NPD with GOTO

[mikevoronov]

I have stumbled with NPD during compilation of this example. It seems that this exception caused by generation of stack locals after GOTO operation: the field locals sets to null by asm after GOTO and then processing of iconst_1 operation tries to invoke get on null object here

localsRead.put(var, locals.get(var));

The stack trace is

visitVarInsn:334, Splitter$StackAndLocalTrackingAdapter (asmble.compile.jvm.msplit)
accept:74, VarInsnNode (org.objectweb.asm.tree)
splitPointFromInfo:267, Splitter$Iter (asmble.compile.jvm.msplit)
longestForCurrIndex:152, Splitter$Iter (asmble.compile.jvm.msplit)
nextOrNull:129, Splitter$Iter (asmble.compile.jvm.msplit)
hasNext:107, Splitter$Iter (asmble.compile.jvm.msplit)
split:52, SplitMethod (asmble.compile.jvm.msplit)
split:31, SplitMethod (asmble.compile.jvm.msplit)
fromClassNode:32, AsmToBinary (asmble.compile.jvm)
fromClassNode$default:16, AsmToBinary (asmble.compile.jvm)
run:72, Compile (asmble.cli)
run:10, Compile (asmble.cli)
runWithArgs:17, Command (asmble.cli)
main:35, MainKt (asmble.cli)

Also tested with the latest asm - the same result.

[cretz]

Hrmm, haven't been able to revisit this project in a bit. A reduced test case would be ideal. But in general I can't promise a time when I'll get to investigating this.