c - 我不是在某处释放内存吗？

Question

我有一个程序，它从一个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);

我需要免费阅读线吗？

Answer 1

是的，strdup()动态分配您必须 free() 的内存。从链接的引用页面:

The strdup() function returns a pointer to a new string which is a duplicate of the string s. Memory for the new string is obtained with malloc(3), and can be freed with free(3).