[GROOVY-356] super used in method causes Verify error

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.0-beta-4
• Fix Version/s: 1.0-beta-5
• Environment: Version: 1.0-beta-4 JVM: 1.4.1_01-27; Mac OS X 10.3.3 powerbook 17" 1.33 GHz
• Assignee: Unassigned
• Reporter: Owen Densmore
• Created: 02/Apr/04 17:35
• Updated: 07/Apr/04 17:17
• Resolved: 07/Apr/04 17:17

Description

On the mail list, I asked about whether super was still broken and submitted the test case below. James responded "Sounds like a bytecode gen bug - would you mind raising a JIRA issue and we'll take a look real soon."

This is the test case:
SimpleModel.java
public class SimpleModel {
public String s;
public SimpleModel ()

{ s="SimpleModel"; }

public void setup(String str)

{ s=str; }

public void show()

{ System.out.println(s); }

}

This works fine from groovy:
tut.groovy:
#!/usr/bin/env groovy
public class TutModel extends SimpleModel {
int count;
public void TutModel()

{ count = 0; setup("TutModel"); }
}
SimpleModel simp = new SimpleModel()
simp.show()
simp.setup("Simp setup")
simp.show()
TutModel t = new TutModel()
t.show()
t.setup("t setup")
t.show()
simp.show()
..producing the correct output:
owen|~/src/groovy[735]: ./tut.groovy
SimpleModel
Simp setup
TutModel
t setup
Simp setup

But when I add an overriding method for setup:
tut.groovy:
#!/usr/bin/env groovy
public class TutModel extends SimpleModel {
int count;
public void TutModel() { count = 0; setup("TutModel"); }

public void setup(String str)

{ count += 1; super.setup(str); }

}
SimpleModel simp = new SimpleModel()
simp.show()
simp.setup("Simp setup")
simp.show()
TutModel t = new TutModel()
t.show()
t.setup("t setup")
t.show()
simp.show()
.. I get this:
owen|~/src/groovy[736]: ./tut.groovy
SimpleModel
Simp setup
Exception in thread "main" java.lang.VerifyError: (class: TutModel,
method: setup signature: (Ljava/lang/String;)V) Unable to pop operand
off an empty stack
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:140)
at tut.class$(tut.groovy)
at tut.run(tut.groovy:21)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
...