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List: kde-devel
Subject: Re: dumb C++ question
From: Mario Weilguni <mweilguni () sime ! com>
Date: 1999-05-23 8:49:25
[Download RAW message or body]
Am Sun, 23 May 1999 schrieb Stephan Kulow:
>Hi!
>
>What does new int[0]?
>
>In QString (about line 10300) is:
>
> QChar* result = 0;
> uint l = 0;
> if ( str ) {
> if ( maxlen != (uint)-1 ) {
> while (str[l] && l < maxlen)
> l++;
> } else {
> // Faster?
> l = strlen(str);
> }
>-> QChar *uc = new QChar[l];
> result = uc;
> uint i = l;
> while ( i-- )
> *uc++ = *str++;
> }
>
>if str == "", then the marked line will
>do new QChar[0]. But what does it return?
>A test said me, it returns something, but
>what does it return? Is it defined? I must
>admit, it's the first time I think about this
>"problem" :)
It returns the smallest block possible, 16 bytes. It need to return something,
to be able to realloc() it lateron.
Mario
>
>Greetings, Stephan
>
>--
>Und sie nannten ihn, wie er selbst unterschrieb -
>Den Trojanischen Pferdedieb
--
Reality is a cop-out for people who can't handle drugs.
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