Re: [Firebird-devel] FB2b2 3221225477

[Vlad H. <hv...@us...>]

>     Send me drwatson.log, please. If you zip it - change .zip extension or 
> SF will not passed this mail. 

    I've received it, thanks. What i can see :

 AV occurs in evl_string.h, line 98

template <typename CharType>
static void preKmp(const CharType *x, int m, SLONG kmpNext[]) 
{
    SLONG i = 0;
    SLONG j = kmpNext[0] = -1;
    while (i < m) {
        while (j > -1 && x[i] != x[j])
            j = kmpNext[j];
        i++;
        j++;
        if (x[i] == x[j])         // AV here
            kmpNext[i] = kmpNext[j];
        else
        kmpNext[i] = j;
        }
}

Some variables at AV time :     m == 0x80, i == 0x80, j == 0x00
Since i must be in range 0..0x7F (0..m-1) we have an AV when x[i] evaluated


    As i understand this is a part of CONTAINING evaluation. The algorithm 
was written by Nickolay and i unfortunately have no knowledge of how it must 
work. May be Adriano can say more ?

Regards,
Vlad

PS Test case will be much appreciated