Support cpdef void methods.

CHANGES.rst

@@ -80,6 +80,8 @@ Bugs fixed
 * C++ exception declarations with mapping functions could fail to compile when
   pre-declared in .pxd files.
 
+* ``cpdef void`` methods are now permitted.
+
 Other changes
 -------------
 

Cython/Compiler/Nodes.py

@@ -4141,7 +4141,12 @@ class OverrideCheckNode(StatNode):
             self.pos, function=self.func_node,
             args=[ ExprNodes.NameNode(self.pos, name=arg.name)
                    for arg in self.args[first_arg:] ])
-        self.body = ReturnStatNode(self.pos, value=call_node)
+        if env.return_type.is_void or env.return_type.is_returncode:
+            self.body = StatListNode(self.pos, stats=[
+                            ExprStatNode(self.pos, expr=call_node),
+                            ReturnStatNode(self.pos, value=None)])
+        else:
+            self.body = ReturnStatNode(self.pos, value=call_node)
         self.body = self.body.analyse_expressions(env)
         return self
 

tests/run/cpdef.pyx

@@ -15,3 +15,27 @@ cpdef void raisable() except *:
     """
     print('here')
     raise RuntimeError()
+
+cdef class A:
+    """
+    >>> A().foo()
+    A
+    """
+    cpdef void foo(self):
+        print "A"
+
+cdef class B(A):
+    """
+    >>> B().foo()
+    B
+    """
+    cpdef void foo(self):
+        print "B"
+
+class C(B):
+    """
+    >>> C().foo()
+    C
+    """
+    def foo(self):
+        print "C"