Re: [PATCH 1/2] imap-send: fix bug causing cfg->folder being set to NULL

From: Eric Sunshine <sunshine@sunshineco.com>
Date: May 22, 2025, 19:32 UTC
Message-ID: <CAPig+cQkrwy2GBNh7OdBAzWnuSo7mVH1XFUyuB7LzJ4cMf10MQ@mail.gmail.com>
In-Reply-To: <PN3PR01MB95972EB02A873B8998F51877B899A@PN3PR01MB9597.INDPRD01.PROD.OUTLOOK.COM>

On Thu, May 22, 2025 at 3:30 PM Aditya Garg <gargaditya08@live.com> wrote:

Show 25 quoted lines

> > Not sure about server_fill_credential(), but I think this is also
> > a potential memory leak
> >
> > static int auth_cram_md5(struct imap_store *ctx, const char *prompt)
> > {
> >       int ret;
> >       char *response;
> >
> >       response = cram(prompt, ctx->cfg->user, ctx->cfg->pass);
> >
> >       ret = socket_write(&ctx->imap->buf.sock, response, strlen(response));
> >       if (ret != strlen(response))
> > +             free(response); // fix for the leak
> >               return error("IMAP error: sending response failed");
> >
> >       free(response);
> >
> >       return 0;
> > }
>
> So this change leads to:
>
>   imap-send.c:990:2: error: code will never be executed [-Werror,-Wunreachable-code]
>           free(response);
>           ^~~~

Is that because you forgot the curly braces around the `if` body?

    if (ret != strlen(response)) {
        free(response);
        return error("IMAP error: sending response failed");
    }

    free(response);