[GROOVY-3229] Can't subclass PrintWriter

• Type: Bug
• Status: Closed
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 1.6-beta-2
• Fix Version/s: 1.6-rc-1, 1.5.8, 1.7-beta-1
• Assignee: Jochen Theodorou
• Reporter: James P. White
• Created: 21/Dec/08 11:21
• Updated: 21/Dec/08 14:53
• Resolved: 21/Dec/08 14:53

Description

I'm sure this is a more general problem than this test case, but I was checking the 1.6 branch against IFCX Wings and discovered that some change within the last few weeks makes it impossible to subclass java.io.PrintWriter.

The error is:

org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed, 
/Users/jim/Projects/Groovy/groovy-svn/groovy-core/src/test/groovy/bugs/newbug.groovy: -1: 
The return type of java.lang.Appendable append(java.lang.CharSequence) 
in java.io.PrintWriter is incompatible with java.io.PrintWriter append(java.lang.CharSequence) 
in java.io.PrintWriter.
Node: org.codehaus.groovy.ast.MethodNode. At [-1:-1]  @ line -1, column -1.
1 error