On Thu, Feb 24, 2011 at 8:52 PM, Robert Miller <rlmills...@gmail.com> wrote: > I'm working on wrapping a C package in Cython for use in Sage, and I'm > having some trouble. I think the problem has to do with the fact that > the C program uses stderr to report issues. When the program exits, I > get the following message: > > SystemError: error return without exception set > > I've looked around online, and found a lot of posts about this issue > for specific C packages, where someone is trying to use the C API to > wrap some C package in Python. But none of the solutions I found > seemed relevant. I also looked in the Cython documentation, but it > doesn't have quite enough information to help. (Please prove me wrong > by posting a link!) > > When the code is run, it doesn't seem to go down a path which actually > uses stderr, but it does successfully use stdout to report its result, > before raising the error. It does make it all the way to the "return > 0;" line, but doesn't seem to actually return to the Cython function > I'm calling it from. Also, I can't use try/except to catch the > SystemError.
This usually means you're returning NULL for an object, or perhaps an error code for a special method (without setting an error). Perhaps some code would be helpful? - Robert -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
