From 82ca3aa281a346c455eeb89130f28ca46a668447 Mon Sep 17 00:00:00 2001
From: Max Kellermann <max@musicpd.org>
Date: Wed, 8 May 2019 16:24:31 +0200
Subject: [PATCH] time/ISO8601: forward-declare StringBuffer

---
 src/song/ModifiedSinceSongFilter.cxx | 1 +
 src/time/ISO8601.cxx                 | 3 ++-
 src/time/ISO8601.hxx                 | 6 ++++--
 3 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/src/song/ModifiedSinceSongFilter.cxx b/src/song/ModifiedSinceSongFilter.cxx
index e490bce8a..b26ebbf28 100644
--- a/src/song/ModifiedSinceSongFilter.cxx
+++ b/src/song/ModifiedSinceSongFilter.cxx
@@ -20,6 +20,7 @@
 #include "ModifiedSinceSongFilter.hxx"
 #include "LightSong.hxx"
 #include "time/ISO8601.hxx"
+#include "util/StringBuffer.hxx"
 
 std::string
 ModifiedSinceSongFilter::ToExpression() const noexcept
diff --git a/src/time/ISO8601.cxx b/src/time/ISO8601.cxx
index b9ce08361..fb6d32899 100644
--- a/src/time/ISO8601.cxx
+++ b/src/time/ISO8601.cxx
@@ -1,5 +1,5 @@
 /*
- * Copyright 2007-2017 Content Management AG
+ * Copyright 2007-2019 Content Management AG
  * All rights reserved.
  *
  * author: Max Kellermann <mk@cm4all.com>
@@ -33,6 +33,7 @@
 #include "ISO8601.hxx"
 #include "Convert.hxx"
 #include "Parser.hxx"
+#include "util/StringBuffer.hxx"
 
 StringBuffer<64>
 FormatISO8601(const struct tm &tm) noexcept
diff --git a/src/time/ISO8601.hxx b/src/time/ISO8601.hxx
index 10a171d26..1e13f17be 100644
--- a/src/time/ISO8601.hxx
+++ b/src/time/ISO8601.hxx
@@ -1,5 +1,5 @@
 /*
- * Copyright 2007-2017 Content Management AG
+ * Copyright 2007-2019 Content Management AG
  * All rights reserved.
  *
  * author: Max Kellermann <mk@cm4all.com>
@@ -33,13 +33,15 @@
 #ifndef TIME_ISO8601_HXX
 #define TIME_ISO8601_HXX
 
-#include "util/StringBuffer.hxx"
 #include "util/Compiler.h"
 
 #include <string>
 #include <chrono>
 
+#include <stddef.h>
+
 struct tm;
+template<size_t CAPACITY> class StringBuffer;
 
 gcc_pure
 StringBuffer<64>