1 files changed, 18 insertions, 10 deletions

diff --git a/apps/plugins/lua/lmem.h b/apps/plugins/lua/lmem.h
index 97a888c7f8..bd4f4e0726 100644
--- a/apps/plugins/lua/lmem.h
+++ b/apps/plugins/lua/lmem.h
@@ -1,5 +1,5 @@
 /*
-** $Id$
+** $Id: lmem.h,v 1.40.1.1 2013/04/12 18:48:47 roberto Exp $
 ** Interface to Memory Manager
 ** See Copyright Notice in lua.h
 */
@@ -13,23 +13,30 @@
 #include "llimits.h"
 #include "lua.h"
 
-#define MEMERRMSG       "not enough memory"
-
 
+/*
+** This macro avoids the runtime division MAX_SIZET/(e), as 'e' is
+** always constant.
+** The macro is somewhat complex to avoid warnings:
+** +1 avoids warnings of "comparison has constant result";
+** cast to 'void' avoids warnings of "value unused".
+*/
 #define luaM_reallocv(L,b,on,n,e) \
-        ((cast(size_t, (n)+1) <= MAX_SIZET/(e)) ?  /* +1 to avoid warnings */ \
-                luaM_realloc_(L, (b), (on)*(e), (n)*(e)) : \
-                luaM_toobig(L))
+  (cast(void, \
+     (cast(size_t, (n)+1) > MAX_SIZET/(e)) ? (luaM_toobig(L), 0) : 0), \
+   luaM_realloc_(L, (b), (on)*(e), (n)*(e)))
 
 #define luaM_freemem(L, b, s)   luaM_realloc_(L, (b), (s), 0)
 #define luaM_free(L, b)         luaM_realloc_(L, (b), sizeof(*(b)), 0)
-#define luaM_freearray(L, b, n, t)   luaM_reallocv(L, (b), n, 0, sizeof(t))
+#define luaM_freearray(L, b, n)   luaM_reallocv(L, (b), n, 0, sizeof((b)[0]))
 
-#define luaM_malloc(L,t)        luaM_realloc_(L, NULL, 0, (t))
+#define luaM_malloc(L,s)        luaM_realloc_(L, NULL, 0, (s))
 #define luaM_new(L,t)           cast(t *, luaM_malloc(L, sizeof(t)))
 #define luaM_newvector(L,n,t) \
                 cast(t *, luaM_reallocv(L, NULL, 0, n, sizeof(t)))
 
+#define luaM_newobject(L,tag,s) luaM_realloc_(L, NULL, tag, (s))
+
 #define luaM_growvector(L,v,nelems,size,t,limit,e) \
           if ((nelems)+1 > (size)) \
             ((v)=cast(t *, luaM_growaux_(L,v,&(size),sizeof(t),limit,e)))
@@ -37,13 +44,14 @@
 #define luaM_reallocvector(L, v,oldn,n,t) \
    ((v)=cast(t *, luaM_reallocv(L, v, oldn, n, sizeof(t))))
 
+LUAI_FUNC l_noret luaM_toobig (lua_State *L);
 
+/* not to be called directly */
 LUAI_FUNC void *luaM_realloc_ (lua_State *L, void *block, size_t oldsize,
                                                           size_t size);
-LUAI_FUNC void *luaM_toobig (lua_State *L);
 LUAI_FUNC void *luaM_growaux_ (lua_State *L, void *block, int *size,
                                size_t size_elem, int limit,
-                               const char *errormsg);
+                               const char *what);
 
 #endif