Vivian McPhail wrote:

Hi All,

I wrote a binding to matlab matrix.h and mat.h. My test program works when I compile a binary, but when I try to use the code in ghci nothing happens. There are no error messages, but all computations return a blank line.

Does this fall into a known class of error?

I can provide my source code, but because of licensing requirements I can't provide the .dll's against which the code is linked.

I can't think of a reason off-hand why this would happen. Could you investigate deeper by adding traces into your code? If you can boil down a small example that doesn't have licensing restrictions, please submit it as a bug report. Cheers, Simon