Fix global array type narrow

Author: CppCXY

crates/emmylua_code_analysis/src/compilation/test/flow.rs

@@ -1227,4 +1227,17 @@ end
             "#,
         ));
     }
+
+    #[test]
+    fn test_array_flow() {
+        let mut ws = VirtualWorkspace::new_with_init_std_lib();
+        assert!(ws.check_code_for(
+            DiagnosticCode::NeedCheckNil,
+            r#"
+            for i = 1, #_G.arg do
+                print(_G.arg[i].char())
+            end
+            "#,
+        ));
+    }
 }

crates/emmylua_code_analysis/src/semantic/infer/infer_name.rs

@@ -68,8 +68,12 @@ pub fn get_name_expr_var_ref_id(
             let references_index = db.get_reference_index();
             let range = name_expr.get_range();
             let file_ref = references_index.get_local_reference(&file_id)?;
-            let decl_id = file_ref.get_decl_id(&range)?;
-            Some(VarRefId::VarRef(decl_id))
+            if let Some(decl_id) = file_ref.get_decl_id(&range) {
+                return Some(VarRefId::VarRef(decl_id));
+            }
+
+            let global_decl_id = db.get_global_index().resolve_global_decl_id(db, name)?;
+            Some(VarRefId::VarRef(global_decl_id))
         }
     }
 }