commit 35d78434cbbc206a0ccede1566a33cd8dd3c7bd1
author Gary Gregory <gardgregory@gmail.com> Tue Jul 06 11:29:24 2021 -0400
committer Gary Gregory <gardgregory@gmail.com> Tue Jul 06 11:29:24 2021 -0400
tree e2f79eb54b48855cbd2cc9fab8b9bd00314cfcd6
parent 4654ca291f017323f04e547936b70949e2faf8b3

Fix IndexOutOfBoundsException in IOExceptionList contructors.

src/main/java/org/apache/commons/io/IOExceptionList.java

diff --git a/src/main/java/org/apache/commons/io/IOExceptionList.java b/src/main/java/org/apache/commons/io/IOExceptionList.java
index 6bc6cc2..d4dc326 100644
--- a/src/main/java/org/apache/commons/io/IOExceptionList.java
+++ b/src/main/java/org/apache/commons/io/IOExceptionList.java
@@ -52,7 +52,7 @@ public IOExceptionList(final List<? extends Throwable> causeList) {
      * @since 2.9.0
      */
     public IOExceptionList(final String message, final List<? extends Throwable> causeList) {
-        super(message, causeList == null ? null : causeList.get(0));
+        super(message, causeList == null || causeList.isEmpty() ? null : causeList.get(0));
         this.causeList = causeList == null ? Collections.emptyList() : causeList;
     }
 

src/test/java/org/apache/commons/io/IOExceptionListTestCase.java

diff --git a/src/test/java/org/apache/commons/io/IOExceptionListTestCase.java b/src/test/java/org/apache/commons/io/IOExceptionListTestCase.java
index d001d14..9a13bc6 100644
--- a/src/test/java/org/apache/commons/io/IOExceptionListTestCase.java
+++ b/src/test/java/org/apache/commons/io/IOExceptionListTestCase.java
@@ -50,6 +50,12 @@ public void testCause() {
     }
 
     @Test
+    public void testEmptyList() {
+        new IOExceptionList(Collections.emptyList());
+        new IOExceptionList("foo", Collections.emptyList());
+    }
+
+    @Test
     public void testMessageCause() {
         final EOFException cause = new EOFException();
         final List<EOFException> list = Collections.singletonList(cause);