[Bug c/44848] Bogus "array subscript is below array bounds" with loops

[eli dot friedman at gmail dot com]

------- Comment #2 from eli dot friedman at gmail dot com  2010-07-08 03:08 
-------
I'm afraid I mis-reduced the issue; try the following (which reproduces on both
trunk r161941 and 4.5.0):

typedef struct LLSModel{
    double variance[32];
    int indep_count;
}LLSModel;

void av_solve_lls(LLSModel *m, double (*factor)[33], int count, int min_order){
    int i,j,k;

    for(i=0; i<count; i++){
        for(j=i; j<count; j++){
            double sum= factor[i][j];

            for(k=i-1; k>=0; k--)
                sum -= factor[i][k];

            factor[j][i] = sum;
        }
    }
    for(j=count-1; j>=min_order; j--){
        for(i=j; i>=0; i--)
            factor[j][i]= 1 / factor[i][i];

        m->variance[j]= factor[0][0];
        for(i=0; i<=j; i++)
            m->variance[j] += factor[j][i];
    }
}


-- 

eli dot friedman at gmail dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |UNCONFIRMED
         Resolution|DUPLICATE                   |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44848