@@ -0,0 +1 @@
+``del list[index]`` now triggers shrinking the list's internal array.
@@ -1182,7 +1182,7 @@ list_ass_item_lock_held(PyListObject *a, Py_ssize_t i, PyObject *v)
         if (i < size - 1) {
             list_shift_items_left_lock_held(a, i, size - 1);
         }
-        Py_SET_SIZE(a, size - 1);
+        list_resize(a, size - 1);  // NB: shrinking a list can't fail
     }
     else {
         FT_ATOMIC_STORE_PTR_RELEASE(a->ob_item[i], Py_NewRef(v));
Original file line number	Diff line number	Diff line change
`@@ -0,0 +1 @@`
	`1`	+``del list[index]`` now triggers shrinking the list's internal array.
Original file line number	Diff line number	Diff line change
`@@ -1182,7 +1182,7 @@ list_ass_item_lock_held(PyListObject a, Py_ssize_t i, PyObject v)`
`1182`	`1182`	`if (i < size - 1) {`
`1183`	`1183`	`list_shift_items_left_lock_held(a, i, size - 1);`
`1184`	`1184`	`}`
`1185`		`- Py_SET_SIZE(a, size - 1);`
	`1185`	`+ list_resize(a, size - 1); // NB: shrinking a list can't fail`
`1186`	`1186`	`}`
`1187`	`1187`	`else {`
`1188`	`1188`	`FT_ATOMIC_STORE_PTR_RELEASE(a->ob_item[i], Py_NewRef(v));`