Microsoft releases upgrades and changes to .net, msbuild and Visual Studio quite frequently.
How can I be sure the MSIL code created by msbuild or the Roslyn compiler in VS 2015 will be the same or behave the same after the updates?
Completely testing an application after every Microsoft update would be time prohibitive.
How can I be sure my applications won't be affected? Is it safe to assume that Microsoft won't push changes that will affect the compilation of existing code?