Fix for Windows

Author: mrkn

ext/pycall/ruby_wrapper.c

@@ -356,11 +356,16 @@ PyRuby_getattro_with_gvl(PyRubyObject *pyro, PyObject *pyobj_name)
 
 VALUE cPyRubyPtr;
 
-const rb_data_type_t pycall_pyrubyptr_data_type = {
+static rb_data_type_t pycall_pyrubyptr_data_type = {
   "PyCall::PyRubyPtr",
   { 0, pycall_pyptr_free, pycall_pyptr_memsize, },
 #ifdef RUBY_TYPED_FREE_IMMEDIATELY
-  &pycall_pyptr_data_type, 0, RUBY_TYPED_FREE_IMMEDIATELY
+# if defined  _WIN32 && !defined __CYGWIN__
+  0,
+# else
+  &pycall_pyptr_data_type,
+# endif
+  0, RUBY_TYPED_FREE_IMMEDIATELY
 #endif
 };
 
@@ -462,6 +467,10 @@ pycall_init_ruby_wrapper(void)
 
   /* PyCall::PyRubyPtr */
 
+#if defined _WIN32 && !defined __CYGWIN__
+  pycall_pyrubyptr_data_type.parent = &pycall_pyptr_data_type;
+#endif
+
   cPyRubyPtr = rb_define_class_under(mPyCall, "PyRubyPtr", cPyPtr);
   rb_define_alloc_func(cPyRubyPtr, pycall_pyruby_allocate);
   rb_define_method(cPyRubyPtr, "__ruby_object_id__", pycall_pyruby_get_ruby_object_id, 0);