valgrind shows an error in ex_lange_result_set test. about libsnowflakeclient HOT 3 CLOSED

--run-libc-freeres=no

#include <pthread.h>
#include <stdio.h>
#include <errno.h>
#include <stdlib.h>
#include <unistd.h>

static void *chunk_downloader_thread(void *downloader) {
    printf("STARTING thread \n");
    printf("EXITING thread...\n");
    sleep(1);
    return NULL;
}
int main() {
    pthread_t t;
    printf("create: %d\n", pthread_create(&t, NULL, &chunk_downloader_thread, (void*)NULL));
    printf("join: %d\n", pthread_join(t, NULL));
    exit(0);
}

gcc -pthread test_simple_thread.c
valgrind --tool=memcheck --leak-check=full --run-libc-freeres=no ./a.out

==24498== Memcheck, a memory error detector
==24498== Copyright (C) 2002-2012, and GNU GPL'd, by Julian Seward et al.
==24498== Using Valgrind-3.8.1 and LibVEX; rerun with -h for copyright info
==24498== Command: ./a.out
==24498== 
create: 0
STARTING thread 
EXITING thread...
join: 0
==24498== 
==24498== HEAP SUMMARY:
==24498==     in use at exit: 560 bytes in 1 blocks
==24498==   total heap usage: 1 allocs, 0 frees, 560 bytes allocated
==24498== 
==24498== 560 bytes in 1 blocks are possibly lost in loss record 1 of 1
==24498==    at 0x4A057BB: calloc (vg_replace_malloc.c:593)
==24498==    by 0x39D3811D02: _dl_allocate_tls (in /lib64/ld-2.12.so)
==24498==    by 0x39D44072CC: pthread_create@@GLIBC_2.2.5 (in /lib64/libpthread-2.12.so)
==24498==    by 0x4006E7: main (in /home/stakeda/test_cpp/a.out)
==24498== 
==24498== LEAK SUMMARY:
==24498==    definitely lost: 0 bytes in 0 blocks
==24498==    indirectly lost: 0 bytes in 0 blocks
==24498==      possibly lost: 560 bytes in 1 blocks
==24498==    still reachable: 0 bytes in 0 blocks
==24498==         suppressed: 0 bytes in 0 blocks
==24498== 
==24498== For counts of detected and suppressed errors, rerun with: -v
==24498== ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 8 from 6)