From: kwolekr <kwolekr@minetest.net>
Date: Mon, 26 Oct 2015 08:01:01 +0000 (-0400)
Subject: SAPI: Fix seed parameter truncation for LuaPseudoRandom constructor
X-Git-Tag: 0.4.14~562
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=bc0318d2fc0d435e20b1186203ce2908162241ca;p=oweals%2Fminetest.git

SAPI: Fix seed parameter truncation for LuaPseudoRandom constructor

Also fix a potential seed truncation issue on platforms where the
range of ptrdiff_t (the underlying type of lua_Integer) is too small.
---

diff --git a/src/script/lua_api/l_noise.cpp b/src/script/lua_api/l_noise.cpp
index 43dd32023..6dcffa31c 100644
--- a/src/script/lua_api/l_noise.cpp
+++ b/src/script/lua_api/l_noise.cpp
@@ -440,7 +440,7 @@ int LuaPseudoRandom::create_object(lua_State *L)
 {
 	NO_MAP_LOCK_REQUIRED;
 
-	int seed = luaL_checknumber(L, 1);
+	u64 seed = luaL_checknumber(L, 1);
 	LuaPseudoRandom *o = new LuaPseudoRandom(seed);
 	*(void **)(lua_newuserdata(L, sizeof(void *))) = o;
 	luaL_getmetatable(L, className);
@@ -537,8 +537,8 @@ int LuaPcgRandom::create_object(lua_State *L)
 {
 	NO_MAP_LOCK_REQUIRED;
 
-	lua_Integer seed = luaL_checknumber(L, 1);
-	LuaPcgRandom *o  = lua_isnumber(L, 2) ?
+	u64 seed = luaL_checknumber(L, 1);
+	LuaPcgRandom *o = lua_isnumber(L, 2) ?
 		new LuaPcgRandom(seed, lua_tointeger(L, 2)) :
 		new LuaPcgRandom(seed);
 	*(void **)(lua_newuserdata(L, sizeof(void *))) = o;