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-rw-r--r--src/base.cpp5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/base.cpp b/src/base.cpp
index 235bedbf..79ad0655 100644
--- a/src/base.cpp
+++ b/src/base.cpp
@@ -96,6 +96,11 @@ const string CRLF = "\r\n";
const string SUPPORTED_MIME_VERSION = "1.0";
+/** Null reference.
+ */
+const null_ref null = null_ref();
+
+
// Line length limits
namespace lineLengthLimits
{