After upgrading from 1.0.5 to 1.8.7, a sketch that compiles in 1.0.5 is now giving errors about the scope of some variables which should have been defined in avr/interrupts.h. I tried changing my settings to turn off aggressive caching as described in from 1.6.8 to 1.8.5 several sketches can not be …

sketch no longer compiles after upgrade to 1.8.7

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