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Thread: QFile rename fails with 4 character extension

  1. #1
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    Default QFile rename fails with 4 character extension

    This ia an apparent bug in Qt

    I can use QFile to create and open files with 4 characters in the extension but when I receive a temp file and try to rename it using 4 characters in the extension the rename fails. If I truncate the extension to 3 character rename works. This of course causes a problem in the client server world where the client still uses the full path name and the server had to truncate the name.

    OS: windows 10 Build env: Visual Studio 2017 - Qt5.12.

    Bruce

  2. #2
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    Default Re: QFile rename fails with 4 character extension

    Post a minimal, self-contained program that reproduces the error.
    If by "temp file" you mean a file managed by QTemporaryFile, then renaming it will likely fail because QTemporaryFile maintains the file in an open state and Windows does not like renaming open files.

  3. #3
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    Default Re: QFile rename fails with 4 character extension

    Chris:
    Thanks for your reply. I worked through a short example as you requested but it did not replicate the problem. I am thinking at this point it is a timing issue getting data from the remote size and closing the file before the rename. I am not sure how to mark this issue as closed but I think it is. I will start a new thread with the issue that I think is actually causing this problem. The http server is not signaling finished so I used the message header size and looked for that many bytes but the TCPsocket kept getting more data

    Thanks again

    Bruce

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