Name: gm110360 Date: 10/14/2003
FULL PRODUCT VERSION :
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_01-b06)
Java HotSpot(TM) Client VM (build 1.4.2_01-b06, mixed mode)
FULL OS VERSION :
Microsoft Windows 2000 [Version 5.00.2195]
A DESCRIPTION OF THE PROBLEM :
I am having a simple generic class wrapping a generic vector, see below.
The compiler crashes with an 'assertion failed' when writing code. If I replace the foreach loop with a semantically equivalent while loop and an iterator, it works fine.
STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
export J2SE14=c:/Programme/java/j2sdk1.4.2_01
export JSR14DISTR=c:/Programme/java/adding_generics-2_2-ea
$JSR14DISTR/scripts/javac Test.java
EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
compiled class file
ACTUAL -
compiler assertion fails
ERROR MESSAGES/STACK TRACES THAT OCCUR :
An exception has occurred in the compiler (1.4.2_01). Please file a bug at the Java Developer Connection (http://java.sun.com/cgi-bin/bugreport.cgi) after checking the Bug Parade for duplicates. Include your program and the following diagnostic in your report. Thank you.
java.lang.AssertionError: xClassName
at com.sun.tools.javac.jvm.ClassWriter.xClassName(ClassWriter.java:384)
at com.sun.tools.javac.jvm.ClassWriter.writePool(ClassWriter.java:473)
at com.sun.tools.javac.jvm.ClassWriter.writeClassFile(ClassWriter.java:1002)
at com.sun.tools.javac.jvm.ClassWriter.writeClass(ClassWriter.java:883)
at com.sun.tools.javac.main.JavaCompiler.genCode(JavaCompiler.java:316)
at com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:455)
at com.sun.tools.javac.main.Main.compile(Main.java:520)
at com.sun.tools.javac.Main.compile(Main.java:41)
at com.sun.tools.javac.Main.main(Main.java:32)
REPRODUCIBILITY :
This bug can be reproduced always.
---------- BEGIN SOURCE ----------
import java.util.Vector;
public class Test<Base> {
private Vector<Base> columnsByIndex = new Vector<Base>();
public void print() {
// this loop will crash with a compiler error
for(Base base : columnsByIndex) {
//...
}
/**
// this loop - which does the same thing - works
java.util.Iterator<Base> bases = columnsByIndex.iterator();
while (bases.hasNext()) {
Base base = bases.next();
// ...
}
*/
}
}
---------- END SOURCE ----------
CUSTOMER SUBMITTED WORKAROUND :
use the while loop
(Incident Review ID: 215657)
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