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new global macro 'LUA_MAXUNSIGNED'

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This commit is contained in:
Roberto Ierusalimschy
2014-04-12 11:45:10 -03:00
parent b390d7c168
commit ef789d4161
3 changed files with 6 additions and 10 deletions
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4
lstrlib.c
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@@ -1,5 +1,5 @@
/*
** $Id: lstrlib.c,v 1.193 2014/04/10 18:24:12 roberto Exp roberto $
** $Id: lstrlib.c,v 1.194 2014/04/10 19:45:43 roberto Exp roberto $
** Standard library for string operations and pattern-matching
** See Copyright Notice in lua.h
*/
@@ -1008,7 +1008,7 @@ static int dumpint (char *buff, lua_Unsigned n, int littleendian, int size) {
/* OK if there are only zeros left in higher bytes,
or only ones left (excluding non-signal bits in last byte) */
return ((n & ~(lua_Integer)MC) == 0 ||
(n | SM) == (~(lua_Unsigned)0 >> ((size - 1) * NB)));
(n | SM) == (LUA_MAXUNSIGNED >> ((size - 1) * NB)));
}
else return 1; /* no overflow can occur with full size */
}