From f81d0bbd4f940399eb4b68845802bc3fe1cad73a Mon Sep 17 00:00:00 2001
From: Roberto Ierusalimschy <roberto@inf.puc-rio.br>
Date: Tue, 17 Dec 2024 13:36:12 -0300
Subject: Detail in 'luaD_inctop'

Protect stack top before possible stack reallocation. (In the current
implementation, a stack reallocation cannot call an emergency
collection, so there is no bug, but it is safer not to depend on that.)
---
 ldo.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'ldo.c')

diff --git a/ldo.c b/ldo.c
index 9459391f..f825d959 100644
--- a/ldo.c
+++ b/ldo.c
@@ -373,8 +373,8 @@ void luaD_shrinkstack (lua_State *L) {
 
 
 void luaD_inctop (lua_State *L) {
-  luaD_checkstack(L, 1);
   L->top.p++;
+  luaD_checkstack(L, 1);
 }
 
 /* }================================================================== */
-- 
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