From 7411720364f42f7181091f9f69386418813f4507 Mon Sep 17 00:00:00 2001
From: liuyan <yanke.ly@alibaba-inc.com>
Date: Sun, 17 Apr 2022 00:29:14 +0800
Subject: [PATCH] fix IRCOV_TRUNC issue relate commit:
 db1b399af134e715b8ba9a0e4ad9cbafbe06ecb1

---
 src/lj_opt_narrow.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/lj_opt_narrow.c b/src/lj_opt_narrow.c
index 34fe6c39..70686681 100644
--- a/src/lj_opt_narrow.c
+++ b/src/lj_opt_narrow.c
@@ -501,7 +501,8 @@ TRef LJ_FASTCALL lj_opt_narrow_cindex(jit_State *J, TRef tr)
 {
   lua_assert(tref_isnumber(tr));
   if (tref_isnum(tr))
-    return emitir(IRT(IR_CONV, IRT_INTP), tr, (IRT_INTP<<5)|IRT_NUM|IRCONV_ANY);
+    return emitir(IRT(IR_CONV, IRT_INTP), tr,
+            (IRT_INTP<<5)|IRT_NUM|IRCONV_TRUNC|IRCONV_ANY);
   /* Undefined overflow semantics allow stripping of ADDOV, SUBOV and MULOV. */
   return narrow_stripov(J, tr, IR_MULOV,
 			LJ_64 ? ((IRT_INTP<<5)|IRT_INT|IRCONV_SEXT) :