From 86d414f5cae062b06998ec66b0696a47d4f6a0f0 Mon Sep 17 00:00:00 2001
From: Mike Pall <mike>
Date: Mon, 25 May 2026 01:25:32 +0200
Subject: Prevent sanitizer warning in os.time().

Reported by Sergey Bronnikov. #1454
---
 src/lib_os.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'src')

diff --git a/src/lib_os.c b/src/lib_os.c
index 1dd45e549..60b7b82d6 100644
--- a/src/lib_os.c
+++ b/src/lib_os.c
@@ -234,8 +234,8 @@ LJLIB_CF(os_time)
     ts.tm_min = getfield(L, "min", 0);
     ts.tm_hour = getfield(L, "hour", 12);
     ts.tm_mday = getfield(L, "day", -1);
-    ts.tm_mon = getfield(L, "month", -1) - 1;
-    ts.tm_year = getfield(L, "year", -1) - 1900;
+    ts.tm_mon = (int)((unsigned int)getfield(L, "month", -1) - 1u);
+    ts.tm_year = (int)((unsigned int)getfield(L, "year", -1) - 1900u);
     ts.tm_isdst = getboolfield(L, "isdst");
     t = mktime(&ts);
   }
-- 
cgit v1.2.3-55-g6feb


From c3b379bf50c8819c61daa3afd9f21d9ec5708bd5 Mon Sep 17 00:00:00 2001
From: Mike Pall <mike>
Date: Mon, 25 May 2026 01:26:26 +0200
Subject: FFI: Prevent sanitizer warning in carith_ptr().

Reported by Sergey Bronnikov. #1459
---
 src/lj_carith.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/lj_carith.c b/src/lj_carith.c
index e3287de9d..b1da0e2c3 100644
--- a/src/lj_carith.c
+++ b/src/lj_carith.c
@@ -133,7 +133,7 @@ static int carith_ptr(lua_State *L, CTState *cts, CDArith *ca, MMS mm)
       return 0;
     lj_cconv_ct_ct(cts, ctype_get(cts, CTID_INT_PSZ), ca->ct[1],
 		   (uint8_t *)&idx, ca->p[1], 0);
-    if (mm == MM_sub) idx = -idx;
+    if (mm == MM_sub) idx = (ptrdiff_t)(~(uintptr_t)idx+1u);
   } else if (mm == MM_add && ctype_isnum(ctp->info) &&
       (ctype_isptr(ca->ct[1]->info) || ctype_isrefarray(ca->ct[1]->info))) {
     /* Swap pointer and index. */
-- 
cgit v1.2.3-55-g6feb