From f8c45b2a99072d32b76dc253bcf8a73dca0c5c57 Mon Sep 17 00:00:00 2001
From: Thomas Krijnen <t.krijnen@gmail.com>
Date: Wed, 17 Jun 2015 11:22:43 +0000
Subject: [PATCH] Fix serialization of binary values

---
 src/ifcparse/IfcWrite.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/ifcparse/IfcWrite.cpp b/src/ifcparse/IfcWrite.cpp
index 78124c5d20..934651d3e6 100644
--- a/src/ifcparse/IfcWrite.cpp
+++ b/src/ifcparse/IfcWrite.cpp
@@ -350,7 +350,7 @@ private:
 		oss.put('"');
 		oss << std::hex << std::setw(1);
 		unsigned c = b.size();
-		unsigned n = c % 4;
+		unsigned n = (4 - (c % 4)) & 3;
 		oss << n;
 		for (unsigned i = 0; i < c + n;) {
 			unsigned accum = 0;