diff --git a/source/libs/geometry/src/geomFunc.c b/source/libs/geometry/src/geomFunc.c
index 3588bf8b7d..2ac1761737 100644
--- a/source/libs/geometry/src/geomFunc.c
+++ b/source/libs/geometry/src/geomFunc.c
@@ -67,15 +67,19 @@ int32_t doGeomFromTextFunc(const char *input, unsigned char **output) {
     return TSDB_CODE_SUCCESS;
   }
 
-  // make input as a zero ending string
-  char *end = varDataVal(input) + varDataLen(input);
-  char endValue = *end;
-  *end = 0; 
-
+  char *inputGeom = NULL;
   unsigned char *outputGeom = NULL;
   size_t size = 0;
 
-  code = doGeomFromText(varDataVal(input), &outputGeom, &size);
+  // make a zero ending string
+  inputGeom = taosMemoryCalloc(1, varDataLen(input) + 1);
+  if (inputGeom == NULL) {
+    code = TSDB_CODE_OUT_OF_MEMORY;
+    goto _exit;
+  }
+  memcpy(inputGeom, varDataVal(input), varDataLen(input));
+
+  code = doGeomFromText(inputGeom, &outputGeom, &size);
   if (code != TSDB_CODE_SUCCESS) {
     goto _exit;
   }
@@ -92,8 +96,7 @@ int32_t doGeomFromTextFunc(const char *input, unsigned char **output) {
 
 _exit:
   geosFreeBuffer(outputGeom);
-
-  *end = endValue;  //recover the input string
+  geosFreeBuffer(inputGeom);
 
   return code;
 }
diff --git a/tests/system-test/pytest.sh b/tests/system-test/pytest.sh
index dfdfc32ed0..2c95516d10 100755
--- a/tests/system-test/pytest.sh
+++ b/tests/system-test/pytest.sh
@@ -79,7 +79,8 @@ else
 
   unset LD_PRELOAD
   #export LD_PRELOAD=libasan.so.5
-  export LD_PRELOAD=$(gcc -print-file-name=libasan.so)
+  #export LD_PRELOAD=$(gcc -print-file-name=libasan.so)
+  export LD_PRELOAD="$(realpath "$(gcc -print-file-name=libasan.so)") $(realpath "$(gcc -print-file-name=libstdc++.so)")"
   echo "Preload AsanSo:" $?
 
   $* -a 2>$AsanFile
@@ -104,4 +105,4 @@ else
     echo "Execute script failure"
     exit 1
   fi
-fi
\ No newline at end of file
+fi