[avr-libc-dev] [bug #37778] _MemoryBarrier() in cpufunc.h error on compile

[Dmitry Xmelkov]

Update of bug #37778 (project avr-libc):

                  Status:                    None => In Progress            
        Percent Complete:                      0% => 50%                    
             Assigned to:                    None => dmix                   

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Follow-up Comment #2:

What is the necessity to add memory barrier for _NOP()?
Common usage, like:
    PORTB |= 1;
    _NOP();
    PORTB &= ~1;
is safe, as hardware registers are volatile.


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