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Bug 349386

Summary: ASTParser.newParser(AST.JLS3) fails with VerifyError
Product: [Eclipse Project] JDT Reporter: Tom Ball <tball>
Component: CoreAssignee: Olivier Thomann <Olivier_Thomann>
Status: CLOSED INVALID QA Contact:
Severity: major    
Priority: P3 CC: Olivier_Thomann
Version: 3.7Keywords: needinfo
Target Milestone: ---   
Hardware: All   
OS: Linux   
Whiteboard:

Description Tom Ball CLA 2011-06-14 19:26:49 EDT
Build Identifier: 3.7.0-M7 B53 (the jar is org.eclipse.jdt.core_3.7.0.v_B53.jar)

Running a translator that works with 3.6.2, on 3.7.7 the following error is thrown:


Exception in thread "main" java.lang.VerifyError: class org.eclipse.jdt.internal.compiler.parser.RecoveryScanner overrides final method getCurrentTokenSource.()[C
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:634)
	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
	at java.net.URLClassLoader.defineClass(URLClassLoader.java:277)
	at java.net.URLClassLoader.access$000(URLClassLoader.java:73)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:212)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:321)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
	at com.google.devtools.j2objc.J2ObjC.translate(J2ObjC.java:89)
	at com.google.devtools.j2objc.J2ObjC.main(J2ObjC.java:308)


Reproducible: Always

Steps to Reproduce:
1. call ASTParser.newParser(AST.JLS3) (no setup needed).

Here is a test file it fails with:


import org.eclipse.jdt.core.dom.AST;
import org.eclipse.jdt.core.dom.ASTParser;

public class JDTVerifyErrorTest {

  public static void main(String[] args) {
    ASTParser.newParser(AST.JLS3);
  }
}
Comment 1 Olivier Thomann CLA 2011-06-15 14:55:44 EDT
I could not reproduce.
Please provide a list of all installed bundles.

Could you please try the same code with Eclipse 3.7M7 that has nothing else installed ?

Thanks.
Comment 2 Olivier Thomann CLA 2011-06-17 11:51:42 EDT
The method getCurrentTokenSource() on the class Scanner is not final since 3.2M5. So you must have incompatible versions installed somehow in your workspace.
It would be good to find out what you have installed in your workspace that could cause this failure.
Where did you find the class com.google.devtools.j2objc.J2ObjC ?
Comment 3 Tom Ball CLA 2011-06-17 12:46:47 EDT
I had a weird build problem, which pulled in incompatible jars.  Sorry for the noise...