From MJD’s file of good advice:

#11907 Looking for a compiler bug is the strategy of LAST resort. LAST resort.

#11943 Ah yes, and you are the first person to have noticed this bug since 1987. Sure.

As a first, second and third rule of thumb, always assume that the problem is in your code. All my mysterious bugs have always been my own bugs. As for what the problem is – you show so little code that noone will be able to do anything but guess. Post more code.

Makeshifts last the longest.