[GROOVY-6573] TailRecursive creates compilation error

• Type: Bug
• Status: Closed
• Priority: Blocker
• Resolution: Fixed
• Fix Version/s: 2.3.0-beta-1
• Environment: Debian Sid (aka Unstable), Groovy master 48b650edd3473cdcfe8b1f11667f005bd2bbaf92 using indy artefacts.
• Assignee: Cédric Champeau
• Reporter: Dr. Russel Winder
• Created: 14/Feb/14 06:07
• Updated: 05/Apr/14 00:01
• Resolved: 16/Feb/14 10:15

Description

The code:

@TailRecursive
  private static BigInteger iterate(final BigInteger i, final BigInteger a, final BigInteger b) {
    i < 1 ? a : iterate(i - 1, b, a + b)
  }

compiles and works fine with the @TailRecursive commented out. With it in place:

org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:
file:/home/users/russel/Progs/Applications/Fibonacci/Groovy/Fibonacci.groovy: 43: Apparent variable '__b__' was found in a static scope but doesn't refer to a local variable, static field or class. Possible causes:
You attempted to reference a variable in the binding or an instance variable from a static context.
You misspelled a classname or statically imported field. Please check the spelling.
You attempted to use a method '__b__' but left out brackets in a place not allowed by the grammar.
 @ line 43, column 32.
       i < 1 ? a : iterate(i - 1, b, a + b)
                                  ^

1 error