小编Kun*_*Xie的帖子

int _tmain(int argc, _TCHAR* argv[])
{
    signed char min = -128;  //line1
    signed char min2 = 0x80; //line2
}

line1,ok line2,警告C4309'转换':截断常数值

VS2010,-WX -W4

0x80与-128相同,有什么不对？