Segmentation fault using dotc() and dotu(), MKL 8.1.1 on MacOSX 10.4.7

[huil]

Did anyone encounter this problem. The following code causes Segmentation fault (or Bus error in some other similar codes). I've submitted an issue about this.

--------------------------------------

struct cpl
{
double r;
double i;
};

extern "C"
{
cpl zdotc_ (int *N, cpl *X, int *IncX, cpl *Y, int *IncY);
}

int main ()
{

cpl c; c.r = c.i = 1;

cpl a[1] = {c}, b[1] = {c};

int i = 1; int n = 3;

cpl res = zdotc_(&n,a,&i,b,&i);

return 0;
}

[TimP]

On linux, I don't get that failure. It does look as if you are forcing zdotc_() to read beyond the end of your declared a[] and b[].

[Intel_C_Intel]

Thanks fo replying. That's a typo in my posted code, when I was simplifying it.

But the runtime error still exists even that's corrected, something like "Illegal instruction".

[Intel_C_Intel]

I solved the problem. It was caused by incorrect using of Fortran functions returing a complex value, I found the following link: http://www.intel.com/support/performancetools/libraries/mkl/sb/cs-017175.htm#3