Question

#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

什么可能导致此内存泄漏？

Answer 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，则必须手动释放openssl ressource。

#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());

我的诀窍

curl curl_global_init内存泄漏

1 个答案: