Hi Alessio/Fiona/Ben/Ivan,

Thank you very much for reporting this issue! This is due to a bug in the compiler when optimizing subtraction of integer constant 0x80000000. We have identified its root cause and testing a fix. We will release the fix as soon as possible.

In the meantime if you need a source code workaround, please use #pragma optimize( "", off ) and #pragma optimize( "", on ) around the affected function. These functions should have subtraction of integer constant 0x80000000 like the function func in the sample program reported by Alessio.

If this issue is severe, causing critical business situations or blocking your product development or deployment, please go to https://support.microsoft.com or call 1-800-MICROSOFT for assistance. For Microsoft premier customers, please contact your administrator, your Technical Account Manager, or your Microsoft premier account representative.

Thanks,
Rui Zhang
Microsoft Visual C++ Team

Hi Alessio/Fiona/Ben/Ivan,

Please expect to see the fix of this bug in Visual Studio 2017 version 15.6 Preview 2.

Thanks,

Rui Zhang

Microsoft Visual C++ Team

Hi Alessio/Fiona/Ben/Ivan,

The fix will also be released in Visual Studio 2017 version 15.5.3.

Thanks,

Rui Zhang

Microsoft Visual C++ Team

Note that VS 2017 15.5.3 is now available.

This issue has been fixed and is now available in our latest update. You can download the update via the in-product notification or from here: https://www.visualstudio.com/vs/ Thanks to everyone who provided feedback, votes and solutions for this problem.