FIX: Incorrect machine code generation by the Visual C++ compiler when an optimization compiler option is enabled in Visual Studio 2010 - Microsoft Support

Symptoms Consider the following scenario: You develop a Microsoft Visual C++ 2010 application in Microsoft Visual Studio 2010. You enable an optimization compiler option for the application, and then you build the application. For example, you enable the Maximize Speed (/O2) optimization compiler option. You run the application. In this scenario, incorrect machine code is generated. Specifically,

[kkamegawa]

Visual Studio 2010 SP1のC++で最適化を有効にする(たとえば/O2)と誤った実行コードを生成してしまうことがあるそうだ。パッチがあるのでサポートに請求すればいいらしい。