[GROOVY-5689] ClassCastException Double->Float with -= += operators and closures

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.8.7
• Fix Version/s: 1.8.8, 2.0.2
• Environment: Ubuntu 12.04, SunJDK 1.6.0_u33 x64, groovy 1.8.7
• Assignee: Jochen Theodorou
• Reporter: Lukas Ruetz
• Created: 05/Sep/12 05:05
• Updated: 11/Sep/12 01:15
• Resolved: 07/Sep/12 11:03

Description

The ClassCastException is thrown only in combination of a -= (or +=) operator and a closure.

 
void doesNotWork() {
  float myFloat = 40f
  myFloat -= 20f
  println "doesNotWork() $myFloat" // the exception is thrown here, but because of the combination of the -= and the closure
  (0..1).each { i -> // this can be any closure - doesn't matter
    println "doesNotWork() in the closure: $myFloat"
  }
}

Did not occure with 1.8.3.