From 03bf7fdd4f3a588cd7ff0a8c51ed68c596d3d575 Mon Sep 17 00:00:00 2001
From: Roberto Ierusalimschy <roberto@inf.puc-rio.br>
Date: Tue, 1 Jul 2025 16:07:03 -0300
Subject: Added missing casts from lua_Unsigned to size_t

size_t can be smaller than lua_Usigned.
---
 lstrlib.c | 4 ++--
 lundump.c | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/lstrlib.c b/lstrlib.c
index 306cd0bf..8056c6ff 100644
--- a/lstrlib.c
+++ b/lstrlib.c
@@ -1811,8 +1811,8 @@ static int str_unpack (lua_State *L) {
         lua_Unsigned len = (lua_Unsigned)unpackint(L, data + pos,
                                           h.islittle, cast_int(size), 0);
         luaL_argcheck(L, len <= ld - pos - size, 2, "data string too short");
-        lua_pushlstring(L, data + pos + size, len);
-        pos += len;  /* skip string */
+        lua_pushlstring(L, data + pos + size, cast_sizet(len));
+        pos += cast_sizet(len);  /* skip string */
         break;
       }
       case Kzstr: {
diff --git a/lundump.c b/lundump.c
index ade40384..76f0ddc1 100644
--- a/lundump.c
+++ b/lundump.c
@@ -109,7 +109,7 @@ static lua_Unsigned loadVarint (LoadState *S, lua_Unsigned limit) {
 
 
 static size_t loadSize (LoadState *S) {
-  return loadVarint(S, MAX_SIZE);
+  return cast_sizet(loadVarint(S, MAX_SIZE));
 }
 
 
-- 
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