[fpc-pascal] string to widestring : what are the difficulties ?
Michael Van Canneyt
michael at freepascal.org
Sun Oct 9 13:16:21 CEST 2016
On Sun, 9 Oct 2016, Jonas Maebe wrote:
> On 09/10/16 08:50, Sven Barth wrote:
>> Am 08.10.2016 22:48 schrieb "Ched"
>> <charles.edouard.des.vastes.vignes at gmail.com
>> <mailto:charles.edouard.des.vastes.vignes at gmail.com>>:
>>> In http://www.freepascal.org/docs-html/ref/refsu14.html#x37-400003.2.8
>>> , the stack sized used by a Shortstring is Declared length + 2 . Why not
>>> Declared length + 1 ?
>> 1 Byte length and a zero byte to allow easy conversion to PChar.
> That is incorrect. Shortstring stringconstants are stored like that in the
> constant data section so they can be used both for assigning to shortstrings
> and to pchars, but shortstring variables/fields themselves are never
> null-terminated by the compiler/RTL.
> So there is in fact an error in the documentation: it should be length + 1.
That has already been corrected.
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