[GROOVY-10811] Missing errors for improper enum declaration

• Type: Bug
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Labels: enum

Language

groovy

• Assignee: Unassigned
• Reporter: Eric Milles
• Created: 04/Nov/22 13:47
• Updated: 27/Sep/24 15:12

Description

Consider the following:

final enum E {
  FOO;
  E(int i) {
    super()
  }
}

• Explicit abstract or final modifier is supposed to be an error because an enum is made abstract or final depending on what's declared: "It is a compile-time error if an enum declaration has the modifier abstract or final." https://docs.oracle.com/javase/specs/jls/se11/html/jls-8.html#jls-8.9

• The enum constant declaration "FOO" does not supply an argument, which results in a runtime error.

• The special constructor call "super()" is not allowed by Java and results in a runtime error in Groovy. "It is a compile-time error if a constructor declaration in an enum declaration contains a superclass constructor invocation statement (§8.8.7.1)."