Mantis Bugtracker
Main | My View | View Issues | Change Log | Docs
  

Viewing Issue Advanced Details [ Jump to Notes ] [ View Simple ] [ Issue History ] [ Print ]
ID Category Severity Reproducibility Date Submitted Last Update
0003840 [Quercus] major always 01-07-10 05:05 02-22-10 04:34
Reporter rajesh View Status public  
Assigned To
Priority normal Resolution open Platform
Status new   OS
Projection none   OS Version
ETA none Fixed in Version Product Version
  Product Build
Summary 0003840: com.caucho.quercus.QuercusModuleException: java.lang.StackOverflowError
Description I have successfully installed wordpress tomcat and quercus.. im getting the following error while running the application.I have attached the document with screenshot of the screens..
Steps To Reproduce
Additional Information
Attached Files  screenshot.doc [^] (89,600 bytes) 01-07-10 05:05

- Relationships

- Notes
(0004445)
lamsap
02-22-10 04:34
edited on: 02-22-10 04:37

 I have this issue too. Resin 3.1.9, Wordpress 2.9.2.

Boils down to a PHP4 class constructor calling a PHP5 class constructor in WP_Widget (wp-includes/widgets.php), and (I don't know why) it goes into a StackOverflow. Is the constructor being called twice somehow?

Starting from wp-includes/plugin.php:336 (via the stack trace):

function do_action($tag, $arg = '') { ... }

the do { } while () loop at the end of the function is the problem. I tracked it down to the loading of 'wp_maybe_load_widgets'.

Looking at functions.php:wp_maybe_load_widgets we see a require_once:

function wp_maybe_load_widgets() {
        if ( ! apply_filters('load_default_widgets', true) )
                return;
        require_once( ABSPATH . WPINC . '/default-widgets.php' );
        add_action( '_admin_menu', 'wp_widgets_add_menu' );
}

Looking at default-widgets.php, at the last line it has:
add_action('init', 'wp_widgets_init', 1);

Comment that out, and the exception goes away. So, following the rabbit a bit further... All widgets are classes, and the default constructor is in WP_Widget in widgets.php:

        /**
         * PHP4 constructor
         */
        function WP_Widget( $id_base = false, $name, $widget_options = array(), $control_options = array() ) {
              $this->__construct( $id_base, $name, $widget_options, $control_options );
        }

        /**
         * PHP5 constructor
         *
         * @param string $id_base Optional Base ID for the widget, lower case,
         * if left empty a portion of the widget's class name will be used. Has to be unique.
         * @param string $name Name for the widget displayed on the configuration page.
         * @param array $widget_options Optional Passed to wp_register_sidebar_widget()
         * - description: shown on the configuration page
         * - classname
         * @param array $control_options Optional Passed to wp_register_widget_control()
         * - width: required if more than 250px
         * - height: currently not used but may be needed in the future
         */
        function __construct( $id_base = false, $name, $widget_options = array(), $control_options = array() ) {
                $this->id_base = empty($id_base) ? preg_replace( '/(wp_)?widget_/', '', strtolower(get_class($this)) ) : strtolower($id_base);
                $this->name = $name;
                $this->option_name = 'widget_' . $this->id_base;
                $this->widget_options = wp_parse_args( $widget_options, array('classname' => $this->option_name) );
                $this->control_options = wp_parse_args( $control_options, array('id_base' => $this->id_base) );
        }

Note the PHP4 constructor calls the PHP5 constructor. If I comment out the call, the code works:

        function WP_Widget( $id_base = false, $name, $widget_options = array(), $control_options = array() ) {
           // $this->__construct( $id_base, $name, $widget_options, $control_options );
        }

While I'm not sure of how this code should behave (I haven't used PHP in years), I guess there may be a difference in how Quercus and the standard PHP handle class construction?

Hope that helps...

Stacktrace:

