From 01a3daa396806d26ef05e474e6f2e3bdbc9b97a8 Mon Sep 17 00:00:00 2001
From: Ollie Ferns <ollie@nlsltd.com>
Date: Fri, 28 Feb 2020 19:20:02 +0000
Subject: [PATCH] Added a null check and a call to read in the pre method to
 deal with streams that have not started to be read yet

---
 Utf8JsonStreamReader/Utf8JsonStreamReader.cs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Utf8JsonStreamReader/Utf8JsonStreamReader.cs b/Utf8JsonStreamReader/Utf8JsonStreamReader.cs
index d2602c2..e8383b8 100644
--- a/Utf8JsonStreamReader/Utf8JsonStreamReader.cs
+++ b/Utf8JsonStreamReader/Utf8JsonStreamReader.cs
@@ -131,6 +131,10 @@ private long DeserialisePre(out SequenceSegment? firstSegment, out int firstSegm
             firstSegment = _firstSegment;
             firstSegmentStartIndex = _firstSegmentStartIndex;
 
+            if (firstSegment is null && this.Read()) {
+                return DeserialisePre(out firstSegment, out firstSegmentStartIndex);
+            }
+
             // loop through data until end of object is found
             _keepBuffers = true;
             int depth = 0;