From 38ea9a9fb55b3fbb1524483488829a4d39dafd18 Mon Sep 17 00:00:00 2001
From: dotasek <david.otasek@smilecdr.com>
Date: Thu, 6 Apr 2023 13:20:40 -0400
Subject: [PATCH] Fix index out of bounds exception

---
 .../fhir/validation/instance/type/SearchParameterValidator.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/org.hl7.fhir.validation/src/main/java/org/hl7/fhir/validation/instance/type/SearchParameterValidator.java b/org.hl7.fhir.validation/src/main/java/org/hl7/fhir/validation/instance/type/SearchParameterValidator.java
index bb62255b1..0d2fb598d 100644
--- a/org.hl7.fhir.validation/src/main/java/org/hl7/fhir/validation/instance/type/SearchParameterValidator.java
+++ b/org.hl7.fhir.validation/src/main/java/org/hl7/fhir/validation/instance/type/SearchParameterValidator.java
@@ -101,7 +101,7 @@ public class SearchParameterValidator extends BaseValidator {
       pass.get(i).setOperation(Operation.Union);
       pass.get(i).setOpNext(pass.get(i+1));
     }
-    return pass.get(0).toString();
+    return pass.size() > 0 ? pass.get(0).toString() : null;
   }
 
 }