On Sun, Jul 20, 2014 at 7:55 PM, Eric Sunshine <sunshine@xxxxxxxxxxxxxx> wrote:
> On Sun, Jul 13, 2014 at 12:51 AM, Nguyễn Thái Ngọc Duy
> <pclouds@xxxxxxxxx> wrote:
>> +
>> + junk_pid = getpid();
>> + atexit(remove_junk);
>> + sigchain_push_common(remove_junk_on_signal);
>> +
>> if (mkdir(sb_repo.buf, 0777))
>> die_errno(_("could not create directory of '%s'"), sb_repo.buf);
>> + junk_git_dir = sb_repo.buf;
>
> I've managed to convince myself that, although junk_git_dir becomes a
> dangling pointer by the end of prepare_linked_checkout(), it should
> never afterward be accessed. Perhaps it would make sense to make this
> easier to follow by clearing junk_git_dir when is_junk is cleared?
>
>> + is_junk = 1;
>>
>> strbuf_addf(&sb_git, "%s/.git", path);
>> if (safe_create_leading_directories_const(sb_git.buf))
>> die_errno(_("could not create leading directories of '%s'"),
>> sb_git.buf);
>> + junk_work_tree = path;
>>
>> write_file(sb_git.buf, 1, "gitdir: %s/repos/%s\n",
>> real_path(get_git_common_dir()), name);
>> @@ -879,7 +917,14 @@ static int prepare_linked_checkout(const struct checkout_opts *opts,
>> memset(&cp, 0, sizeof(cp));
>> cp.git_cmd = 1;
>> cp.argv = opts->saved_argv;
>> - return run_command(&cp);
>> + ret = run_command(&cp);
>> + if (!ret)
>> + is_junk = 0;
>
> Here: perhaps also set is_junk_dir to NULL since it otherwise is about
> to become a dangling pointer.
My bad: s/is_junk_dir/junk_git_dir/
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