some details to avoid warnings

lcode.c

@@ -1,5 +1,5 @@
 /*
-** $Id: lcode.c,v 2.84 2014/03/09 19:21:34 roberto Exp roberto $
+** $Id: lcode.c,v 2.85 2014/03/21 13:52:33 roberto Exp roberto $
 ** Code generator for Lua
 ** See Copyright Notice in lua.h
 */
@@ -317,7 +317,7 @@ static int addk (FuncState *fs, TValue *key, TValue *v) {
   TValue *idx = luaH_set(L, fs->ls->h, key);  /* index scanner table */
   int k, oldsize;
   if (ttisinteger(idx)) {  /* is there an index there? */
-    k = ivalue(idx);
+    k = cast_int(ivalue(idx));
     /* correct value? (warning: must distinguish floats from integers!) */
     if (k < fs->nk && ttype(&f->k[k]) == ttype(v) &&
                       luaV_rawequalobj(&f->k[k], v))

ldump.c

@@ -1,5 +1,5 @@
 /*
-** $Id: ldump.c,v 2.27 2014/03/11 18:56:27 roberto Exp roberto $
+** $Id: ldump.c,v 2.28 2014/03/27 15:58:05 roberto Exp roberto $
 ** save precompiled Lua chunks
 ** See Copyright Notice in lua.h
 */
@@ -73,7 +73,7 @@ static void DumpString (const TString *s, DumpState *D) {
   else {
     size_t size = s->tsv.len + 1;  /* include trailing '\0' */
     if (size < 0xFF)
-      DumpByte(size, D);
+      DumpByte(cast_int(size), D);
     else {
       DumpByte(0xFF, D);
       DumpVar(size, D);

lmathlib.c

@@ -1,5 +1,5 @@
 /*
-** $Id: lmathlib.c,v 1.92 2013/07/22 16:05:53 roberto Exp roberto $
+** $Id: lmathlib.c,v 1.93 2014/03/31 19:00:52 roberto Exp roberto $
 ** Standard mathematical library
 ** See Copyright Notice in lua.h
 */
@@ -250,7 +250,7 @@ static int math_random (lua_State *L) {
 
 
 static int math_randomseed (lua_State *L) {
-  srand(luaL_checkunsigned(L, 1));
+  srand((unsigned int)luaL_checkunsigned(L, 1));
   (void)rand(); /* discard first value to avoid undesirable correlations */
   return 0;
 }

ltable.c

@@ -1,5 +1,5 @@
 /*
-** $Id: ltable.c,v 2.83 2013/09/11 12:26:14 roberto Exp roberto $
+** $Id: ltable.c,v 2.84 2014/01/27 13:34:32 roberto Exp roberto $
 ** Lua tables (hash)
 ** See Copyright Notice in lua.h
 */
@@ -443,10 +443,10 @@ TValue *luaH_newkey (lua_State *L, Table *t, const TValue *key) {
       /* yes; move colliding node into free position */
       while (othern + gnext(othern) != mp)  /* find previous */
         othern += gnext(othern);
-      gnext(othern) = f - othern;  /* re-chain with 'f' in place of 'mp' */
+      gnext(othern) = cast_int(f - othern);  /* rechain to point to 'f' */
       *f = *mp;  /* copy colliding node into free pos. (mp->next also goes) */
       if (gnext(mp) != 0) {
-        gnext(f) += mp - f;  /* correct 'next' */
+        gnext(f) += cast_int(mp - f);  /* correct 'next' */
         gnext(mp) = 0;  /* now 'mp' is free */
       }
       setnilvalue(gval(mp));
@@ -454,9 +454,9 @@ TValue *luaH_newkey (lua_State *L, Table *t, const TValue *key) {
     else {  /* colliding node is in its own main position */
       /* new node will go into free position */
       if (gnext(mp) != 0)
-        gnext(f) = (mp + gnext(mp)) - f;  /* chain new position */
+        gnext(f) = cast_int((mp + gnext(mp)) - f);  /* chain new position */
       else lua_assert(gnext(f) == 0);
-      gnext(mp) = f - mp;
+      gnext(mp) = cast_int(f - mp);
       mp = f;
     }
   }

lundump.c

@@ -1,5 +1,5 @@
 /*
-** $Id: lundump.c,v 2.34 2014/03/11 18:56:27 roberto Exp roberto $
+** $Id: lundump.c,v 2.35 2014/03/27 15:58:05 roberto Exp roberto $
 ** load precompiled Lua chunks
 ** See Copyright Notice in lua.h
 */
@@ -203,7 +203,7 @@ static void LoadFunction (LoadState *S, Proto *f) {
 
 static void checkliteral (LoadState *S, const char *s, const char *msg) {
   char buff[sizeof(LUA_SIGNATURE) + sizeof(LUAC_DATA)]; /* larger than both */
-  int len = strlen(s);
+  size_t len = strlen(s);
   LoadVector(S, buff, len);
   if (memcmp(s, buff, len) != 0)
     error(S, msg);

lutf8lib.c

@@ -1,5 +1,5 @@
 /*
-** $Id: lutf8lib.c,v 1.3 2014/03/20 14:11:00 roberto Exp roberto $
+** $Id: lutf8lib.c,v 1.4 2014/03/20 19:36:02 roberto Exp roberto $
 ** Standard library for UTF-8 manipulation
 ** See Copyright Notice in lua.h
 */
@@ -187,7 +187,7 @@ static int byteoffset (lua_State *L) {
 static int iter_aux (lua_State *L) {
   size_t len;
   const char *s = luaL_checklstring(L, 1, &len);
-  int n = lua_tointeger(L, 2) - 1;
+  lua_Integer n = lua_tointeger(L, 2) - 1;
   if (n < 0)  /* first iteration? */
     n = 0;  /* start from here */
   else if (n < (lua_Integer)len) {