[jboss-jira] [JBoss JIRA] Commented: (JBCL-142) Investigate issue with useLoadClassForParent=false and security manager logging

[ https://jira.jboss.org/jira/browse/JBCL-142?page=com.atlassian.jira.plugi... ] Adrian Brock commented on JBCL-142: ----------------------------------- The issue only occurs when there is a security manager and there is some access control logging and only because a class in stdio needs to load java.lang.Math which is not already loaded. It doesn't occur with useLoadClassForParent=true because loadClass() doesn't do any access control logging. Read the comments in the stacktrace from the bottom upwards to see what is happening. java.lang.ClassCircularityError: java/lang/Math <!-- Tries to load java/lang/Math again, resulting in CCE --> at org.jboss.stdio.WriterOutputStream.write(WriterOutputStream.java:102) at java.io.PrintStream.write(PrintStream.java:430) at sun.nio.cs.StreamEncoder.writeBytes(StreamEncoder.java:202) at sun.nio.cs.StreamEncoder.implWrite(StreamEncoder.java:263) at sun.nio.cs.StreamEncoder.write(StreamEncoder.java:106) at java.io.OutputStreamWriter.write(OutputStreamWriter.java:190) at java.io.BufferedWriter.flushBuffer(BufferedWriter.java:111) at java.io.PrintStream.write(PrintStream.java:476) at java.io.PrintStream.print(PrintStream.java:619) at java.io.PrintStream.println(PrintStream.java:756) at org.jboss.stdio.StdioContext$DelegatingPrintStream.println(StdioContext.java:297) <!-- Checking for the resource leads to do more logging --> at sun.security.util.Debug.println(Debug.java:134) at java.security.AccessControlContext.checkPermission(AccessControlContext.java:329) at java.security.AccessController.checkPermission(AccessController.java:546) at java.lang.SecurityManager.checkPermission(SecurityManager.java:532) at sun.misc.URLClassPath.check(URLClassPath.java:410) at sun.misc.URLClassPath$JarLoader.checkResource(URLClassPath.java:676) at sun.misc.URLClassPath$JarLoader.getResource(URLClassPath.java:759) at sun.misc.URLClassPath.getResource(URLClassPath.java:169) at sun.misc.URLClassPath.getResource(URLClassPath.java:221) at java.lang.ClassLoader.getBootstrapResource(ClassLoader.java:1151) at java.lang.ClassLoader.getResource(ClassLoader.java:1000) at java.lang.ClassLoader.getResource(ClassLoader.java:998) at java.lang.ClassLoader.getResource(ClassLoader.java:998) <!-- jboss-cl checks for java/lang/Math.class before locking the classloader --> at org.jboss.classloader.plugins.loader.ClassLoaderToLoaderAdapter$2.run(ClassLoaderToLoaderAdapter.java:112) at org.jboss.classloader.plugins.loader.ClassLoaderToLoaderAdapter$2.run(ClassLoaderToLoaderAdapter.java:1) at java.security.AccessController.doPrivileged(Native Method) at org.jboss.classloader.plugins.loader.ClassLoaderToLoaderAdapter.getResource(ClassLoaderToLoaderAdapter.java:107) at org.jboss.classloader.spi.ClassLoaderDomain.findLoaderFromParent(ClassLoaderDomain.java:678) at org.jboss.classloader.spi.ClassLoaderDomain.findBeforeLoader(ClassLoaderDomain.java:624) at org.jboss.classloader.spi.base.BaseClassLoaderDomain.findLoader(BaseClassLoaderDomain.java:344) at org.jboss.classloader.spi.base.BaseClassLoaderDomain.loadClass(BaseClassLoaderDomain.java:264) at org.jboss.classloader.spi.base.BaseClassLoaderDomain.loadClass(BaseClassLoaderDomain.java:1129) at org.jboss.classloader.spi.base.BaseClassLoader.loadClassFromDomain(BaseClassLoader.java:882) at org.jboss.classloader.spi.base.BaseClassLoader.doLoadClass(BaseClassLoader.java:523) at org.jboss.classloader.spi.base.BaseClassLoader.loadClass(BaseClassLoader.java:468) at java.lang.ClassLoader.loadClass(ClassLoader.java:248) <!-- stdio needs to load java.lang.Math --> at org.jboss.stdio.WriterOutputStream.write(WriterOutputStream.java:102) at java.io.PrintStream.write(PrintStream.java:430) at sun.nio.cs.StreamEncoder.writeBytes(StreamEncoder.java:202) at sun.nio.cs.StreamEncoder.implFlushBuffer(StreamEncoder.java:272) at sun.nio.cs.StreamEncoder.flushBuffer(StreamEncoder.java:85) at java.io.OutputStreamWriter.flushBuffer(OutputStreamWriter.java:168) at java.io.PrintStream.write(PrintStream.java:477) at java.io.PrintStream.print(PrintStream.java:619) at java.io.PrintStream.println(PrintStream.java:756) at org.jboss.stdio.StdioContext$DelegatingPrintStream.println(StdioContext.java:297) <!-- First access control logging after stdio is installed --> at sun.security.util.Debug.println(Debug.java:134) at java.security.AccessControlContext.checkPermission(AccessControlContext.java:329) at java.security.AccessController.checkPermission(AccessController.java:546) at java.lang.SecurityManager.checkPermission(SecurityManager.java:532) at java.lang.Thread.setContextClassLoader(Thread.java:1351) -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: https://jira.jboss.org/jira/secure/Administrators.jspa - For more information on JIRA, see: http://www.atlassian.com/software/jira