Why #pragma optimize(“”, off)

Question

I\'m reviewing a C++ MFC project. At the beginning of some of the files there is this line:

#pragma optimize(\"\", off)

I get that this turns o

Answer 1

Another alternative reason for these to be in a code base... Its an accident.

This is a very handy tool for turning off the optimizer on a specific file whilst debugging - as Ray mentioned above.

If changelists are not reviewed carefully before committing, it is very easy for these lines to make their way into codebases, simply because they were 'accidentally' still there when other changes were committed.