From 7d079aa08995fcdea523721b8cdaa3c5c5d862f1 Mon Sep 17 00:00:00 2001
From: Daniel Cameron <d-cameron@github.com>
Date: Fri, 4 Feb 2022 14:06:03 +1100
Subject: [PATCH] Fixed NPE

---
 src/main/java/au/edu/wehi/idsv/DirectedEvidenceOrder.java | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/main/java/au/edu/wehi/idsv/DirectedEvidenceOrder.java b/src/main/java/au/edu/wehi/idsv/DirectedEvidenceOrder.java
index 5d0c9589..ee34606e 100644
--- a/src/main/java/au/edu/wehi/idsv/DirectedEvidenceOrder.java
+++ b/src/main/java/au/edu/wehi/idsv/DirectedEvidenceOrder.java
@@ -41,8 +41,10 @@ public int compare(DirectedEvidence arg1, DirectedEvidence arg2) {
 			        .compare(arg1_nominal2, arg2_nominal2)
 			        .result();
 			if (cmp != 0) return cmp;
-			cmp = BySAMStart.compare(arg1, arg2);
-			if (cmp != 0) return cmp;
+			if (arg1.getUnderlyingSAMRecord() != null && arg2.getUnderlyingSAMRecord() != null) {
+				cmp = BySAMStart.compare(arg1, arg2);
+				if (cmp != 0) return cmp;
+			}
 			return arg1.getEvidenceID().compareTo(arg2.getEvidenceID());
 		}
 	};