@halirutan @Szabolcs Hi, halirutan, Szabolcs. Do you remember that I showed that my fortran librarylink will get different answers every evaluation after making it Listable? The Chat history is here http://chat.stackexchange.com/transcript/message/27047477#27047477

I traced the lines that cause the problem. But I don't know why. Here it is

http://pastebin.com/4TdxGydd C source
http://pastebin.com/vF0U50y2 fortran source

I compile them using intel compiler under windows.

And I found if I delete these two calls in the do loop