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sac2c_d snp3.codegencrash.sac -v1 
Internal compiler error
Assertion "size >= 0" failed at /home/sac/sac2c.AprilFool/sac2c/src/libsac2c/codegen/icm2c_std.c:1250 -- array with size <0 found!

cat snp3.codegencrash.sac 
use Array: {genarray,sum,shape,toi,sel,-,drop,==};

inline    // ! ! ! must be inlined to fail
bool[.,.,.] jotdoteqIIB(int [.] x, int [.,.] y)
{ /* AxA outer product */
        cell = genarray(shape(y), false);
        z = with { (. <= iv <= .) { xitem = x[iv];
                } : xitem == y;
        } : genarray(shape(x), cell);
        return(z);
}

int[.,.] plusslXBIFOLD(bool[.,.,.] y)
{ /* last axis reduce rank-2 or greater matrix w/folding */
        zrho = [3,10000];
        z = with { (. <= iv <= .)
                        : sum(toi(y[iv]));
        } : genarray(zrho, 0);
        return(z);
}

int main()
{ 
        snp_0 = genarray([10000,80000], 2);
        A_17=jotdoteqIIB([0, 1, 2],snp_0);
        A_56=plusslXBIFOLD( A_17);
        return(sum(A_56));
}

sac2c -V
sac2c 1.3.3-MijasCosta-677-g0587e
build-type: RELEASE
built-by: "sac" at 2021-06-23T15:20:00]