From 0e8967f5ed318d51d3be92d970f78dafaee3b2f9 Mon Sep 17 00:00:00 2001
From: Jonathan Hui <jonhui@nestlabs.com>
Date: Thu, 31 Jan 2019 08:48:44 -0800
Subject: [PATCH] [fuzz] disable HDLC FCS check during fuzz tests (#3536)

---
 src/ncp/hdlc.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/ncp/hdlc.cpp b/src/ncp/hdlc.cpp
index 000458b56..47a91bc0a 100644
--- a/src/ncp/hdlc.cpp
+++ b/src/ncp/hdlc.cpp
@@ -242,7 +242,11 @@ void Decoder::Decode(const uint8_t *aData, uint16_t aLength)
                 {
                     otError error = OT_ERROR_PARSE;
 
-                    if ((mDecodedLength >= kFcsSize) && (mFcs == kGoodFcs))
+                    if ((mDecodedLength >= kFcsSize)
+#ifndef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION
+                        && (mFcs == kGoodFcs)
+#endif
+                    )
                     {
                         // Remove the FCS from the frame.
                         mWritePointer.UndoLastWrites(kFcsSize);