FULL PRODUCT VERSION :
$ $JAVA_HOME/bin/java -version
java version "1.7.0"
Java(TM) SE Runtime Environment (build 1.7.0-b147)
Java HotSpot(TM) 64-Bit Server VM (build 21.0-b17, mixed mode)


ADDITIONAL OS VERSION INFORMATION :
Windows 7 64 bit enterprise

EXTRA RELEVANT SYSTEM CONFIGURATION :
cygwin
maven 3
java sdk 7
apache sling

A DESCRIPTION OF THE PROBLEM :
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1:17.330s
[INFO] Finished at: Wed Aug 15 21:46:26 CEST 2012
[INFO] Final Memory: 129M/362M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:2.5.1:compile (default-compile) on project org.apache.sling.auth.openid: Compilation failure
[ERROR] Failure executing javac, but could not parse the error:
[ERROR] An exception has occurred in the compiler (1.7.0). Please file a bug at the Java Developer Connection (http://java.sun.com/webapps/bugreport) after checking the Bug Parade for duplicates. Include your program and the following diagnostic in your report. Thank you.
[ERROR] java.lang.AssertionError: java.lang.NullPointerException
[ERROR] at com.sun.tools.javac.code.Symbol$VarSymbol.getConstValue(Symbol.java:1005)
[ERROR] at com.sun.tools.javac.comp.Attr.checkInit(Attr.java:2627)
[ERROR] at com.sun.tools.javac.comp.Attr.visitSelect(Attr.java:2285)
[ERROR] at com.sun.tools.javac.tree.JCTree$JCFieldAccess.accept(JCTree.java:1677)
[ERROR] at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:431)
[ERROR] at com.sun.tools.javac.comp.Attr.attribTree(Attr.java:418)
[ERROR] at com.sun.tools.javac.comp.Attr.attribExpr(Attr.java:449)
[ERROR] at com.sun.tools.javac.comp.Annotate.enterAttributeValue(Annotate.java:203)
[ERROR] at com.sun.tools.javac.comp.Annotate.enterAttributeValue(Annotate.java:243)
[ERROR] at com.sun.tools.javac.comp.Annotate.enterAnnotation(Annotate.java:181)
[ERROR] at com.sun.tools.javac.comp.MemberEnter.enterAnnotations(MemberEnter.java:778)
[ERROR] at com.sun.tools.javac.comp.MemberEnter.access$300(MemberEnter.java:56)
[ERROR] at com.sun.tools.javac.comp.MemberEnter$5.enterAnnotation(MemberEnter.java:746)
[ERROR] at com.sun.tools.javac.comp.Annotate.flush(Annotate.java:109)
[ERROR] at com.sun.tools.javac.comp.Annotate.enterDone(Annotate.java:101)
[ERROR] at com.sun.tools.javac.comp.Enter.complete(Enter.java:510)
[ERROR] at com.sun.tools.javac.comp.Enter.main(Enter.java:469)
[ERROR] at com.sun.tools.javac.main.JavaCompiler.enterTrees(JavaCompiler.java:929)
[ERROR] at com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:824)
[ERROR] at com.sun.tools.javac.main.Main.compile(Main.java:417)
[ERROR] at com.sun.tools.javac.main.Main.compile(Main.java:331)
[ERROR] at com.sun.tools.javac.main.Main.compile(Main.java:322)
[ERROR] at com.sun.tools.javac.Main.compile(Main.java:94)
[ERROR] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[ERROR] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
[ERROR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
[ERROR] at java.lang.reflect.Method.invoke(Method.java:601)
[ERROR] at org.codehaus.plexus.compiler.javac.JavacCompiler.compileInProcess0(JavacCompiler.java:551)
[ERROR] at org.codehaus.plexus.compiler.javac.JavacCompiler.compileInProcess(JavacCompiler.java:526)
[ERROR] at org.codehaus.plexus.compiler.javac.JavacCompiler.compile(JavacCompiler.java:167)
[ERROR] at org.apache.maven.plugin.AbstractCompilerMojo.execute(AbstractCompilerMojo.java:678)
[ERROR] at org.apache.maven.plugin.CompilerMojo.execute(CompilerMojo.java:128)
[ERROR] at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101)
[ERROR] at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209)
[ERROR] at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
[ERROR] at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
[ERROR] at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84)
[ERROR] at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59)
[ERROR] at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183)
[ERROR] at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161)
[ERROR] at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:320)
[ERROR] at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)
[ERROR] at org.apache.maven.cli.MavenCli.execute(MavenCli.java:537)
[ERROR] at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196)
[ERROR] at org.apache.maven.cli.MavenCli.main(MavenCli.java:141)
[ERROR] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[ERROR] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
[ERROR] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
[ERROR] at java.lang.reflect.Method.invoke(Method.java:601)
[ERROR] at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:290)
[ERROR] at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230)
[ERROR] at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:409)
[ERROR] at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:352)
[ERROR] Caused by: java.lang.NullPointerException
[ERROR] at com.sun.tools.javac.code.Lint$AugmentVisitor.augment(Lint.java:290)
[ERROR] at com.sun.tools.javac.code.Lint.augment(Lint.java:82)
[ERROR] at com.sun.tools.javac.comp.Attr.attribLazyConstantValue(Attr.java:597)
[ERROR] at com.sun.tools.javac.code.Symbol$VarSymbol$1.call(Symbol.java:971)
[ERROR] at com.sun.tools.javac.code.Symbol$VarSymbol.getConstValue(Symbol.java:1003)
[ERROR] ... 52 more
[ERROR] -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException
[ERROR]
[ERROR] After correcting the problems, you can resume the build with the command
[ERROR] mvn <goals> -rf :org.apache.sling.auth.openid


STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Download apache sling from svn trunk e.g.

http://sling.apache.org/site/getting-and-building-sling.html

http://sling.apache.org/site/project-information.html#ProjectInformation-ProjectInformationsource



REPRODUCIBILITY :
This bug can be reproduced always.