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From "Torsten Curdt (JIRA)" <j...@apache.org>
Subject [jira] Commented: (JCI-53) Stack overflow on cross imports in commons-jci-janino
Date Sun, 02 Sep 2007 18:39:19 GMT

    [ https://issues.apache.org/jira/browse/JCI-53?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12524385
] 

Torsten Curdt commented on JCI-53:
----------------------------------

Arno, that's great news. Unfortunately the link is broken for me. And at

 http://fisheye.codehaus.org/changelog/janino/janino

I cannot see any changes committed since 30 July 2007. What am I missing?

> Stack overflow on cross imports in commons-jci-janino
> -----------------------------------------------------
>
>                 Key: JCI-53
>                 URL: https://issues.apache.org/jira/browse/JCI-53
>             Project: Commons JCI
>          Issue Type: Bug
>          Components: compiler janino
>    Affects Versions: 1.1
>            Reporter: Edson Tirelli
>            Assignee: Torsten Curdt
>            Priority: Blocker
>             Fix For: 1.1
>
>
> A stack overflow occurs when trying to compile classes with cross references using commons-jci-janino,
because an infinite recursion. The simple presence of cross reference import is enough to
cause the problem.
> Example: the following classes will recreate the problem:
> package test;
> import static test.Func2.func2;
> public class Func1 {
>    public static boolean func1() throws Exception {
>    return true;
>    }
> }
> package test;
> import static test.Func1.func1;
> public class Func2 {
>    public static boolean func2() throws Exception {
>    return true;
>    }
> } 
> The exception stack is:
> java.lang.StackOverflowError
> 	at org.codehaus.janino.Parser.parseAndExpression(Parser.java)
> 	at org.codehaus.janino.Parser.parseExclusiveOrExpression(Parser.java)
> 	at org.codehaus.janino.Parser.parseInclusiveOrExpression(Parser.java)
> 	at org.codehaus.janino.Parser.parseConditionalAndExpression(Parser.java)
> 	at org.codehaus.janino.Parser.parseConditionalOrExpression(Parser.java)
> 	at org.codehaus.janino.Parser.parseConditionalExpression(Parser.java)
> 	at org.codehaus.janino.Parser.parseAssignmentExpression(Parser.java)
> 	at org.codehaus.janino.Parser.parseExpression(Parser.java)
> 	at org.codehaus.janino.Parser.parseReturnStatement(Parser.java)
> 	at org.codehaus.janino.Parser.parseStatement(Parser.java)
> 	at org.codehaus.janino.Parser.parseBlockStatement(Parser.java)
> 	at org.codehaus.janino.Parser.parseBlockStatements(Parser.java)
> 	at org.codehaus.janino.Parser.parseBlock(Parser.java)
> 	at org.codehaus.janino.Parser.parseMethodBody(Parser.java)
> 	at org.codehaus.janino.Parser.parseMethodDeclarationRest(Parser.java)
> 	at org.codehaus.janino.Parser.parseClassBodyDeclaration(Parser.java)
> 	at org.codehaus.janino.Parser.parseClassBody(Parser.java)
> 	at org.codehaus.janino.Parser.parseClassDeclarationRest(Parser.java)
> 	at org.codehaus.janino.Parser.parsePackageMemberTypeDeclaration(Parser.java)
> 	at org.codehaus.janino.Parser.parseCompilationUnit(Parser.java)
> 	at org.drools.commons.jci.compilers.JaninoJavaCompiler$CompilingIClassLoader.findIClass(JaninoJavaCompiler.java:90)
> 	at org.codehaus.janino.IClassLoader.loadIClass(IClassLoader.java)
> 	at org.codehaus.janino.UnitCompiler.loadFullyQualifiedClass(UnitCompiler.java)
> 	at org.codehaus.janino.UnitCompiler.import2(UnitCompiler.java)
> 	at org.codehaus.janino.UnitCompiler.access$2(UnitCompiler.java)
> 	at org.codehaus.janino.UnitCompiler$1.visitSingleStaticImportDeclaration(UnitCompiler.java)
> 	at org.codehaus.janino.Java$CompilationUnit$SingleStaticImportDeclaration.accept(Java.java)
> 	at org.codehaus.janino.UnitCompiler.<init>(UnitCompiler.java)
> 	at org.drools.commons.jci.compilers.JaninoJavaCompiler$CompilingIClassLoader.findIClass(JaninoJavaCompiler.java:91)
> 	at org.codehaus.janino.IClassLoader.loadIClass(IClassLoader.java)
> 	at org.codehaus.janino.UnitCompiler.loadFullyQualifiedClass(UnitCompiler.java)
> 	at org.codehaus.janino.UnitCompiler.import2(UnitCompiler.java)
> 	at org.codehaus.janino.UnitCompiler.access$2(UnitCompiler.java)
> 	at org.codehaus.janino.UnitCompiler$1.visitSingleStaticImportDeclaration(UnitCompiler.java)
> 	at org.codehaus.janino.Java$CompilationUnit$SingleStaticImportDeclaration.accept(Java.java)
> 	at org.codehaus.janino.UnitCompiler.<init>(UnitCompiler.java)
> 	at org.drools.commons.jci.compilers.JaninoJavaCompiler$CompilingIClassLoader.findIClass(JaninoJavaCompiler.java:91)
> 	at org.codehaus.janino.IClassLoader.loadIClass(IClassLoader.java)
> 	at org.codehaus.janino.UnitCompiler.loadFullyQualifiedClass(UnitCompiler.java)
> 	at org.codehaus.janino.UnitCompiler.import2(UnitCompiler.java)
> 	at org.codehaus.janino.UnitCompiler.access$2(UnitCompiler.java)
> 	at org.codehaus.janino.UnitCompiler$1.visitSingleStaticImportDeclaration(UnitCompiler.java)
> 	at org.codehaus.janino.Java$CompilationUnit$SingleStaticImportDeclaration.accept(Java.java)
> 	at org.codehaus.janino.UnitCompiler.<init>(UnitCompiler.java)
> 	at org.drools.commons.jci.compilers.JaninoJavaCompiler$CompilingIClassLoader.findIClass(JaninoJavaCompiler.java:91)
> 	at org.codehaus.janino.IClassLoader.loadIClass(IClassLoader.java)
> 	at org.codehaus.janino.UnitCompiler.loadFullyQualifiedClass(UnitCompiler.java)
>         (... and the loop continues ... )
> Please note that the problem does not occur when using commons-jci-eclipse or when using
JANINO from command line:
> [etirelli@localhost test]$ ../janino-2.5.9/bin/janinoc test/*.java
> [etirelli@localhost test]$ 
> This problem is affecting JANINO support in the Drools project as described in ticket:
> http://jira.jboss.com/jira/browse/JBRULES-1013
> Thanks,
> Edson

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