patch 8.1.0519: cannot save and restore the tag stack
Problem: Cannot save and restore the tag stack.
Solution: Add gettagstack() and settagstack(). (Yegappan Lakshmanan,
closes #3604)
diff --git a/src/list.c b/src/list.c
index 9a348a8..3cf6dff 100644
--- a/src/list.c
+++ b/src/list.c
@@ -86,6 +86,19 @@
}
/*
+ * list_alloc() with an ID for alloc_fail().
+ */
+ list_T *
+list_alloc_id(alloc_id_T id UNUSED)
+{
+#ifdef FEAT_EVAL
+ if (alloc_fail_id == id && alloc_does_fail((long_u)sizeof(list_T)))
+ return NULL;
+#endif
+ return (list_alloc());
+}
+
+/*
* Allocate an empty list for a return value, with reference count set.
* Returns OK or FAIL.
*/