com.caucho.quercus.QuercusModuleException: java.lang.StackOverflowError
    at com.caucho.quercus.QuercusModuleException.create(QuercusModuleException.java:64)
    at com.caucho.quercus.module.StaticFunction.invoke(StaticFunction.java:159)
    at com.caucho.quercus.env.JavaInvoker.callMethod(JavaInvoker.java:606)
    at com.caucho.quercus.env.JavaInvoker.call(JavaInvoker.java:541)
    at com.caucho.quercus.expr.FunctionExpr.evalImpl(FunctionExpr.java:182)
    at com.caucho.quercus.expr.FunctionExpr.eval(FunctionExpr.java:126)
    at com.caucho.quercus.program.ExprStatement.execute(ExprStatement.java:64)
    at com.caucho.quercus.program.IfStatement.execute(IfStatement.java:81)
    at com.caucho.quercus.program.BlockStatement.execute(BlockStatement.java:105)
    at com.caucho.quercus.program.IfStatement.execute(IfStatement.java:81)
    at com.caucho.quercus.program.ForeachStatement.execute(ForeachStatement.java:99)
    at com.caucho.quercus.program.BlockStatement.execute(BlockStatement.java:105)
    at com.caucho.quercus.program.DoStatement.execute(DoStatement.java:68)
    at com.caucho.quercus.program.BlockStatement.execute(BlockStatement.java:105)
    at com.caucho.quercus.program.Function.callImpl(Function.java:352)
    at com.caucho.quercus.program.Function.call(Function.java:292)
    at com.caucho.quercus.expr.FunctionExpr.evalImpl(FunctionExpr.java:182)
    at com.caucho.quercus.expr.FunctionExpr.eval(FunctionExpr.java:126)
    at com.caucho.quercus.program.ExprStatement.execute(ExprStatement.java:64)
    at com.caucho.quercus.program.BlockStatement.execute(BlockStatement.java:105)
    at com.caucho.quercus.program.QuercusProgram.execute(QuercusProgram.java:272)
    at com.caucho.quercus.page.InterpretedPage.execute(InterpretedPage.java:70)
    at com.caucho.quercus.env.Env.include(Env.java:3742)
    at com.caucho.quercus.env.Env.includeOnce(Env.java:3691)
    at com.caucho.quercus.expr.IncludeOnceExpr.eval(IncludeOnceExpr.java:88)
    at com.caucho.quercus.program.ExprStatement.execute(ExprStatement.java:64)
    at com.caucho.quercus.program.BlockStatement.execute(BlockStatement.java:105)
    at com.caucho.quercus.program.QuercusProgram.execute(QuercusProgram.java:272)
    at com.caucho.quercus.page.InterpretedPage.execute(InterpretedPage.java:70)
    at com.caucho.quercus.env.Env.include(Env.java:3742)
    at com.caucho.quercus.env.Env.includeOnce(Env.java:3691)
    at com.caucho.quercus.expr.IncludeOnceExpr.eval(IncludeOnceExpr.java:88)
    at com.caucho.quercus.program.ExprStatement.execute(ExprStatement.java:64)
    at com.caucho.quercus.program.IfStatement.execute(IfStatement.java:81)
    at com.caucho.quercus.program.BlockStatement.execute(BlockStatement.java:105)
    at com.caucho.quercus.program.QuercusProgram.execute(QuercusProgram.java:272)
    at com.caucho.quercus.page.InterpretedPage.execute(InterpretedPage.java:70)
    at com.caucho.quercus.env.Env.include(Env.java:3742)
    at com.caucho.quercus.expr.IncludeExpr.eval(IncludeExpr.java:86)
    at com.caucho.quercus.program.ExprStatement.execute(ExprStatement.java:64)
    at com.caucho.quercus.program.BlockStatement.execute(BlockStatement.java:105)
    at com.caucho.quercus.program.QuercusProgram.execute(QuercusProgram.java:272)
    at com.caucho.quercus.page.InterpretedPage.execute(InterpretedPage.java:70)
    at com.caucho.quercus.page.QuercusPage.executeTop(QuercusPage.java:119)
    at com.caucho.quercus.servlet.ResinQuercusServlet.service(ResinQuercusServlet.java:149)
    at com.caucho.quercus.servlet.QuercusServlet.service(QuercusServlet.java:355)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:91)
    at com.caucho.server.dispatch.ServletFilterChain.doFilter(ServletFilterChain.java:103)
    at com.caucho.server.webapp.WebAppFilterChain.doFilter(WebAppFilterChain.java:187)
    at com.caucho.server.dispatch.ServletInvocation.service(ServletInvocation.java:265)
    at com.caucho.server.http.HttpRequest.handleRequest(HttpRequest.java:273)
    at com.caucho.server.port.TcpConnection.run(TcpConnection.java:682)
    at com.caucho.util.ThreadPool$Item.runTasks(ThreadPool.java:743)
    at com.caucho.util.ThreadPool$Item.run(ThreadPool.java:662)
