[Lazarus] *** GMX Spamverdacht *** Re: *** GMX Spamverdacht *** Re: Improving UTF8CharacterLength?

[Jürgen Hestermann]

Am 2015-08-13 um 13:29 schrieb Michael Van Canneyt:
>
>
> On Thu, 13 Aug 2015, Jürgen Hestermann wrote:
>
>> Am 2015-08-13 um 12:59 schrieb Michael Van Canneyt:
>>>
>>>
>>> On Thu, 13 Aug 2015, Jürgen Hestermann wrote:
>>>
>>>> Determining the character length of a invalid UTF-8 string is quite useless.
>>>
>>> Because it's not about getting a correct result then, but about not crashing due to invalid memory access.
>>
>> But invalid memory access takes place anyway (within UTF8CharacterLength).
>
> Why do you say so ? Unless you give a really bogus pointer, one of p[0] till p[3] is guaranteed to have #0 in it.
> In such a case, no scan of the next byte is done ?

Sorry, I missinterpreted the code.
You are right.
I now see that the zero byte would stop any futher access to bytes after it.