jssc crashed Java 11

[wimjongman]

I have started devmode to figure out what the issue is with the uploader. I started sloeber from the IDE. Creating a sketch and compiling works fine but the avrdude upload crashes the jvm due to a jssc crash.

I have found this issue:
arduino/Arduino#6788

dumps:
javadump.txt
javacore.20201101.221210.14140.0002.txt

Main stack dump snippet

3XMTHREADINFO "Worker-3: avrdude" J9VMThread:0x00000000008DE700, omrthread_t:0x000002F3AF11CC30, java/lang/Thread:0x00000000E2050028, state:R, prio=5
3XMJAVALTHREAD (java/lang/Thread getId:0x48, isDaemon:false)
3XMTHREADINFO1 (native thread ID:0xAB90, native priority:0x5, native policy:UNKNOWN, vmstate:R, vm thread flags:0x00000020)
3XMCPUTIME CPU usage total: 0.203125000 secs, user: 0.015625000 secs, system: 0.187500000 secs, current category="Application"
3XMHEAPALLOC Heap bytes allocated since last GC cycle=200400 (0x30ED0)
3XMTHREADINFO3 Java callstack:
4XESTACKTRACE at jssc/SerialNativeInterface.openPort(Native Method)
4XESTACKTRACE at jssc/SerialPort.openPort(SerialPort.java:158)
4XESTACKTRACE at io/sloeber/core/api/Serial.connect(Serial.java:168)

[wimjongman]

I found a newer version of the jssc wrapper that solved my issue.

https://github.com/java-native/jssc

I also noticed that cdt has their own serial bundle. I guess we should switch.

[jantje]

I'm fine with that :-)
If we can use the cdt one that would be great

[wimjongman]

I think this one is done. Correct?

[jantje]

I think so.
I'm trying to get my buildserver back up so nightly will be 4.4 hopefully soon