Require c++0x for unique_ptr.

Cython/Compiler/ModuleNode.py

@@ -905,7 +905,8 @@ class ModuleNode(Nodes.Node, Nodes.BlockNode):
                 if constructor:
                     arg_decls = []
                     arg_names = []
-                    for arg in constructor.type.original_args[:len(constructor.type.args)-constructor.type.optional_arg_count]:
+                    for arg in constructor.type.original_args[
+                            :len(constructor.type.args)-constructor.type.optional_arg_count]:
                         arg_decls.append(arg.declaration_code())
                         arg_names.append(arg.cname)
                     if constructor.type.optional_arg_count:

tests/run/cpp_classes_def.pyx

 # mode: run
 # tag: cpp, werror
 # cython: experimental_cpp_class_def=True
+# distutils: extra_compile_args=-std=c++0x
 
 cdef double pi
 from math import pi