From 3281bbdee988aa4de0d1c920ba5844a004cc440d Mon Sep 17 00:00:00 2001
From: Dmitry Vasilev <dmitry.vasil@gmail.com>
Date: Fri, 16 Jun 2023 07:47:27 +0300
Subject: [PATCH] fix deferred calls bug

---
 src/runtime.js |  4 +++-
 test/test.js   | 17 +++++++++++++++++
 2 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/src/runtime.js b/src/runtime.js
index 4d8d6cf..752c51e 100644
--- a/src/runtime.js
+++ b/src/runtime.js
@@ -185,7 +185,9 @@ export const do_eval_expand_calltree_node = (cxt, node) => {
     // do nothing. Exception was caught and recorded inside '__trace'
   }
   cxt.is_recording_deferred_calls = true
-  return do_expand_calltree_node(cxt, node)
+  const result = do_expand_calltree_node(cxt, node)
+  cxt.children = null
+  return result
 }
 
 
diff --git a/test/test.js b/test/test.js
index 62bf1cc..9998fa7 100644
--- a/test/test.js
+++ b/test/test.js
@@ -2756,6 +2756,23 @@ const y = x()`
     assert_equal(get_deferred_calls(result), null)
   }),
 
+  test('deferred_calls several calls bug', () => {
+    const code = `
+      export const fn = i => i == 0 ? 0 : fn(i - 1)
+    `
+
+    const {state: i, on_deferred_call} = test_deferred_calls_state(code)
+
+    // Make deferred call
+    i.modules[''].fn(10)
+
+    const state = on_deferred_call(i)
+    const call = get_deferred_calls(state)[0]
+    const expanded = COMMANDS.calltree.click(state, call.id)
+    // Make deferred call again. There was a runtime error
+    expanded.modules[''].fn(10)
+  }),
+
   test('async/await await non promise', async () => {
     await assert_code_evals_to_async(
       `