Index: numarray-1.5.1/Src/_ndarraymodule.c
===================================================================
--- numarray-1.5.1.orig/Src/_ndarraymodule.c
+++ numarray-1.5.1/Src/_ndarraymodule.c
@@ -592,8 +592,8 @@ _ndarray_simpleIndexing(PyArrayObject *s
 
 /* Copied from Python-2.3.3 Objects/sliceobject.c */
 int
-_GetIndicesEx(PySliceObject *r, int length,
-		     int *start, int *stop, int *step, int *slicelength)
+_GetIndicesEx(PySliceObject *r, Py_ssize_t length,
+		     Py_ssize_t *start, Py_ssize_t *stop, Py_ssize_t *step, Py_ssize_t *slicelength)
 {
 	/* this is harder to get right than you might think */
 
@@ -702,7 +702,7 @@ _slicedIndexing0(PyArrayObject *self, Py
 			self->nd       = _snip( self->nd, self->dimensions, dim);
 			self->nstrides = _snip( self->nstrides, self->strides, dim);
 		} else if (PySlice_Check(slice)) {
-			int start, stop, step, strided;
+			Py_ssize_t start, stop, step, strided;
 			if (_GetIndicesEx( (PySliceObject *) slice, 
 					   self->dimensions[dim], 
 					   &start, &stop, &step, &strided) < 0)
@@ -714,9 +714,9 @@ _slicedIndexing0(PyArrayObject *self, Py
 				Py_INCREF(Py_None);
 				return Py_None;
 			}
-			self->byteoffset += self->strides[dim] * start;
-			self->dimensions[dim] = strided;
-			self->strides[dim] *= step;
+			self->byteoffset += (maybelong) (self->strides[dim] * start);
+			self->dimensions[dim] = (maybelong) strided;
+			self->strides[dim] *= (maybelong) step;
 			++ dim;
 		} else {
 			Py_DECREF(rest);