> rif <[EMAIL PROTECTED]> writes: > > > I also tried a call of the form (in my program) > > > > (system:vector-sap array) > > > > But this causes segmentation violations inside the called C > > function, which I don't get if I allocate an alien object of the > > same size and pass that. Any idea what to do? > > This might be due to a GC happening at the wrong moment. At the end of > section 8.7.5 in the CMUCL manual they say > > "In this example, it may be useful to wrap the inner let expression > in an unwind-protect that first turns off garbage collection and > then turns garbage collection on afterwards. This will prevent > garbage collection from moving x and y after we have obtained the > (now erroneous) addresses but before the call to dotprod is made." > > Did you do that? > > Edi. >
I didn't do this, but I doubt that's the problem. I only call the function once, and it's not doing any consing, and I get something printed to the screen everytime garbage collection happens, and it doesn't seem to have happened. But I'll check more tomorrow and see if I can figure out what's going on. rif
