Missing scope for frame

[arosien]

Consistently happens in jpeg.dfdl.xsd with works.jpg.

[arosien]

Log prior to error:

2021-06-17 12:22:13,057 [io-compute-6] DEBUG d.d.d.DAPodil - R> #34 next {"threadId":1} 
2021-06-17 12:22:13,058 [io-compute-6] DEBUG d.d.d.DAPSession - <R #34 next null 
2021-06-17 12:22:13,059 [io-compute-1] DEBUG d.d.d.DAPSession - <E stopped step 
2021-06-17 12:22:13,061 [io-compute-3] DEBUG d.d.d.Parse - post-control await 
2021-06-17 12:22:13,062 [io-compute-4] DEBUG d.d.d.DAPSession - <E output 
2021-06-17 12:22:13,063 [io-compute-5] DEBUG d.d.d.DAPodil - R> #35 threads null 
2021-06-17 12:22:13,064 [io-compute-5] DEBUG d.d.d.DAPSession - <R #35 threads {"threads":[{"id":1,"name":"daffodil"}]} 
2021-06-17 12:22:13,068 [io-compute-5] DEBUG d.d.d.DAPodil - R> #36 stackTrace {"threadId":1,"startFrame":0,"levels":20} 
2021-06-17 12:22:13,068 [io-compute-5] DEBUG d.d.d.DAPSession - <R #36 stackTrace {"stackFrames":[{"id":3,"source":{"name":"jpeg.dfdl.xsd","path":"file:///Users/arosien/nteligen/example-daffodil-debug/src/main/resources/jpeg.dfdl.xsd","sourceReference":0},"line":52,"column":0,"name":"DataBlob"},{"id":2,"source":{"name":"jpeg.dfdl.xsd","path":"file:///Users/arosien/nteligen/example-daffodil-debug/src/main/resources/jpeg.dfdl.xsd","sourceReference":0},"line":49,"column":0,"name":"Segment"},{"id":1,"source":{"name":"jpeg.dfdl.xsd","path":"file:///Users/arosien/nteligen/example-daffodil-debug/src/main/resources/jpeg.dfdl.xsd","sourceReference":0},"line":2,"column":0,"name":"JFIF"},{"id":0,"source":{"name":"jpeg.dfdl.xsd","path":"file:///Users/arosien/nteligen/example-daffodil-debug/src/main/resources/jpeg.dfdl.xsd","sourceReference":0},"line":2,"column":0,"name":"JFIF"}],"totalFrames":4} 
2021-06-17 12:22:13,070 [io-compute-6] DEBUG d.d.d.Parse - pre-offer 
2021-06-17 12:22:13,070 [io-compute-6] DEBUG d.d.d.Parse - pre-checkBreakpoints 
2021-06-17 12:22:13,070 [io-compute-6] DEBUG d.d.d.Parse - pre-control await 
2021-06-17 12:22:13,087 [io-compute-6] DEBUG d.d.d.DAPodil - R> #37 scopes {"frameId":3} 
2021-06-17 12:22:13,088 [io-compute-6] DEBUG d.d.d.DAPSession - <R #37 scopes null 

[arosien]

There's a race: frame 3 was popped off and frame 4 was pushed on, but the UI then fetched frame 3. pre-offer is where the push happened, but where's the pop?

[arosien]

Parse.Debugee.step invokes control.step and then delivers the Debugee.State.Stopped event, but control.step shouldn't return until the data from the step has been committed (currently it races it).

[arosien]

Reopening, happens on frame 4 consistently now:

2021-07-07 15:27:59,413 [io-compute-7] DEBUG d.d.d.DAPodil - R> #42 threads null 
2021-07-07 15:27:59,414 [io-compute-7] DEBUG d.d.d.DAPSession - <R #42 threads {"threads":[{"id":1,"name":"daffodil"}]} 
2021-07-07 15:27:59,424 [io-compute-3] DEBUG d.d.d.DAPodil - R> #43 stackTrace {"threadId":1,"startFrame":0,"levels":20} 
2021-07-07 15:27:59,425 [io-compute-3] DEBUG d.d.d.DAPSession - <R #43 stackTrace {"stackFrames":[{"id":4,"source":{"name":"jpeg.dfdl.xsd","path":"file:///Users/arosien/nteligen/example-daffodil-debug/src/main/resources/jpeg.dfdl.xsd","sourceReference":0},"line":52,"column":0,"name":"DataBlob"},{"id":3,"source":{"name":"jpeg.dfdl.xsd","path":"file:///Users/arosien/nteligen/example-daffodil-debug/src/main/resources/jpeg.dfdl.xsd","sourceReference":0},"line":49,"column":0,"name":"Segment"},{"id":2,"source":{"name":"jpeg.dfdl.xsd","path":"file:///Users/arosien/nteligen/example-daffodil-debug/src/main/resources/jpeg.dfdl.xsd","sourceReference":0},"line":2,"column":0,"name":"JFIF"},{"id":1,"source":{"name":"jpeg.dfdl.xsd","path":"file:///Users/arosien/nteligen/example-daffodil-debug/src/main/resources/jpeg.dfdl.xsd","sourceReference":0},"line":2,"column":0,"name":"JFIF"}],"totalFrames":4} 
2021-07-07 15:27:59,435 [io-compute-5] DEBUG d.d.d.Parse - pre-offer 
2021-07-07 15:27:59,435 [io-compute-5] DEBUG d.d.d.Parse - pre-checkBreakpoints 
2021-07-07 15:27:59,435 [io-compute-5] DEBUG d.d.d.Parse - pre-control await 
2021-07-07 15:27:59,436 [io-compute-5] DEBUG d.d.d.Parse - waiting to be continued... 
2021-07-07 15:27:59,450 [io-compute-4] DEBUG d.d.d.DAPodil - R> #44 scopes {"frameId":4} 
2021-07-07 15:27:59,453 [io-compute-4] WARN  d.d.d.DAPodil - couldn't find scopes for frame 4: List((Id(5),Fill), (Id(3),Segment), (Id(2),JFIF), (Id(1),JFIF)) 
2021-07-07 15:27:59,453 [io-compute-4] DEBUG d.d.d.DAPSession - <R #44 scopes null