[GROOVY-3389] Field Hiding Behavior Regression

• Type: Bug
• Status: Closed
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 1.6
• Fix Version/s: 1.6.1, 1.7-beta-1
• Environment: Discovered running on Windows XP, JDK 1.6.0_07
• Assignee: Roshan Dawrani
• Reporter: Haw-Bin Chai
• Created: 02/Mar/09 09:37
• Updated: 07/Apr/09 23:33
• Resolved: 03/Mar/09 22:11

Description

Member hiding behavior has changed between 1.5.7 and 1.6 . Previous code which caused member hiding now does not.

class Foo {
    String bar
   
    void doIt() {
        def bar = new File('.')
       
        println bar instanceof File    // prints false (1.6), true (1.5.7)
        println bar instanceof String  // prints true (1.6), false (1.5.7)
    }
}

def foo = new Foo()
foo.doIt()

Roshan:

"""
Looks like a bug to me because

class Foo {
    String bar
    void doIt(File bar) {
        println bar instanceof File // returns true
    }
}

def foo = new Foo()
foo.doIt(new File('.'))

And it should be consistent in hiding behavior whethere it is a method parameter that is doing the hiding or a local, method-level variable.
"""

Jochen:

"""
that is clearly a bug that crept in unnoticed. Please fill an issue for it, this absolutely needs to be fixed for the next release
"""