From dad3f0607bf1c864f80723ab20b39527260f2c4f Mon Sep 17 00:00:00 2001
From: René Scharfe <l.s.r@web.de>
Date: Thu, 5 Sep 2019 21:55:55 +0200
Subject: tag: factor out get_tagged_oid()
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Add a function for accessing the ID of the object referenced by a tag
safely, i.e. without causing a segfault when encountering a broken tag
where ->tagged is NULL.

Signed-off-by: René Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
 tag.c | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'tag.c')

diff --git a/tag.c b/tag.c
index 5db870edb9..bfa0e31435 100644
--- a/tag.c
+++ b/tag.c
@@ -212,3 +212,10 @@ int parse_tag(struct tag *item)
 	free(data);
 	return ret;
 }
+
+struct object_id *get_tagged_oid(struct tag *tag)
+{
+	if (!tag->tagged)
+		die("bad tag");
+	return &tag->tagged->oid;
+}
-- 
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