Question

我正在运行代码，我遇到错误

*检测到glibc * /home/build/bin/../bin/OPENSUSE_12.2_X86_64/reader：已损坏双链表：0x0000000003df6dc0 *

我尝试通过valgrind重新运行它，以了解是否存在任何内存泄漏问题。我把它作为

运行

valgrind --leak-check = full -v ./myprog

由于程序没有完成并且停止了valgrind摘要如下：

>     ==5335== Process terminating with default action of signal 2 (SIGINT)
>     ==5335==    at 0x54E4007: kill (in /lib64/libc-2.15.so)
>     ==5335==    by 0x429473: ??? (in /bin/bash)
>     ==5335==    by 0x42A313: wait_for (in /bin/bash)
>     ==5335==    by 0x462BFE: execute_command_internal (in /bin/bash)
>     ==5335==    by 0x463360: execute_command (in /bin/bash)
>     ==5335==    by 0x41B7F0: reader_loop (in /bin/bash)
>     ==5335==    by 0x41B4C9: main (in /bin/bash)
>     ==5335== 
>     ==5335== HEAP SUMMARY:
>     ==5335==     in use at exit: 37,513 bytes in 1,074 blocks
>     ==5335==   total heap usage: 1,922 allocs, 848 frees, 72,605 bytes allocated
>     ==5335== 
>     ==5335== Searching for pointers to 1,074 not-freed blocks
>     ==5335== Checked 220,224 bytes
>     ==5335== 
>     ==5335== LEAK SUMMARY:
>     ==5335==    definitely lost: 0 bytes in 0 blocks
>     ==5335==    indirectly lost: 0 bytes in 0 blocks
>     ==5335==      possibly lost: 0 bytes in 0 blocks
>     ==5335==    still reachable: 37,513 bytes in 1,074 blocks
>     ==5335==         suppressed: 0 bytes in 0 blocks
>     ==5335== Reachable blocks (those to which a pointer was found) are not shown.
>     ==5335== To see them, rerun with: --leak-check=full --show-reachable=yes
>     ==5335== 
>     ==5335== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 2 from 2)
>     --5335-- 
>     --5335-- used_suppression:      2 dl-hack3-cond-1
>     ==5335== 
>     ==5335== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 2 from 2)

总堆使用中的

：1,922个分配，848个释放，我想知道这里是否有任何问题？但在错误摘要中没有错误。我想知道我是否应该关注代码或内存泄漏中的任何问题？

Answer 1

这个摘要基本上意味着你没有先释放相关的已分配内存，也没有丢弃任何指针（将它们设置为NULL）。当程序退出时，任何已分配的内存（无论是否泄露）都将被释放。但是，你是对的 - 你没有泄漏任何内存，所以如果你的程序运行了很长一段时间，你就不会用完堆空间。

理想情况下，您仍应尝试自行清理 - 查找malloc次来电，而不进行任何相应的free来电。

Valgrind堆汇总理解

1 个答案: