From 90036d6d8ab92ccacf11aa975709182452f6eb20 Mon Sep 17 00:00:00 2001
From: Max Horn
Date: Tue, 21 Jun 2005 16:45:18 +0000
Subject: Patch #1224631 (fix gcc4 virtual functions non-virtual destructor
 warnings)

svn-id: r18424
---
 scumm/instrument.h    | 1 +
 scumm/player_v2a.cpp  | 2 +-
 sky/music/musicbase.h | 1 +
 3 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/scumm/instrument.h b/scumm/instrument.h
index cd2cfacbc6..9e0c397b55 100644
--- a/scumm/instrument.h
+++ b/scumm/instrument.h
@@ -34,6 +34,7 @@ class Instrument;
 
 class InstrumentInternal {
 public:
+	virtual ~InstrumentInternal() {};
 	virtual void saveOrLoad (Serializer *s) = 0;
 	virtual void send (MidiChannel *mc) = 0;
 	virtual void copy_to (Instrument *dest) = 0;
diff --git a/scumm/player_v2a.cpp b/scumm/player_v2a.cpp
index 4381c5bcc7..f913295e8e 100644
--- a/scumm/player_v2a.cpp
+++ b/scumm/player_v2a.cpp
@@ -62,7 +62,7 @@ static uint32 GetCRC (byte *data, int len)
 class V2A_Sound {
 public:
 	V2A_Sound() : _id(0), _mod(NULL) { }
-
+	virtual ~V2A_Sound() {};
 	virtual void start(Player_MOD *mod, int id, const byte *data) = 0;
 	virtual bool update() = 0;
 	virtual void stop() = 0;
diff --git a/sky/music/musicbase.h b/sky/music/musicbase.h
index 40785c7cfd..59ba5ec7cd 100644
--- a/sky/music/musicbase.h
+++ b/sky/music/musicbase.h
@@ -39,6 +39,7 @@ typedef struct {
 
 class ChannelBase {
 public:
+	virtual ~ChannelBase() {};
 	virtual void stopNote(void) = 0;
 	virtual uint8 process(uint16 aktTime) = 0;
 	virtual void updateVolume(uint16 pVolume) = 0;
-- 
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