ctf: add trace with empty sequence field & uint32_t length type

[christophebedard]

Test trace for eclipse-tracecompass/org.eclipse.tracecompass#58.

Event definition:

TRACEPOINT_EVENT(
  my_provider,
  my_sequence_tp,
  TP_ARGS(
    const int64_t *, arr_arg,
    const uint32_t, count_arg
  ),
  TP_FIELDS(
    ctf_sequence(int64_t, seq, arr_arg, uint32_t, count_arg)
  )
)

Tracepoint trigger:

tracepoint(my_provider, my_sequence_tp, NULL, 0U);

Opening this trace in Trace Compass leads to this error:

!ENTRY org.eclipse.tracecompass.tmf.ctf.core 4 0 2024-04-11 11:10:28.243
!MESSAGE Trace read error channel0_6
!STACK 0
org.eclipse.tracecompass.ctf.core.CTFException: Trace read error channel0_6
	at org.eclipse.tracecompass.ctf.core.trace.CTFStreamInputReader.readNextEvent(CTFStreamInputReader.java:320)
	at org.eclipse.tracecompass.ctf.core.trace.CTFTraceReader.advance(CTFTraceReader.java:366)
	at org.eclipse.tracecompass.internal.tmf.ctf.core.trace.iterator.CtfIterator.advance(CtfIterator.java:255)
	at org.eclipse.tracecompass.tmf.ctf.core.context.CtfTmfContext.advance(CtfTmfContext.java:142)
	at org.eclipse.tracecompass.tmf.ctf.core.trace.CtfTmfTrace.getNext(CtfTmfTrace.java:465)
	at org.eclipse.tracecompass.tmf.ctf.core.trace.CtfTmfTrace.getNext(CtfTmfTrace.java:1)
	at org.eclipse.tracecompass.internal.tmf.core.component.TmfEventThread.run(TmfEventThread.java:204)
	at org.eclipse.tracecompass.internal.tmf.core.request.TmfRequestExecutor$1.run(TmfRequestExecutor.java:152)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
	at java.base/java.lang.Thread.run(Thread.java:840)
Caused by: org.eclipse.tracecompass.ctf.core.CTFException: Cannot read the integer, the buffer does not have enough remaining space. Requested:32 Available:0
	at org.eclipse.tracecompass.ctf.core.event.io.BitBuffer.getInt(BitBuffer.java:221)
	at org.eclipse.tracecompass.ctf.core.event.io.BitBuffer.get(BitBuffer.java:171)
	at org.eclipse.tracecompass.ctf.core.event.types.IntegerDeclaration.read(IntegerDeclaration.java:553)
	at org.eclipse.tracecompass.ctf.core.event.types.IntegerDeclaration.createDefinition(IntegerDeclaration.java:481)
	at org.eclipse.tracecompass.ctf.core.event.types.IntegerDeclaration.createDefinition(IntegerDeclaration.java:1)
	at org.eclipse.tracecompass.ctf.core.event.types.StructDeclaration.fillStruct(StructDeclaration.java:220)
	at org.eclipse.tracecompass.ctf.core.event.types.StructDeclaration.createDefinition(StructDeclaration.java:159)
	at org.eclipse.tracecompass.ctf.core.event.types.StructDeclaration.createDefinition(StructDeclaration.java:1)
	at org.eclipse.tracecompass.ctf.core.event.types.VariantDeclaration.createDefinition(VariantDeclaration.java:139)
	at org.eclipse.tracecompass.ctf.core.event.types.VariantDeclaration.createDefinition(VariantDeclaration.java:1)
	at org.eclipse.tracecompass.ctf.core.event.types.StructDeclaration.fillStruct(StructDeclaration.java:220)
	at org.eclipse.tracecompass.ctf.core.event.types.StructDeclaration.createDefinition(StructDeclaration.java:186)
	at org.eclipse.tracecompass.internal.ctf.core.trace.CTFPacketReader.readNextEvent(CTFPacketReader.java:149)
	at org.eclipse.tracecompass.internal.ctf.core.trace.CTFPacketReader.readNextEvent(CTFPacketReader.java:1)
	at org.eclipse.tracecompass.ctf.core.trace.CTFStreamInputReader.readNextEvent(CTFStreamInputReader.java:314)
	... 10 more

[MatthewKhouzam]

great catch

[bhufmann]

Looks good to me. The build failure is unrelated to the PR and caused by the Jenkins setup. I ran the build on my computer, and it works fine.

[christophebedard]

I believe that a new release needs to be manually triggered (https://www.eclipse.org/lists/tracecompass-dev/msg01803.html).