Question

我的程序中有轻微的内存泄漏，我不确定它是在我的allocs还是在内部c结构中。我正在使用的唯一的mallocs是：

results = (int*) malloc (instance_n * sizeof (int) );

instances = (char**) malloc (instance_n * sizeof (char*) );
for (i = 0; i < instance_n; i++) {
  instances[i] = (char*) malloc (1001 * sizeof (char) );
}

List_add (); (standard doubly linked list. Never gave me a problem)

我在同一个地方释放所有东西：

free (results);
List_clear (&dynamic);
for (i = 0; i < instance_n; i++) {
  free (instances[i]);
}
free (instances);

BTW：List_clear =

Node* node = list->last;
if (node == NULL) return;

while (node->previous != NULL)
  {
    node = node->previous;
    free (node->next);
  }
free (list->first);

此外，我正在使用timeval和FILE结构（文件在方法结束时被删除）

我错过了什么吗？对我来说，我肯定看起来像是在释放一切。我从来没有遇到过内存泄漏问题所以我调试它很糟糕，但Valgrind一直指出这个内存泄漏：

==3180== HEAP SUMMARY:
==3180==     in use at exit: 62,951 bytes in 361 blocks
==3180==   total heap usage: 556 allocs, 195 frees, 115,749 bytes allocated
==3180== 
==3180== LEAK SUMMARY:
==3180==    definitely lost: 8,624 bytes in 14 blocks
==3180==    indirectly lost: 1,168 bytes in 5 blocks
==3180==      possibly lost: 4,925 bytes in 68 blocks
==3180==    still reachable: 48,234 bytes in 274 blocks
==3180==         suppressed: 0 bytes in 0 blocks
==3180== Rerun with --leak-check=full to see details of leaked memory
==3180==

我不禁注意到“14块”部分，但我的代码中没有一部分分配少于20个部分，而8624字节是4字节的倍数，所以它很可能是整数泄漏。

提前致谢

Answer 1

我刚刚在valgrind上找到了这个条款：

==3821== WARNING: Support on MacOS 10.8 is experimental and mostly broken.
==3821== WARNING: Expect incorrect results, assertions and crashes.
==3821== WARNING: In particular, Memcheck on 32-bit programs will fail to
==3821== WARNING: detect any errors associated with heap-allocated data.

其他一些人在MacOSX 10.8上得到了相同的8624字节泄漏，所以我猜这是误报。

C复杂的内存泄漏

1 个答案: