From 60ccc012533cd5b4476dde91f19200751d778106 Mon Sep 17 00:00:00 2001
From: cong <q1875486458@gmail.com>
Date: Thu, 11 Jul 2024 01:49:37 +0800
Subject: [PATCH] don't calc already calced frame

---
 tapset/luajit_gc64.sxx | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/tapset/luajit_gc64.sxx b/tapset/luajit_gc64.sxx
index 81d9591..6193c68 100644
--- a/tapset/luajit_gc64.sxx
+++ b/tapset/luajit_gc64.sxx
@@ -559,13 +559,14 @@ function luajit_debug_dumpstack(L, T, depth, base, simple)
         depth = dir = -1
     }
     bt = ""
+    frame = base - @sizeof_TValue
+    bot = $*L->stack->ptr64 + @sizeof_TValue //@LJ_FR2
     while (level != depth) {
         /* lj_debug_frame(L, level, &size) {{{ */
-        bot = $*L->stack->ptr64 + @sizeof_TValue //@LJ_FR2
         found_frame = 0
         tmp_level = level
         /* Traverse frames backwards. */
-        for (nextframe = frame = base - @sizeof_TValue; frame > bot; ) {
+        for (; frame > bot; ) {
             if (@frame_gc(frame) == L) {
                 tmp_level++
             }