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* fix TBufferedFileStream.Seek(0,soBeginning) as proposed by Andrey Zubarev, resolves #38351

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git-svn-id: trunk@48282 -
This commit is contained in:
florian 2021-01-21 21:08:13 +00:00
parent 2b79b11744
commit f4c74b6b09
3 changed files with 35 additions and 1 deletions
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1
.gitattributes vendored
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@ -18642,6 +18642,7 @@ tests/webtbs/tw38316.pp svneol=native#text/plain
tests/webtbs/tw3833.pp svneol=native#text/plain
tests/webtbs/tw38337.pp svneol=native#text/plain
tests/webtbs/tw38339.pp svneol=native#text/plain
tests/webtbs/tw38351.pp -text svneol=native#text/pascal
tests/webtbs/tw3840.pp svneol=native#text/plain
tests/webtbs/tw3841.pp svneol=native#text/plain
tests/webtbs/tw3863.pp svneol=native#text/plain

2
packages/fcl-base/src/bufstream.pp
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@ -812,7 +812,7 @@ begin
lNewOffset:=FCacheStreamPosition+Offset;
end;
end;
if lNewOffset>0 then begin
if lNewOffset>=0 then begin
FCacheStreamPosition:=lNewOffset;
Result:=lNewOffset;
end else begin

33
tests/webtbs/tw38351.pp Normal file
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@ -0,0 +1,33 @@
{$MODE OBJFPC}
{$APPTYPE CONSOLE}
uses Classes, BufStream, Sysutils;
procedure TestBufferedFileStream;
var
F: TStream;
pf: File;
begin
Assign(pf,'tw38351.tmp');
Rewrite(pf,1);
Seek(pf,100);
Close(pf);
F := TBufferedFileStream.Create('tw38351.tmp', fmOpenRead);
try
Writeln(F.Position);
if F.Position<>0 then
halt(1);
Writeln(F.Seek(0, soBeginning)); // TFileStream = 0, TBufferedFileStream = -1
Writeln(F.Position);
if F.Position<>0 then
halt(1);
finally
F.Free;
DeleteFile('tw38351.tmp');
end;
end;
begin
TestBufferedFileStream;
writeln('ok');
end.