Automated test System.Engine.Files.MMapFileWrite fails in 5.6 on Linux Server configuration

Development Platform & Builds
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Seems to be happening because the Windows platform file was updated in 5.6 to implicitly create the target file if it’s requested for read/write, while the Linux version still assumes the file already exists. Adding O_CREAT to the open() flags appears to fix the issue.

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Steps to Reproduce
Run test System.Engine.Files.MMapFileWrite in a Linux configuration.

3

Thanks for the report. I’ve added a ticket to fix it up. It’s too late to make it into the 5.7 release, but I’ll make sure to get it in ASAP.

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Thanks! Small update, after testing I found it’s also necessary to grow the file to the requested size, again to match the behavior of the Windows platform behavior.

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Yup, I just made that change myself. :slight_smile: