[fpc-pascal] Pchar from constant string

[Tomas Hajny]

On 2023-06-29 16:22, Mattias Gaertner via fpc-pascal wrote:
> On Thu, 29 Jun 2023 21:18:44 +0700
> Hairy Pixels via fpc-pascal <fpc-pascal at lists.freepascal.org> wrote:
> 
>> What is really happening in this snippet? I think it must be
>> implicitly taking the address of the constant string but is it also
>> adding the null terminator automatically? The string prints with
>> writeln so it must be null terminated right?
>> 
>> var
>>   p: Pchar;
>> begin
>>   p := '123';
>>   writeln(p);
> 
> AFAIK the trailing #0 is already stored in the binary.

Indeed - all constant strings are already terminated with #0. Note that 
this is not guaranteed for all string variables per se.

Tomas