using of synthetic names in local class causes ClassFormatError

Name: ngR10089 Date: 05/24/2001



Java compiler jdk1.4.0beta-b65 creates class files rejected by VM. The test
below reproduces the bug.

> java -version
java version "1.4.0-beta"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.0-beta-b65)
Java HotSpot(TM) Client VM (build 1.4.0-beta-b65, mixed mode)

> javac -d . test.java
> java -Xfuture icls122.test
Exception in thread "main" java.lang.ClassFormatError: icls122/test$1$InnClass
(Repeative field name/signature)
at java.lang.ClassLoader.defineClass0(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:495)
at
java.security.SecureClassLoader.defineClass(SecureClassLoader.java:110)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:249)
at java.net.URLClassLoader.access$100(URLClassLoader.java:57)
at java.net.URLClassLoader$1.run(URLClassLoader.java:196)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:189)
at java.lang.ClassLoader.loadClass(ClassLoader.java:304)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:287)
at java.lang.ClassLoader.loadClass(ClassLoader.java:260)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
at icls122.test.meth(test.java:39)
at icls122.test.run(test.java:11)
at icls122.test.main(test.java:7)
>

-----------------test.java------------------
package icls122;
 
import java.io.PrintStream;
 
public class test {
public static void main(String args[]) {
System.exit(run(args, System.out) + 95/*STATUS_TEMP*/);
}
public static int run(String args[],PrintStream out) {
int res1, res2;
Intf ob = meth(1, 2);

res1 = ob.getFirst();
res2 = ob.getSecond();

if ( res1 == 1 && res2 == 2 )
return 0 /*STATUS_PASSED*/;
out.println("Failed: res1=" + res1 +
", res2=" + res2);
return 2 /*STATUS_FAILED*/;
}
interface Intf {
int getFirst();
int getSecond();
}
static Intf meth(final int prm1, final int zzz) {
class InnClass implements Intf {
Object val$prm1 = null;
int val$zzz = 10;
Object locVar;
public int getFirst() {
locVar = val$prm1;
return prm1;
}
public int getSecond() {
return zzz;
}
}
return new InnClass();
}
 }
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