On Thu, 29 Jun 2023, Mattias Gaertner via fpc-pascal wrote:
On Thu, 29 Jun 2023 21:18:44 +0700
Hairy Pixels via fpc-pascal <fpc-pascal@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.
Yes, it is:
---
_$PROGRAM$_Ld1:
# [4] p := '123';
.ascii "123\000"
.Le11:
---
Just as it is for a shortstring and ansistring:
---
# [6] s:='456';
.ascii "\003456\000"
.Le12:
.size _$PROGRAM$_Ld2, .Le12 - _$PROGRAM$_Ld2
---
Michael.
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