1 files changed, 16 insertions, 1 deletions
diff --git a/Python/specialize.c b/Python/specialize.c
index 214f297..4070d6a 100644
--- a/Python/specialize.c
+++ b/Python/specialize.c
@@ -572,6 +572,10 @@ initial_counter_value(void) {
 #define SPEC_FAIL_ITER_DICT_VALUES 22
 #define SPEC_FAIL_ITER_ENUMERATE 23
 
+/* UNPACK_SEQUENCE */
+#define SPEC_FAIL_TUPLE 10
+#define SPEC_FAIL_LIST 11
+
 
 static int
 specialize_module_load_attr(
@@ -1880,7 +1884,6 @@ success:
     adaptive->counter = initial_counter_value();
 }
 
-
 int
  _PySpecialization_ClassifyIterator(PyObject *iter)
 {
@@ -1930,3 +1933,15 @@ int
     }
     return SPEC_FAIL_OTHER;
 }
+
+int
+_PySpecialization_ClassifySequence(PyObject *seq)
+{
+    if (PyTuple_CheckExact(seq)) {
+        return SPEC_FAIL_TUPLE;
+    }
+    if (PyList_CheckExact(seq)) {
+        return SPEC_FAIL_LIST;
+    }
+    return SPEC_FAIL_OTHER;
+}