SSL_library_init调用load_builtin_compressions,但在最终释放openssl环境时,没有提供释放的方法,会导致内存泄露。
==30378==
==30378== HEAP SUMMARY:
==30378== in use at exit: 1,704 bytes in 3 blocks
==30378== total heap usage: 5,704 allocs, 5,701 frees, 1,563,697 bytes allocated
==30378==
==30378== 32 bytes in 1 blocks are still reachable in loss record 1 of 3
==30378== at 0x4C29EA3: malloc (vg_replace_malloc.c:309)
==30378== by 0x57739F7: CRYPTO_malloc (mem.c:351)
==30378== by 0x57A319E: sk_new (stack.c:162)
==30378== by 0x574ADF2: load_builtin_compressions (ssl_ciph.c:521)
==30378== by 0x574ADF2: SSL_COMP_get_compression_methods (ssl_ciph.c:2049)
==30378== by 0x575108E: SSL_library_init (ssl_algs.c:160)
解决方法如下
在\ssl\ssl_ciph.c最下增加如下代码,然后释放openssl资源时,调用SSL_free_compressions即可:
#ifndef OPENSSL_NO_COMP
// add by qsy;
void SSL_free_compressions(void) __attribute__ ((destructor));
void SSL_free_compressions(void)
{
if (ssl_comp_methods != NULL)
{
sk_SSL_COMP_free(ssl_comp_methods);
ssl_comp_methods = NULL;
}
}
#endif