Assertion error in CRT calling _osfile() in VS 2008?

Question

I have a C++ code base that has been working for a long time. The code base was a legacy VS 2003 set of projects that I recently migrated to VS 2008. The migration seemed

Answer 1

The issue is resolved - and unrelated to chsize. The linking model to the c-runtime libraries chosen for code generation was set to multi-threaded debug (/MTd) for the main project, but multi-threaded debug DLL (/MDd) for all of the projects in the solution that it linked to. Changing to /MDd resolved the issue.

I am familiar with these linking issues and am generally careful to set them properly, but because this was an upgrade of a working project from an earlier version of Visual Studio with no changes, I did not think to look down this road. I did not investigate how or why the setting was changed (or even if it was set this way in the previous version but did not cause problems).