From d57278e80f188f6f11392f2ee75454ea05c146f7 Mon Sep 17 00:00:00 2001
From: amorynan <wangqiannan@selectdb.com>
Date: Mon, 20 May 2024 10:50:02 +0800
Subject: [PATCH] fix fieldDataArray.values is nullptr when meet first empty
 array

---
 src/core/CLucene/index/SDocumentWriter.cpp | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/core/CLucene/index/SDocumentWriter.cpp b/src/core/CLucene/index/SDocumentWriter.cpp
index 4ff262f86d0..f5e33250d8f 100644
--- a/src/core/CLucene/index/SDocumentWriter.cpp
+++ b/src/core/CLucene/index/SDocumentWriter.cpp
@@ -131,7 +131,12 @@ void SDocumentsWriter<T>::ThreadState::resetCurrentFieldData(Document *doc) {
     const Document::FieldsType &docFields = *doc->getFields();
     const int32_t numDocFields = docFields.size();
 
-    if (FieldData* fp = fieldDataArray.values[0]; fp && numDocFields > 0) {
+    if (FieldData* fp = fieldDataArray.values[0]; numDocFields > 0) {
+        // maybe here fp has not been initialized
+        if (!fp) {
+            init(doc, docID+1);
+            fp = fieldDataArray.values[0];
+        }
         numFieldData = 1;
         // reset fp for new fields
         fp->fieldCount = 0;