1 files changed, 12 insertions, 1 deletions
diff --git a/Python/optimizer_cases.c.h b/Python/optimizer_cases.c.h
index 1a2d49973ee..b42f47c75ea 100644
--- a/Python/optimizer_cases.c.h
+++ b/Python/optimizer_cases.c.h
@@ -568,8 +568,19 @@
         }
 
         case _BINARY_SLICE: {
+            JitOptSymbol *container;
             JitOptSymbol *res;
-            res = sym_new_not_null(ctx);
+            container = stack_pointer[-3];
+            PyTypeObject *type = sym_get_type(container);
+            if (type == &PyUnicode_Type ||
+                type == &PyList_Type ||
+                type == &PyTuple_Type)
+            {
+                res = sym_new_type(ctx, type);
+            }
+            else {
+                res = sym_new_not_null(ctx);
+            }
             stack_pointer[-3] = res;
             stack_pointer += -2;
             assert(WITHIN_STACK_BOUNDS());