[cs631apue] memory leak error I can't seem to find

[Benjamin Iofel]

This is due to some invalid memory writes to the heap.

~ Ben

On Wed, Oct 3, 2018 at 6:56 AM, Marlon Seaton <mseaton at stevens.edu> wrote:

> Good morning,
>
> I am have the following memory error: Error in `./ls': corrupted size vs.
> prev_size: Can't seem to figure out why, but I believe it may have to do
> with how I am trying to allocate an array of pointers to strings. I guess
> my question is could the following code snippet potentially cause the
> problem that I am having?
>
>
> Here's the code below:
>
> pfilenames = malloc((numfiles + 1) * sizeof(char*));
>    if(pfilenames == NULL)
>    {
>        perror("malloc failed\n");
>        exit(EXIT_FAILURE);
>    }
>
> pfilenames[i] = malloc( (strlen(direntptr->d_name) + 1) * sizeof(char));
>          if(pfilenames[i] == NULL)
>          {
>               perror("malloc failed\n");
>                exit(EXIT_FAILURE);
>          }
>
>          strcpy(pfilenames[i], direntptr->d_name);
>          i++;
>  numfiles is the number of files in the directory. I keep a running total
> of this as I am reading the files in the directory.
>
>
> Thank you.
>
> Marlon
>
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