From: Stefan Behnel <scoder@users.berlios.de>
Date: Wed, 9 Jan 2008 22:28:26 +0000 (+0100)
Subject: fix subclassing non-GC types like 'unicode'
X-Git-Tag: 0.9.6.14~29^2~62^2~16
X-Git-Url: http://git.tremily.us/?a=commitdiff_plain;h=3b8a1a8c77ab5445509442b0ae01733f7b171bc5;p=cython.git

fix subclassing non-GC types like 'unicode'
---

diff --git a/Cython/Compiler/ModuleNode.py b/Cython/Compiler/ModuleNode.py
index 05befd1b..758546da 100644
--- a/Cython/Compiler/ModuleNode.py
+++ b/Cython/Compiler/ModuleNode.py
@@ -723,9 +723,11 @@ class ModuleNode(Nodes.Node, Nodes.BlockNode):
         if py_attrs:
             self.generate_self_cast(scope, code)
         if base_type:
+            code.putln("if (%s->tp_traverse) {" % base_type.typeptr_cname)
             code.putln(
                     "e = %s->tp_traverse(o, v, a); if (e) return e;" %
                         base_type.typeptr_cname)
+            code.putln("}")
         for entry in py_attrs:
             var_code = "p->%s" % entry.cname
             code.putln(
@@ -756,9 +758,11 @@ class ModuleNode(Nodes.Node, Nodes.BlockNode):
         if py_attrs:
             self.generate_self_cast(scope, code)
         if base_type:
+            code.putln("if (%s->tp_clear) {" % base_type.typeptr_cname)
             code.putln(
                 "%s->tp_clear(o);" %
                     base_type.typeptr_cname)
+            code.putln("}")
         for entry in py_attrs:
             name = "p->%s" % entry.cname
             code.put_xdecref(name, entry.type)