From f2a813ae108a04e7de0478bd3c3ebf332268b043 Mon Sep 17 00:00:00 2001 From: Roberto Ierusalimschy Date: Sat, 28 Mar 2015 16:16:55 -0300 Subject: [PATCH] details (avoid some 'lint' warnings) --- lutf8lib.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/lutf8lib.c b/lutf8lib.c index af5a9b90..a2b42c72 100644 --- a/lutf8lib.c +++ b/lutf8lib.c @@ -1,5 +1,5 @@ /* -** $Id: lutf8lib.c,v 1.13 2014/11/02 19:19:04 roberto Exp roberto $ +** $Id: lutf8lib.c,v 1.14 2015/03/05 16:07:46 roberto Exp roberto $ ** Standard library for UTF-8 manipulation ** See Copyright Notice in lua.h */ @@ -11,6 +11,7 @@ #include +#include #include #include @@ -37,7 +38,7 @@ static lua_Integer u_posrelat (lua_Integer pos, size_t len) { ** Decode one UTF-8 sequence, returning NULL if byte sequence is invalid. */ static const char *utf8_decode (const char *o, int *val) { - static unsigned int limits[] = {0xFF, 0x7F, 0x7FF, 0xFFFF}; + static const unsigned int limits[] = {0xFF, 0x7F, 0x7FF, 0xFFFF}; const unsigned char *s = (const unsigned char *)o; unsigned int c = s[0]; unsigned int res = 0; /* final result */ @@ -106,9 +107,9 @@ static int codepoint (lua_State *L) { luaL_argcheck(L, posi >= 1, 2, "out of range"); luaL_argcheck(L, pose <= (lua_Integer)len, 3, "out of range"); if (posi > pose) return 0; /* empty interval; return no values */ - n = (int)(pose - posi + 1); - if (posi + n <= pose) /* (lua_Integer -> int) overflow? */ + if (pose - posi >= INT_MAX) /* (lua_Integer -> int) overflow? */ return luaL_error(L, "string slice too long"); + n = (int)(pose - posi) + 1; luaL_checkstack(L, n, "string slice too long"); n = 0; se = s + pose; @@ -234,7 +235,7 @@ static int iter_codes (lua_State *L) { #define UTF8PATT "[\0-\x7F\xC2-\xF4][\x80-\xBF]*" -static struct luaL_Reg funcs[] = { +static const luaL_Reg funcs[] = { {"offset", byteoffset}, {"codepoint", codepoint}, {"char", utfchar},