[pypy-commit] pypy release-2.1.x: fix issue 1537 with numpypy __array_interface__

[mattip]

Author: Matti Picus <matti.picus at gmail.com>
Branch: release-2.1.x
Changeset: r65415:e64857a85f0e
Date: 2013-07-14 20:02 +0300
http://bitbucket.org/pypy/pypy/changeset/e64857a85f0e/

Log:	fix issue 1537 with numpypy __array_interface__

diff --git a/pypy/module/micronumpy/arrayimpl/concrete.py b/pypy/module/micronumpy/arrayimpl/concrete.py
--- a/pypy/module/micronumpy/arrayimpl/concrete.py
+++ b/pypy/module/micronumpy/arrayimpl/concrete.py
@@ -280,7 +280,7 @@
                                      backstrides, shape, self, orig_arr)
 
     def get_storage_as_int(self, space):
-        return rffi.cast(lltype.Signed, self.storage)
+        return rffi.cast(lltype.Signed, self.storage) + self.start
 
     def get_storage(self):
         return self.storage
diff --git a/pypy/module/micronumpy/test/test_numarray.py b/pypy/module/micronumpy/test/test_numarray.py
--- a/pypy/module/micronumpy/test/test_numarray.py
+++ b/pypy/module/micronumpy/test/test_numarray.py
@@ -2212,6 +2212,11 @@
         a = a[::2]
         i = a.__array_interface__
         assert isinstance(i['data'][0], int)
+        b = array(range(9), dtype=int)
+        c = b[3:5]
+        b_data = b.__array_interface__['data'][0]
+        c_data = c.__array_interface__['data'][0]
+        assert b_data + 3 * b.dtype.itemsize == c_data
 
     def test_array_indexing_one_elem(self):
         from numpypy import array, arange