This is a regression caused by adding support for 'this_class/super_class' entries - CODETOOLS-7903558:

JdisJasmWorks17221649995522723990.java (30:16) Error: Either name or Constant Pool index expected, got "<this_class> [85]"
  public Method this_class:"(Lorg/openjdk/asmtools/jasm/ClassData$CoreClasses$PLACE;Lorg/openjdk/asmtools/jasm/ConstCell;)V":"(Lorg/openjdk/asmtools/jasm/ClassData$CoreClasses$PLACE;Lorg/openjdk/asmtools/jasm/ConstCell<*>;)V"
                ^
JdisJasmWorks17221649995522723990.java (49:16) Error: Either name or Constant Pool index expected, got "<super_class> [86]"
  public Method super_class:"(Lorg/openjdk/asmtools/jasm/ClassData$CoreClasses$PLACE;Lorg/openjdk/asmtools/jasm/ConstCell;)V":"(Lorg/openjdk/asmtools/jasm/ClassData$CoreClasses$PLACE;Lorg/openjdk/asmtools/jasm/ConstCell<*>;)V"
                ^
JdisJasmWorks17221649995522723990.java (68:16) Error: Either name or Constant Pool index expected, got "<this_class> [85]"
  public Method this_class:"(Lorg/openjdk/asmtools/jasm/ConstCell;)V":"(Lorg/openjdk/asmtools/jasm/ConstCell<*>;)V"
                ^
JdisJasmWorks17221649995522723990.java (88:16) Error: Either name or Constant Pool index expected, got "<super_class> [86]"
  public Method super_class:"(Lorg/openjdk/asmtools/jasm/ConstCell;)V":"(Lorg/openjdk/asmtools/jasm/ConstCell<*>;)V"
                ^
JdisJasmWorks17221649995522723990.java (108:16) Error: Either name or Constant Pool index expected, got "<this_class> [85]"
  public Method this_class:"()Lorg/openjdk/asmtools/jasm/ConstCell;":"()Lorg/openjdk/asmtools/jasm/ConstCell<*>;"
                ^
JdisJasmWorks17221649995522723990.java (129:16) Error: Either name or Constant Pool index expected, got "<super_class> [86]"
  public Method super_class:"()Lorg/openjdk/asmtools/jasm/ConstCell;":"()Lorg/openjdk/asmtools/jasm/ConstCell<*>;"
                ^
6 error(s)
JdisJasmWorks14220440161711403130.java (93:56) Error: Either name or Constant Pool index expected, got "<this_class> [85]"
         invokevirtual Method ClassData$CoreClasses.this_class:"(Lorg/openjdk/asmtools/jasm/ClassData$CoreClasses$PLACE;Lorg/openjdk/asmtools/jasm/ConstCell;)V";
                                                        ^
1 error(s)
JdisJasmWorks7075826855074029768.java (6840:56) Error: Either name or Constant Pool index expected, got "<super_class> [86]"
         invokevirtual Method ClassData$CoreClasses.super_class:"(Lorg/openjdk/asmtools/jasm/ClassData$CoreClasses$PLACE;Lorg/openjdk/asmtools/jasm/ConstCell;)V";
                                                        ^
1 error(s)
JdisJasmWorks7929375517498511475.java (943:56) Error: Either name or Constant Pool index expected, got "<this_class> [85]"
         invokevirtual Method ClassData$CoreClasses.this_class:"()Lorg/openjdk/asmtools/jasm/ConstCell;";
                                                        ^
1 error(s)
/home/jvanek/git/asmtools/maven/target/classes/org/openjdk/asmtools/jasm/ClassData$CoreClasses.class