I'm hitting the following assert in B2G on debug builds: Assertion failure: i < Length() (invalid array index), at ../../dist/include/nsTArray.h:535 This appears to be occuring with light sensors which only have a single value. The nsDeviceSensors::Notify function blindly pulls 3 values which causes the assert.
Created attachment 629033 [details] [diff] [review] One way of resolving the problem.
I would do const InfallibleTArray<float>& values = aSensorData.values(); size_t len = values.Length(); double x = len > 0 ? values : 0.0; double y = len > 1 ? values : 0.0; //...
Created attachment 629041 [details] [diff] [review] Proposed patch for bug 760347 v2 Bah. Humbug. OK - I like the looks of your version better.