patch 8.1.0519: cannot save and restore the tag stackv8.1.0519

Problem:    Cannot save and restore the tag stack.
Solution:   Add gettagstack() and settagstack(). (Yegappan Lakshmanan,
            closes #3604)

1 files changed, 13 insertions, 0 deletions

diff --git a/src/list.c b/src/list.c
index 9a348a8a6..3cf6dff76 100644
--- a/src/list.c
+++ b/src/list.c
@@ -86,6 +86,19 @@ list_alloc(void)
 }
 
 /*
+ * 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.
  */