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avoid using a negative value to test 'lua_tounsigned'

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This commit is contained in:
Roberto Ierusalimschy 2013-06-14 15:12:53 -03:00
parent 0beeb4f6fa
commit 0394314c7a
1 changed files with 5 additions and 4 deletions
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9
lauxlib.c
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@ -1,5 +1,5 @@
/*
** $Id: lauxlib.c,v 1.249 2013/04/25 13:53:13 roberto Exp roberto $
** $Id: lauxlib.c,v 1.250 2013/06/04 19:36:42 roberto Exp roberto $
** Auxiliary functions for building Lua libraries
** See Copyright Notice in lua.h
*/
@ -955,10 +955,11 @@ LUALIB_API void luaL_checkversion_ (lua_State *L, lua_Number ver) {
ver, *v);
/* check conversions number -> integer types */
lua_pushnumber(L, -(lua_Number)0x1234);
if (lua_tointeger(L, -1) != -0x1234 ||
lua_tounsigned(L, -1) != (lua_Unsigned)-0x1234)
lua_pushnumber(L, (lua_Number)0x4321);
if (lua_tointeger(L, -2) != -0x1234 ||
lua_tounsigned(L, -1) != (lua_Unsigned)0x4321)
luaL_error(L, "bad conversion number->int;"
" must recompile Lua with proper settings");
lua_pop(L, 1);
lua_pop(L, 2);
}