From: Bert Wesarg <bert.wesarg@googlemail.com>
Date: Fri, 22 Aug 2008 17:56:22 GMT
Subject: Re: [PATCH] Support "core.excludesfile = ~/.gitignore"
Message-ID: <36ca99e90808221056i6d79b122occ4ae1e21da6a221@mail.gmail.com>
In-Reply-To: <loom.20080822T165656-932@post.gmane.org>

On Fri, Aug 22, 2008 at 18:58, Eric Raible <raible@gmail.com> wrote:
> Karl Chen <quarl <at> cs.berkeley.edu> writes:
>
>> +static char const *git_config_subst_userdir(char const *value) {
>> +     if (value[0] == '~' && value[1] == '/') {
>
> Might you want to check that strlen(value) is at least 2?
No.

    swtich (strlen(value)) {
    case 0:
        /* value[0] == '\0' => value[0] != '~'
           value[1] will never be dereferenced, because of lazy && */
    case 1:
       /* value[0] != '\0'
          if (value[0] == '~')
              value[1] == '\0' => value[1] != '/' */
    default:
       /* ... */
    }

So no invalid memory dereferences.

Regards
Bert
>
> - Eric
>
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