我不是在某个地方释放记忆吗？

Question

我有一个程序从文件中读取并将项目存储在队列中然后将它们打印出来.我从valgrind得到这个:

 HEAP SUMMARY:
     in use at exit: 302 bytes in 14 blocks
   total heap usage: 30 allocs, 16 frees, 1,230 bytes allocated

 302 bytes in 14 blocks are definitely lost in loss record 1 of 1
    at 0x4A05FDE: malloc (vg_replace_malloc.c:236)
    by 0x372167FB41: strdup (strdup.c:43)
    by 0x400A6A: addtoqueue(main.c:30)
    by 0x400B5A: addfiletoqueue(main.c:45)
    by 0x400C27: main (main.c:62)

 LEAK SUMMARY:
    definitely lost: 302 bytes in 14 blocks
    indirectly lost: 0 bytes in 0 blocks
      possibly lost: 0 bytes in 0 blocks
    still reachable: 0 bytes in 0 blocks
         suppressed: 0 bytes in 0 blocks

main.c的第62行

addfiletoqueue (queue, argv[argi]);

main.c的第45行

addtoqueue (queue, file, filename);

main.c的第30行

readline = strdup (buffer);
assert (readline != NULL);
queue_add (queue, readline);

我需要免费阅读吗？

Answer 1

是的,strdup()动态分配您必须的内存free().从链接的参考页面:

strdup()函数返回一个指向新字符串的指针,该字符串是字符串s的副本.使用malloc(3)获取新字符串的内存,可以使用free(3)释放.

Answer 2

我需要免费阅读吗？

是.该手册页的strdup状态,它动态地返回值分配内存.因此,您必须free稍后在程序中的某个地方调用它.