From bc5975b86ee34a4784dc38f37028ea783dfa45da Mon Sep 17 00:00:00 2001
From: Eric Biggers <ebiggers3@gmail.com>
Date: Sat, 30 May 2015 15:48:06 -0500
Subject: [PATCH] write.c: handle empty buffers in
 write_wim_resource_from_buffer()

---
 src/write.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/write.c b/src/write.c
index d0ede8bb..5bd8db91 100644
--- a/src/write.c
+++ b/src/write.c
@@ -1747,6 +1747,13 @@ write_wim_resource_from_buffer(const void *buf,
 	int ret;
 	struct blob_descriptor blob;
 
+	if (unlikely(buf_size == 0)) {
+		zero_reshdr(out_reshdr);
+		if (hash_ret)
+			copy_hash(hash_ret, zero_hash);
+		return 0;
+	}
+
 	blob_set_is_located_in_attached_buffer(&blob, (void *)buf, buf_size);
 	sha1_buffer(buf, buf_size, blob.hash);
 	blob.unhashed = 0;
-- 
2.43.0