Test case available for issue 15206

[Brian Schott]

With some of the changes that are part of release of 2.078.0, 
this old bug can be more easily reproduced. I'm posting here so 
that this doesn't get lost in the bug tracker.

Fortunately I can work around this by disabling optimizations on 
one or two executables, but it would be nice to have this fixed 
soon.

https://issues.dlang.org/show_bug.cgi?id=15206