Visual C++ Optimizer fixes for Visual Studio 2015 Update 3

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This article describes a hotfix package for Microsoft Visual Studio 2015 Update 3. The hotfix contains several fixes to the Visual C++ optimizer and code generator (c2.dll). For more information, see the "Issues that are fixed in this hotfix" section.

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Resolution

How to obtain this hotfix

The following file is available for download from the Microsoft Download Center:

Download the hotfix package now.

For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:

119591 How to obtain Microsoft support files from online services

Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file.

Prerequisites

To apply this hotfix, you must have Visual Studio 2015 Update 3 installed.

Restart requirement

You may have to restart the computer after you apply this hotfix if no instance of Visual Studio is being used.

Hotfix replacement information

This hotfix doesn't replace other hotfixes.

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Issues that are fixed in this hotfix

The following bugs are all resolved by this hotfix:

A potential miscompilation in Visual C++ straight-line code performing arithmetic on identically-typed fields of a struct in a regular but non-contiguous pattern.
A potential miscompilation in Visual C++ from a few rare corner case bugs in return value optimization.

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