fix ref counter for get_kwargs

Cargo.toml

@@ -24,7 +24,7 @@ pyo3cls = { path = "pyo3cls" }
 # backtrace = "0.3"
 
 [dev-dependencies]
-compiletest_rs = "*"
+#compiletest_rs = "*"
 
 [build-dependencies]
 regex = "0.2"

src/argparse.rs

@@ -100,6 +100,6 @@ pub unsafe fn get_kwargs<'p>(py: Python<'p>, ptr: *mut ffi::PyObject) -> Option<
     if ptr.is_null() {
         None
     } else {
-        Some(py.cast_from_ptr::<PyDict>(ptr))
+        Some(py.cast_from_borrowed_ptr::<PyDict>(ptr))
     }
 }

src/objects/list.rs

@@ -51,8 +51,7 @@ impl PyList {
     pub fn get_item(&self, index: isize) -> &PyObjectRef {
         unsafe {
             let ptr = ffi::PyList_GetItem(self.as_ptr(), index as Py_ssize_t);
-            let ob = PyObject::from_borrowed_ptr(self.token(), ptr);
-            self.token().track_object(ob)
+            self.token().cast_from_borrowed_ptr(ptr)
         }
     }
 

src/python.rs

@@ -391,11 +391,6 @@ impl<'p> Python<'p> {
         <T as PyDowncastFrom>::unchecked_mut_downcast_from(p)
     }
 
-    pub fn track_object(self, obj: PyObject) -> &'p PyObjectRef
-    {
-        unsafe { pythonrun::register_owned(self, obj.into_ptr()) }
-    }
-
     /// Release PyObject reference.
     #[inline]
     pub fn release<T>(self, ob: T) where T: IntoPyPointer {

tests/compile_tests.rs

@@ -1,4 +1,4 @@
-extern crate compiletest_rs as compiletest;
+//extern crate compiletest_rs as compiletest;
 
 //use std::path::PathBuf;
 //use std::env::var;

tests/test_class.rs

@@ -172,7 +172,7 @@ fn new_with_two_args() {
     assert_eq!(obj._data2, 20);
 }
 
-#[py::class(freelist=10)]
+#[py::class(freelist=2)]
 struct ClassWithFreelist{token: PyToken}
 
 #[test]
@@ -187,6 +187,9 @@ fn class_with_freelist() {
 
     let inst3 = Py::new(py, |t| ClassWithFreelist{token: t}).unwrap();
     assert_eq!(ptr, inst3.as_ptr());
+
+    let inst4 = Py::new(py, |t| ClassWithFreelist{token: t}).unwrap();
+    assert_ne!(ptr, inst4.as_ptr())
 }
 
 struct TestDropCall {