May 112009
 

Are you having trouble with VS2008 after conversion from VS2005 to VS2008? Most common complaints are that the executable is way to slow when compared to it’s counterpart generated with VS2005. The reason for this is given in this MSDN forum thread have a look…

http://social.msdn.microsoft.com/Forums/en-US/vcgeneral/thread/fb32033b-7bad-439b-a94c-943a17f0cbb2

The essence of this thread is given below (quote from the thread, thanks to Jon Baggott)…

In Visual Studio 2008 SP1 (SP1 not RTM) there is a serious bug with /O2 optimization. One way this bug can be triggered is by upgrading a project from a previous version. Even though the project setting shows the release build is set to /O2, the build can be not optimized at all. To work around it you have to change the setting to no optimization, apply, and then change it back to /O2. The quick way to see if this is needed is to check whether the setting for optimization is in bold or regular – if’s it’s bold you’re OK; if it’s regular text you’re not. This bug has been reported to Microsoft by many people over the past few months via the Connect feedback site but every case has been closed by them without doing anything and for completely invalid reasons.