From 54762245feee35ce6885f7443da8f8443fccd5b5 Mon Sep 17 00:00:00 2001
From: David Tardon <dtardon@redhat.com>
Date: Wed, 26 May 2021 20:39:41 +0200
Subject: [PATCH] allow 0-size message

It likely means the input is broken, but there is no need to reject it.
Let's just produce a dummy, empty message.

Change-Id: I03a1e9827f21f6a0ce69d7e16dfcf2e9a0f2d44f
---
 src/lib/IWAMessage.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/lib/IWAMessage.cpp b/src/lib/IWAMessage.cpp
index c01b1b6..9456444 100644
--- a/src/lib/IWAMessage.cpp
+++ b/src/lib/IWAMessage.cpp
@@ -42,7 +42,8 @@ IWAMessage::IWAMessage(const RVNGInputStreamPtr_t &input, unsigned long length)
   : m_input(input)
   , m_fields()
 {
-  assert(length > 0);
+  if (length == 0)
+    return;
 
   parse(length);
 }
-- 
2.31.1