curl curl_global_init 内存泄漏答案

【问题标题】：curl curl_global_init memory leakcurl curl_global_init 内存泄漏
【发布时间】：2014-12-09 09:16:11
【问题描述】：

#include <curl/curl.h>
#include <mcheck.h>

int main(int argc, char** argv) 
{   
    setenv("MALLOC_TRACE", "output", 1);
    mtrace();
    curl_global_init(CURL_GLOBAL_ALL);
    curl_global_cleanup();
    return 0;
}

gcc -o test test.c -lcurl

./测试

mtrace 输出

 - 0x000000000154f010 Free 6293 was never alloc'd 0x7f9a4e515256
 - 0x000000000154f040 Free 6294 was never alloc'd 0x7f9a4e4a299d
 - 0x000000000154f060 Free 6295 was never alloc'd 0x7f9a4e51540c

 Memory not freed:

Address     Size     Caller

0x000000000154f830    0x258  at 0x7f9a4d303134

0x000000000154fa90     0xb0  at 0x7f9a4d303134

0x000000000154fb50     0x80  at 0x7f9a4d303134

0x000000000154fbe0     0x18  at 0x7f9a4d303134

0x0000000001568ca0     0x20  at 0x7f9a4d303134

0x0000000001568cd0     0x20  at 0x7f9a4d303134

什么可能导致这种内存泄漏？

【问题讨论】：

标签： curl mtrace

【解决方案1】：

迟到的答案，但我自己也遇到了同样的问题。如果 libcurl 与 openssl 支持链接，您必须手动释放 openssl 资源。

#include "openssl/conf.h"
#include "openssl/err.h"
#include "openssl/engine.h"
#include "openssl\ssl.h"

CONF_modules_free();
ERR_remove_state(0);
ENGINE_cleanup();
CONF_modules_unload(1);
ERR_free_strings();
EVP_cleanup();
CRYPTO_cleanup_all_ex_data();
sk_SSL_COMP_free(SSL_COMP_get_compression_methods());

帮我搞定了

【讨论】：