Fix #156, missing self in cpdef method.

--HG--
rename : tests/bugs/missing_self_in_cpdef_method_T156.pyx => tests/errors/missing_self_in_cpdef_method_T156.pyx

Cython/Compiler/Nodes.py

@@ -1336,7 +1336,7 @@ class CFuncDefNode(FuncDefNode):
         self.entry.inline_func_in_pxd = self.inline_in_pxd
         self.return_type = type.return_type
         
-        if self.overridable:
+        if self.overridable and len(self.args) > 0:
             import ExprNodes
             py_func_body = self.call_self_node(is_module_scope = env.is_module_scope)
             self.py_func = DefNode(pos = self.pos, 
@@ -1393,7 +1393,7 @@ class CFuncDefNode(FuncDefNode):
 
     def analyse_expressions(self, env):
         self.analyse_default_values(env)
-        if self.overridable:
+        if self.py_func is not None:
             self.py_func.analyse_expressions(env)
 
     def generate_function_header(self, code, with_pymethdef, with_opt_args = 1, with_dispatch = 1, cname = None):

tests/bugs/missing_self_in_cpdef_method_T156.pyx → tests/errors/missing_self_in_cpdef_method_T156.pyx

@@ -3,3 +3,6 @@ cdef class B:
     cpdef b():
         pass
 
+_ERRORS = u"""
+:3:10: C method has no self argument
+"""