Warn for Undeclared symbols not working

[davidgraham]

In project settings I have Warn for undecared symbols set to Yes.
But when I add a new variable and don't decare it, I don't get a warning.
Is this the correct setting?

I am using 2011.10 - looking at postsit suggests there was a bug that was fixed with a more recent version.

I used to get this warning.

I have uninstalled & reinstalled IVF a lot recently.

[davidgraham]

I have found that it works most of the time, but sometimes when I add a new variable to the 'code' and don't declare it it doesn't give a warning when I compile, then later it does.

[Steven_L_Intel1]

I don't know what would cause this feature to work on a later compile - it doesn't rely on anything outside of the source. If you can show a source file where you get this behavior, I'd like to see it. Maybe a command line log showing it not working and then working on a recompile.