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Forum: Tech Log

26th May 2015, 15:55

Replies: 98

Boeing 787 integer overflow bug

Views: 36,769

Posted By EEngr

Good luck with that. Modern aircraft have...

Good luck with that. Modern aircraft have electrical systems far too complex to operate for a 'simple logic network'. And airlines are not going back to the days of a flight engineer with a panel...

Forum: Tech Log

25th May 2015, 14:53

Replies: 98

Boeing 787 integer overflow bug

Views: 36,769

Posted By EEngr

This is he primary problem as I see it. The fact...

This is he primary problem as I see it. The fact that the spec/design/test process appears to have a large hole in it through which this bug slipped needs to be investigated further.

The whole GCU...

Forum: Tech Log

22nd May 2015, 15:34

Replies: 98

Boeing 787 integer overflow bug

Views: 36,769

Posted By EEngr

Because signed integer math and conditional logic...

Because signed integer math and conditional logic can give you positive/negative interval values. As in one event occurred before or after another. And there may be places in the code where this...

Forum: Tech Log

2nd May 2015, 16:08

Replies: 98

Boeing 787 integer overflow bug

Views: 36,769

Posted By EEngr

DozyWannabe...

DozyWannabe (http://www.pprune.org/members/54871-dozywannabe)

Sadly, this is exactly the case I ran into many times while at Boeing. One would expect that embedded controllers would be based on...

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