Re: [PATCH 2/3] storage.dll16: Correctly handle block values of -1.

[Alexandre Julliard]

Zebediah Figura  writes:
> @@ -610,9 +610,10 @@ STORAGE_get_nth_next_small_blocknr(stream_access16*str,int blocknr,int nr) {
>    READ_HEADER(str);
>    assert(blocknr>=0);
>    while ((nr--) && (blocknr>=0)) {
> -
> if (lastblocknr/128!=blocknr/128) {
> -
> if (lastblocknr>>7 != blocknr>>7)
> -
> {
> int	bigblocknr;
> -
> 	bigblocknr = STORAGE_get_nth_next_big_blocknr(str,sth.sbd_startblock,blocknr/128);
> -
> 	bigblocknr = STORAGE_get_nth_next_big_blocknr(str,sth.sbd_startblock,blocknr>>7);

I'm not sure what you are trying to fix. Most places already check that
blocknr is >= 0, and if it's really negative, you can't rely on right
shift doing the right thing.