From e0a5ae459c03db7e4413873c1fe149cfcf7c71f0 Mon Sep 17 00:00:00 2001
From: dapan1121 <89396746@qq.com>
Date: Tue, 19 Jan 2021 15:23:43 -1000
Subject: [PATCH] fix bug

---
 src/os/src/detail/osTime.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/os/src/detail/osTime.c b/src/os/src/detail/osTime.c
index 1710c469fb..d6877790a8 100644
--- a/src/os/src/detail/osTime.c
+++ b/src/os/src/detail/osTime.c
@@ -504,13 +504,13 @@ int64_t taosTimeTruncate(int64_t t, const SInterval* pInterval, int32_t precisio
     int64_t end = 0;
 
     // not enough time range
-    if (INT64_MAX - start > pInterval->interval - 1) {
+    if (start < 0 || INT64_MAX - start > pInterval->interval - 1) {
       end = start + pInterval->interval - 1;
 
       while(end < t && ((start + pInterval->sliding) <= INT64_MAX)) { // move forward to the correct time window
         start += pInterval->sliding;
 
-        if (INT64_MAX - start > pInterval->interval - 1) {
+        if (start < 0 || INT64_MAX - start > pInterval->interval - 1) {
           end = start + pInterval->interval - 1;
         } else {
           end = INT64_MAX;