Alberto Ruiz-2 wrote:
Hello,
I have had exactly the same problem with my bindings to GSL, BLAS and LAPACK. The foreign functions (!) randomly (but very frequently) produced NaN with ghc-6.8.1 -O. As usual, I first thought that I had a subtle bug related to the foreign pointers, but after a lot of refactoring, experiments, and tracing everything, I'm reasonably sure that memory is safely used. What I have found is that the same errors can be reproduced on ghc-6.6.1 with -O -fasm. So I tried -O -fvia-C on ghc-6.8.1 (which now it is not the default) and apparently everything works well. So it seems that now the ffi requires and additional and explicit -fvia-C. In any case I don't know why -fasm produces those strange NaN in precompiled foreign functions...
Alberto
Arrgh, the fix of using -fvia-C doesn't seem to be working for me. You got my hopes up for a moment :). I also am calling BLAS via C bindings. I am going to try to distill my case down to the bare minimum if possible and then provide an example. It may take a while. -- View this message in context: http://www.nabble.com/ghc-6.8.1-bug--tf4810375.html#a13779349 Sent from the Haskell - Haskell-Cafe mailing list archive at Nabble.com.