public class com.oracle.truffle.js.test.instrumentation.GR18957
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: com.oracle.truffle.js.test.instrumentation.GR18957
  super_class: java.lang.Object
{
  public void <init>();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // com.oracle.truffle.js.test.instrumentation.GR18957 this
         0: .line 52
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // com.oracle.truffle.js.test.instrumentation.GR18957 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lcom/oracle/truffle/js/test/instrumentation/GR18957;

  public void testIt();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=7, locals=4, args_size=1
        start local 0 // com.oracle.truffle.js.test.instrumentation.GR18957 this
         0: .line 56
            iconst_0
            anewarray java.lang.String
            invokestatic com.oracle.truffle.js.test.instrumentation.TestUtil.newContextBuilder:([Ljava/lang/String;)Lorg/graalvm/polyglot/Context$Builder;
            invokevirtual org.graalvm.polyglot.Context$Builder.build:()Lorg/graalvm/polyglot/Context;
            astore 1 /* context */
        start local 1 // org.graalvm.polyglot.Context context
         1: .line 57
            aload 1 /* context */
            ldc "js"
            ldc "typeof abc === 'undefined'"
            invokevirtual org.graalvm.polyglot.Context.eval:(Ljava/lang/String;Ljava/lang/CharSequence;)Lorg/graalvm/polyglot/Value;
            pop
         2: .line 60
            iconst_1
            newarray 4
            astore 2 /* passed */
        start local 2 // boolean[] passed
         3: .line 61
            new java.lang.Thread
            dup
            new com.oracle.truffle.js.test.instrumentation.GR18957$1
            dup
            aload 0 /* this */
            aload 1 /* context */
            aload 2 /* passed */
            invokespecial com.oracle.truffle.js.test.instrumentation.GR18957$1.<init>:(Lcom/oracle/truffle/js/test/instrumentation/GR18957;Lorg/graalvm/polyglot/Context;[Z)V
            invokespecial java.lang.Thread.<init>:(Ljava/lang/Runnable;)V
            astore 3 /* t */
        start local 3 // java.lang.Thread t
         4: .line 68
            aload 3 /* t */
            invokevirtual java.lang.Thread.start:()V
         5: .line 69
            aload 3 /* t */
            invokevirtual java.lang.Thread.join:()V
         6: .line 70
            aload 2 /* passed */
            iconst_0
            baload
            invokestatic org.junit.Assert.assertTrue:(Z)V
         7: .line 71
            return
        end local 3 // java.lang.Thread t
        end local 2 // boolean[] passed
        end local 1 // org.graalvm.polyglot.Context context
        end local 0 // com.oracle.truffle.js.test.instrumentation.GR18957 this
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    8     0     this  Lcom/oracle/truffle/js/test/instrumentation/GR18957;
            1    8     1  context  Lorg/graalvm/polyglot/Context;
            3    8     2   passed  [Z
            4    8     3        t  Ljava/lang/Thread;
    Exceptions:
      throws java.lang.InterruptedException
    RuntimeVisibleAnnotations: 
      org.junit.Test()
}
SourceFile: "GR18957.java"
NestMembers:
  com.oracle.truffle.js.test.instrumentation.GR18957$1  com.oracle.truffle.js.test.instrumentation.GR18957$GR18957Instrument  com.oracle.truffle.js.test.instrumentation.GR18957$GR18957Instrument$1
InnerClasses:
  com.oracle.truffle.js.test.instrumentation.GR18957$1
  public GR18957Instrument = com.oracle.truffle.js.test.instrumentation.GR18957$GR18957Instrument of com.oracle.truffle.js.test.instrumentation.GR18957
  public final Builder = org.graalvm.polyglot.Context$Builder of org.graalvm.polyglot.Context