From 6e167a347bc186b1f8cab988a73dba194c0eb400 Mon Sep 17 00:00:00 2001
From: xsren <285808407@qq.com>
Date: Sat, 14 Sep 2024 13:53:26 +0800
Subject: [PATCH] fix: check conv

---
 source/os/src/osString.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/source/os/src/osString.c b/source/os/src/osString.c
index d3393f930f..68392b5050 100644
--- a/source/os/src/osString.c
+++ b/source/os/src/osString.c
@@ -289,7 +289,11 @@ iconv_t taosAcquireConv(int32_t *idx, ConvType type) {
   }
 
   *idx = startId;
-  return gConv[type][startId].conv;
+  if ((iconv_t)0 == gConv[type][startId].conv) {
+    return (iconv_t)-1;
+  } else {
+    return gConv[type][startId].conv;
+  }
 }
 
 void taosReleaseConv(int32_t idx, iconv_t conv, ConvType type) {