From c8e6f50d55ac0802a9188c3b4e8948a01ca4ad0d Mon Sep 17 00:00:00 2001
From: Max Kellermann <max@musicpd.org>
Date: Wed, 25 Jul 2018 00:01:39 +0200
Subject: [PATCH] input/buffered: fix bogus offset after Seek()

Instead of copying the offset from our `input`, copy the requested
offset to our `offset` attribute.

By the time Seek() finishes, our input's offset may have advanced
already, having read some more data, thus giving us a bogus offset.

This fixes spurious decoder failues (closes #320).
---
 src/input/BufferedInputStream.cxx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/input/BufferedInputStream.cxx b/src/input/BufferedInputStream.cxx
index c0b6e0783..1aa5fa09c 100644
--- a/src/input/BufferedInputStream.cxx
+++ b/src/input/BufferedInputStream.cxx
@@ -85,7 +85,7 @@ BufferedInputStream::Seek(offset_type new_offset)
 	if (seek_error)
 		std::rethrow_exception(std::exchange(seek_error, {}));
 
-	offset = input->GetOffset();
+	offset = new_offset;
 }
 
 bool