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Posted to dev@thrift.apache.org by "Jens Geyer (JIRA)" <ji...@apache.org> on 2013/05/21 02:11:17 UTC
[jira] [Comment Edited] (THRIFT-1973) TCompactProtocol in C# lib
does not serialize and deserialize negative int32 and int64 number
correctly
[ https://issues.apache.org/jira/browse/THRIFT-1973?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13662489#comment-13662489 ]
Jens Geyer edited comment on THRIFT-1973 at 5/21/13 12:09 AM:
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{quote}
And the test cases already in the test project failed for negative numbers on server vs what was sent from the client.
{quote}
Just curious (and without having tried myself): What type are these negative numbers of? Maybe i64 and/or byte? Or same as above, or any (integer) type?
was (Author: jensg):
{quote}
And the test cases already in the test project failed for negative numbers on server vs what was sent from the client.
{quote}
Just curious (and without having tried myself): What type are these negative numbers of? Maybe i64 and/or byte?
> TCompactProtocol in C# lib does not serialize and deserialize negative int32 and int64 number correctly
> -------------------------------------------------------------------------------------------------------
>
> Key: THRIFT-1973
> URL: https://issues.apache.org/jira/browse/THRIFT-1973
> Project: Thrift
> Issue Type: Bug
> Components: C# - Library
> Affects Versions: 0.9, 1.0
> Environment: Windows
> Reporter: Eric Ding
> Labels: PatchAvailable
> Fix For: 1.0
>
> Attachments: thrift-1973-TCompactProtocol-Fix.patch
>
>
> longToZigzag and ZigzagToLong in TCompactProtocol does not perform corresponding operations to serialize and deserialize negative int32 and int64 number correctly. Purpose to change longToZigzag from (ulong)(((ulong)n << 1) ^ ((ulong)n >> 63)) to (ulong)(n << 1) ^ (ulong)(n >> 63).
> Will need to do same for intToZigZag. The reason is that we want arithmetic shift not logic shift.
> The test case in the project shows this, the output on server and client are different even though client received the same number back.
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