From 983479887bbfdd668278199781cb4ab930861eac Mon Sep 17 00:00:00 2001
From: Jinbo Wang <jinbwan@microsoft.com>
Date: Fri, 16 Aug 2024 13:14:34 +0800
Subject: [PATCH] Fix NPE when hovering at the keyword 'void'

---
 .../org/eclipse/jdt/internal/codeassist/DOMCodeSelector.java   | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/org.eclipse.jdt.core/codeassist/org/eclipse/jdt/internal/codeassist/DOMCodeSelector.java b/org.eclipse.jdt.core/codeassist/org/eclipse/jdt/internal/codeassist/DOMCodeSelector.java
index 1c9e17449bb..c527f5f30d4 100644
--- a/org.eclipse.jdt.core/codeassist/org/eclipse/jdt/internal/codeassist/DOMCodeSelector.java
+++ b/org.eclipse.jdt.core/codeassist/org/eclipse/jdt/internal/codeassist/DOMCodeSelector.java
@@ -605,6 +605,9 @@ private static boolean matchSignatures(IMethodBinding invocation, IMethodBinding
 	}
 
 	private IJavaElement[] findTypeInIndex(String packageName, String simpleName) throws JavaModelException {
+		if (simpleName == null) {
+			return new IJavaElement[0];
+		}
 		List<IType> indexMatch = new ArrayList<>();
 		TypeNameMatchRequestor requestor = new TypeNameMatchRequestor() {
 			@Override