Fix bug in property attribute access exposed by pure mode.

Cython/Compiler/Nodes.py

@@ -948,15 +948,6 @@ class CVarDefNode(StatNode):
             dest_scope = env
         self.dest_scope = dest_scope
         base_type = self.base_type.analyse(env)
-
-        # If the field is an external typedef, we cannot be sure about the type,
-        # so do conversion ourself rather than rely on the CPython mechanism (through
-        # a property; made in AnalyseDeclarationsTransform).
-        if (dest_scope.is_c_class_scope
-            and self.visibility in ('public', 'readonly')):
-            need_property = True
-        else:
-            need_property = False
         visibility = self.visibility
 
         for declarator in self.declarators:
@@ -990,7 +981,6 @@ class CVarDefNode(StatNode):
                         "Only 'extern' C variable declaration allowed in .pxd file")
                 entry = dest_scope.declare_var(name, type, declarator.pos,
                             cname=cname, visibility=visibility, api=self.api, is_cdef=1)
-                entry.needs_property = need_property
 
 
 class CStructOrUnionDefNode(StatNode):

Cython/Compiler/Symtab.py

@@ -1600,6 +1600,10 @@ class CClassScope(ClassScope):
                 error(pos,
                     "Attribute of extension type cannot be declared %s" % visibility)
             if visibility in ('public', 'readonly'):
+                # If the field is an external typedef, we cannot be sure about the type,
+                # so do conversion ourself rather than rely on the CPython mechanism (through
+                # a property; made in AnalyseDeclarationsTransform).
+                entry.needs_property = True
                 if name == "__weakref__":
                     error(pos, "Special attribute __weakref__ cannot be exposed to Python")
                 if not type.is_pyobject:
@@ -1608,6 +1612,8 @@ class CClassScope(ClassScope):
                          type.create_from_py_utility_code(self))):
                         error(pos,
                               "C attribute of type '%s' cannot be accessed from Python" % type)
+            else:
+                entry.needs_property = False
             return entry
         else:
             if type is unspecified_type: