Implement PyErr::is_instance_bound

src/err/mod.rs

@@ -566,23 +566,37 @@ impl PyErr {
     where
         T: ToPyObject,
     {
-        self.is_instance(py, exc.to_object(py).as_ref(py))
+        self.is_instance_bound(py, exc.to_object(py).bind(py).clone())
     }
 
-    /// Returns true if the current exception is instance of `T`.
+    /// Deprecated form of `PyErr::is_instance_bound`.
+    #[cfg_attr(
+        not(feature = "gil-refs"),
+        deprecated(
+            since = "0.21.0",
+            note = "`PyErr::is_instance` will be replaced by `PyErr::is_instance_bound` in a future PyO3 version"
+        )
+    )]
     #[inline]
     pub fn is_instance(&self, py: Python<'_>, ty: &PyAny) -> bool {
         let type_bound = self.get_type_bound(py);
         (unsafe { ffi::PyErr_GivenExceptionMatches(type_bound.as_ptr(), ty.as_ptr()) }) != 0
     }
 
+    /// Returns true if the current exception is instance of `T`.
+    #[inline]
+    pub fn is_instance_bound(&self, py: Python<'_>, ty: Bound<'_, PyAny>) -> bool {
+        let type_bound = self.get_type_bound(py);
+        (unsafe { ffi::PyErr_GivenExceptionMatches(type_bound.as_ptr(), ty.as_ptr()) }) != 0
+    }
+
     /// Returns true if the current exception is instance of `T`.
     #[inline]
     pub fn is_instance_of<T>(&self, py: Python<'_>) -> bool
     where
         T: PyTypeInfo,
     {
-        self.is_instance(py, T::type_object_bound(py).as_gil_ref())
+        self.is_instance_bound(py, T::type_object_bound(py).as_any().clone())
     }
 
     /// Writes the error back to the Python interpreter's global state.