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|
{$mode objfpc}
uses sysutils;
{$ifndef FPC}
{$define ENDIAN_LITTLE}
{$endif}
type
int64rec = record
{$ifdef ENDIAN_LITTLE}
lo,hi:
{$else }
hi,lo :
{$endif}
cardinal;
end;
var
haserror,
error: boolean;
b: byte;
s: shortint;
i: smallint;
w: word;
l: longint;
c: cardinal;
t: int64;
q: qword;
{$r+}
begin
haserror := false;
b := 255;
t := b;
q := b;
b := 0;
t := b;
q := b;
s := 127;
t := s;
q := s;
s := -128;
t := s;
try
error := true;
q := s;
except
error := false;
end;
haserror := haserror or error;
w := 0;
t := w;
q := w;
w := 65535;
t := w;
q := w;
i := 32767;
t := i;
q := i;
i := -32768;
t := i;
try
error := true;
q := i;
except
error := false;
end;
haserror := haserror or error;
c := 0;
t := c;
q := c;
c := $ffffffff;
t := c;
q := c;
l := -maxlongint-1;
t := l;
try
error := true;
q := l;
except
error := false;
end;
haserror := haserror or error;
l := maxlongint;
t := l;
q := l;
q := 0;
t := q;
with int64rec(q) do
begin
lo := 0;
hi := $ffffffff;
end;
try
error := true;
t := q;
except
error := false;
end;
haserror := haserror or error;
with int64rec(t) do
begin
lo := 0;
hi := $80000000;
end;
try
error := true;
q := t;
except
error := false;
end;
haserror := haserror or error;
with int64rec(t) do
begin
lo := $ffffffff;
hi := $7fffffff;
end;
q := t;
if haserror then
begin
writeln('64bit range checking still buggy!');
halt(1);
end;
end.
|
