Unable to simplify switch on enum from BinExport2Reader.class

[rohitab]

Vineflower version

1.10.1

Describe the bug

Here is the relevant section from the decompiled version of BinExport2Reader.class. Please see the comment tagged $VF.

// $VF: Unable to simplify switch on enum
// Please report this to the Vineflower issue tracker, at https://github.com/Vineflower/vineflower/issues with a copy of the class file (if you have the rights to distribute it!)
private static EJumpType toJumpType(com.google.security.zynamics.BinExport.BinExport2.FlowGraph.Edge.Type var0) {
  switch (1.$SwitchMap$com$google$security$zynamics$BinExport$BinExport2$FlowGraph$Edge$Type[var0.ordinal()]) {
     case 1:
        return EJumpType.JUMP_TRUE;
     case 2:
        return EJumpType.JUMP_FALSE;
     case 3:
        return EJumpType.UNCONDITIONAL;
     case 4:
        return EJumpType.SWITCH;
     default:
        throw new IllegalArgumentException("Invalid flow graph edge type");
  }
}

Additional information

You can extract BinExport2Reader.class from the attached archive BinExport2Reader.class.zip.

It's from BinDiff version 8. The source code for the class is available in BinExport2Reader.java. You can download the complete software from the BinDiff releases page.

[jaskarth]

Hello, I tried to replicate this bug but I couldn't reproduce it. Did you decompile the whole jar at once? Switch on enum data is stored in a separate class that must also be loaded when the switch is decompiled, otherwise Vineflower will be unable to retrieve the data within.