Intialize object item pointer properly & C++ compat

Cython/Compiler/ExprNodes.py

@@ -12,6 +12,7 @@ cython.declare(error=object, warning=object, warn_once=object, InternalError=obj
                Builtin=object, Symtab=object, Utils=object, find_coercion_error=object,
                debug_disposal_code=object, debug_temp_alloc=object, debug_coercion=object)
 
+import sys
 import operator
 
 from Errors import error, warning, warn_once, InternalError, CompileError
@@ -3078,6 +3079,12 @@ class IndexNode(ExprNode):
         buffer_entry = self.buffer_entry()
         have_gil = not self.in_nogil_context
 
+        if sys.version_info < (3,):
+            def next_(it):
+                return it.next()
+        else:
+            next_ = next
+
         have_slices = False
         it = iter(self.indices)
         for index in self.original_indices:
@@ -3085,13 +3092,13 @@ class IndexNode(ExprNode):
             have_slices = have_slices or is_slice
             if is_slice:
                 if not index.start.is_none:
-                    index.start = it.next()
+                    index.start = next_(it)
                 if not index.stop.is_none:
-                    index.stop = it.next()
+                    index.stop = next_(it)
                 if not index.step.is_none:
-                    index.step = it.next()
+                    index.step = next_(it)
             else:
-                it.next()
+                next_(it)
 
         assert not list(it)
 

Cython/Compiler/MemoryView.py

@@ -510,8 +510,8 @@ class ContigSliceIter(SliceIter):
                                     for i in range(self.ndim))
         code.putln("Py_ssize_t __pyx_temp_extent = %s;" % total_size)
         code.putln("Py_ssize_t __pyx_temp_idx;")
-        code.putln("%s *__pyx_temp_pointer = %s.data;" % (type_decl,
-                                                          self.slice_temp))
+        code.putln("%s *__pyx_temp_pointer = (%s *) %s.data;" % (
+                            type_decl, type_decl, self.slice_temp))
         code.putln("for (__pyx_temp_idx = 0; "
                         "__pyx_temp_idx < __pyx_temp_extent; "
                         "__pyx_temp_idx++) {")

Cython/Utility/MemoryView.pyx

@@ -407,11 +407,14 @@ cdef class memoryview(object):
         else:
             item = <void *> array
 
-        try:
-            self.assign_item_from_object(<char *> item, value)
-        except:
-            free(tmp)
-            raise
+        if self.dtype_is_object:
+            (<PyObject **> item)[0] = <PyObject *> value
+        else:
+            try:
+                self.assign_item_from_object(<char *> item, value)
+            except:
+                free(tmp)
+                raise
 
         # It would be easy to support indirect dimensions, but it's easier
         # to disallow :)