DefaultHistory: check index range before getting record, fixes #450

jline · Oct 18, 2019 · 6116228 · 6116228
1 parent 6cc5943
commit 6116228
Showing 1 changed file with 5 additions and 1 deletion.
diff --git a/reader/src/main/java/org/jline/reader/impl/history/DefaultHistory.java b/reader/src/main/java/org/jline/reader/impl/history/DefaultHistory.java
@@ -344,7 +344,11 @@ private String format(Entry entry) {
     }
 
     public String get(final int index) {
-        return items.get(index - offset).line();
+        int idx = index - offset;
+        if (idx >= items.size() || idx < 0) {
+            throw new IllegalArgumentException("IndexOutOfBounds: Index:" + idx +", Size:" + items.size());
+        }
+        return items.get(idx).line();
     }
 
     @Override