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{ %VERSION=1.1 }
{%OPT=-Og}
{ This verifies if the strings are
correctly aligned, normally the generated assembler
should be verified manually.
I consider this test as flawed, or is there a reason, why a
shortstring should be aligned to pointer boundaries? (FK)
}
program talign2;
{$ifdef fpc}
{$mode objfpc}
{$define haswidestring}
{$ifdef go32v2}
{$define USE_INTERNAL_UNICODE}
{$endif}
{$ifdef USE_INTERNAL_UNICODE}
{$define USE_FPWIDESTRING_UNIT}
{$define USE_UNICODEDUCET_UNIT}
{$define USE_CPALL_UNIT}
{$endif}
{$else}
{$ifndef ver70}
{$define haswidestring}
{$endif}
{$endif}
{$ifdef fpc}
{$ifndef USE_INTERNAL_UNICODE}
{$ifdef unix}
uses
{$ifdef darwin}iosxwstr{$else}cwstring{$endif};
{$endif unix}
{$else USE_INTERNAL_UNICODE}
uses
{$ifdef USE_UNICODEDUCET_UNIT}
unicodeducet,
{$endif}
{$ifdef USE_FPWIDESTRING_UNIT}
fpwidestring,
{$endif}
{$ifdef USE_CPALL_UNIT}
cpall;
{$endif}
{$endif USE_INTERNAL_UNICODE}
{$endif}
{$ifdef CPUI8086}
{ The pointer size is either 2 or 4
depending on memory model, but
there is no point in having better
alignment than 2 for a pointer,
as 4 byte pointer are in fact
2 byte offset and 2 byte segment/selector }
const
pointer_alignment = 2;
{$else}
const
pointer_alignment = sizeof(pointer);
{$endif}
procedure test(b : boolean);
begin
if b then exit;
WriteLn('Error in length/alignment!!');
halt(1);
end;
var
pt: pchar;
const
b: byte = 0; { lets just misalign the stuff }
p : pchar = 'simple pchar stuff';
ansistr : ansistring = 'simple ansistring';
{$ifdef haswidestring}
widestr : widestring = 'simple widestring';
{$endif}
shortstr :shortstring = 'simple shortstring';
begin
test(length(ansistr)=17);
{$ifdef haswidestring}
test(length(widestr)=17);
{$endif}
test(length(shortstr)=18);
{ verify if the address are correctly aligned! }
pt:=@shortstr;
test((ptruint(pt) mod pointer_alignment)=0);
pt:=p;
test((ptruint(pt) mod pointer_alignment)=0);
pt:=pchar(ansistr);
test((ptruint(pt) mod pointer_alignment)=0);
{$ifdef haswidestring}
pt:=pchar(widestr);
{$ifdef FPC_WINLIKEWIDESTRING}
test((ptruint(pt) mod 4)=0);
{$else FPC_WINLIKEWIDESTRING}
test((ptruint(pt) mod pointer_alignment)=0);
{$endif FPC_WINLIKEWIDESTRING}
{$endif}
end.
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