previous_state = replace(&mut this.in_func_body, true);
+                            // We only care block in the same function
+                            this.last_block_rib = None;
                             // Resolve the function body, potentially inside the body of an async closure
                             this.with_lifetime_rib(
                                 LifetimeRibKind::Elided(LifetimeRes::Infer),

compiler/rustc_resolve/src/late/diagnostics.rs

@@ -616,7 +616,7 @@ impl<'a: 'ast, 'ast> LateResolutionVisitor<'a, '_, 'ast> {
         }
 
         // Try to find in last block rib
-        if let Some(rib) = &self.last_block_rib {
+        if let Some(rib) = &self.last_block_rib && let RibKind::NormalRibKind = rib.kind {
             for (ident, &res) in &rib.bindings {
                 if let Res::Local(_) = res && path.len() == 1 &&
                     ident.span.eq_ctxt(path[0].ident.span) &&