From 6667f691460c870dfc481a19a3b7212929e75d83 Mon Sep 17 00:00:00 2001
From: Ganlin Zhao <ganlinzhao@hotmail.com>
Date: Wed, 2 Nov 2022 10:27:00 +0800
Subject: [PATCH] fix address sanitizer divide by zero error

TD-20116
---
 source/libs/function/src/builtinsimpl.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/source/libs/function/src/builtinsimpl.c b/source/libs/function/src/builtinsimpl.c
index 35ad10ffbf..3c24f1f542 100644
--- a/source/libs/function/src/builtinsimpl.c
+++ b/source/libs/function/src/builtinsimpl.c
@@ -2307,6 +2307,12 @@ int32_t leastSQRFinalize(SqlFunctionCtx* pCtx, SSDataBlock* pBlock) {
 
   double param00 = param[0][0] - param[1][0] * (param[0][1] / param[1][1]);
   double param02 = param[0][2] - param[1][2] * (param[0][1] / param[1][1]);
+
+  if (0 == param00) {
+    colDataAppendNULL(pCol, currentRow);
+    return 0;
+  }
+
   // param[0][1] = 0;
   double param12 = param[1][2] - param02 * (param[1][0] / param00);
   // param[1][0] = 0;
-- 
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