28 Feb
2007
28 Feb
'07
7:25 p.m.
On 2/28/07, Nagy Gabor <ngaba@petra.hos.u-szeged.hu> wrote:
As I see, the author thinks of inforeq as exactly one bit is set to 1. However, if inforeq=0xFF and infolevel!=0, this is a bug. And if inforeq=0, this condition is never true.
There is a bug here, but it's not what you're explaining. info->infolevel is |= to the new inforeq flags. This makes the and process work UNLESS infolevel is a composite (more than one flag). The real bug is here: - if(info->infolevel & inforeq) { + if(inforeq ^= (info->infolevel & inforeq)) { for example: info->infolevel == 1011 inforeq == 0111 & result == 0011 (so something is already loaded) ^= result == 0100 (exactly what we want, the missing piece)