    at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.StackOverflowError
    at com.caucho.quercus.program.BlockStatement.execute(BlockStatement.java:105)
    at com.caucho.quercus.program.Function.callImpl(Function.java:352)
    at com.caucho.quercus.program.Function.callRef(Function.java:302)
    at com.caucho.quercus.expr.FunctionExpr.evalImpl(FunctionExpr.java:178)
    at com.caucho.quercus.expr.FunctionExpr.evalRef(FunctionExpr.java:138)
    at com.caucho.quercus.expr.AssignRefExpr.eval(AssignRefExpr.java:74)
    at com.caucho.quercus.program.ExprStatement.execute(ExprStatement.java:64)
    at com.caucho.quercus.program.BlockStatement.execute(BlockStatement.java:105)
    at com.caucho.quercus.program.Function.callImpl(Function.java:352)
    at com.caucho.quercus.program.Function.call(Function.java:292)
    at com.caucho.quercus.expr.FunctionExpr.evalImpl(FunctionExpr.java:182)
    at com.caucho.quercus.expr.FunctionExpr.eval(FunctionExpr.java:126)
    at com.caucho.quercus.program.ReturnStatement.execute(ReturnStatement.java:68)
    at com.caucho.quercus.program.Function.callImpl(Function.java:352)
    at com.caucho.quercus.program.Function.call(Function.java:292)
    at com.caucho.quercus.expr.FunctionExpr.evalImpl(FunctionExpr.java:182)
    at com.caucho.quercus.expr.FunctionExpr.eval(FunctionExpr.java:126)
    at com.caucho.quercus.expr.Expr.evalArg(Expr.java:411)
    at com.caucho.quercus.expr.ArrayFunExpr.eval(ArrayFunExpr.java:108)
    at com.caucho.quercus.expr.Expr.evalCopy(Expr.java:398)
    at com.caucho.quercus.expr.AssignExpr.eval(AssignExpr.java:86)
    at com.caucho.quercus.program.ExprStatement.execute(ExprStatement.java:64)
    at com.caucho.quercus.program.BlockStatement.execute(BlockStatement.java:105)
    at com.caucho.quercus.program.Function.callImpl(Function.java:352)
    at com.caucho.quercus.program.Function.call(Function.java:292)
    at com.caucho.quercus.program.AbstractFunction.callMethod(AbstractFunction.java:309)
    at com.caucho.quercus.env.ObjectExtValue.callMethod(ObjectExtValue.java:602)
    at com.caucho.quercus.expr.MethodCallExpr.eval(MethodCallExpr.java:104)
    at com.caucho.quercus.program.ExprStatement.execute(ExprStatement.java:64)
    at com.caucho.quercus.program.Function.callImpl(Function.java:352)
    at com.caucho.quercus.program.Function.call(Function.java:292)
// lots of lines removed
    at com.caucho.quercus.program.AbstractFunction.callMethod(AbstractFunction.java:309)
    at com.caucho.quercus.env.ObjectExtValue.callMethod(ObjectExtValue.java:602)
    at com.caucho.quercus.expr.MethodCallExpr.eval(MethodCallExpr.java:104)
    at com.caucho.quercus.program.ExprStatement.execute(ExprStatement.java:64)
    at com.caucho.quercus.program.BlockStatement.execute(BlockStatement.java:105)
    at com.caucho.quercus.program.Function.callImpl(Function.java:352)
    at com.caucho.quercus.program.Function.call(Function.java:292)
    at com.caucho.quercus.program.AbstractFunction.callMethod(AbstractFunction.java:309)
    at com.caucho.quercus.env.ObjectExtValue.callMethod(ObjectExtValue.java:602)
    at com.caucho.quercus.expr.MethodCallExpr.eval(MethodCallExpr.java:104)
    at com.caucho.quercus.program.ExprStatement.execute(ExprStatement.java:64)
    at com.caucho.quercus.program.Function.callImpl(Function.java:352)
    at com.caucho.quercus.program.Function.call(Function.java:292)
    at com.caucho.quercus.program.AbstractFunction.callMethod(AbstractFunction.java:309)
    at com.caucho.quercus.env.ObjectExtValue.callMethod(ObjectExtValue.java:602)
    at com.caucho.quercus.expr.MethodCallExpr.eval(MethodCallExpr.java:104)
    at com.caucho.quercus.program.ExprStatement.execute(ExprStatement.java:64)
    at com.caucho.quercus.program.BlockStatement.execute(BlockStatement.java:105)
    at .do_action(/usr/local/resin/webapps/ROOT/blog/wp-includes/plugin.php:337)
 

- Issue History
Date Modified Username Field Change
01-07-10 05:05 rajesh New Issue
01-07-10 05:05 rajesh File Added: screenshot.doc
01-07-10 05:05 rajesh Issue Monitored: rajesh
02-22-10 04:34 lamsap Note Added: 0004445
02-22-10 04:37 lamsap Note Edited: 0004445
02-23-10 11:17 lamsap Issue Monitored: lamsap

Mantis 1.0.0rc3[^]
Copyright © 2000 - 2005 Mantis Group
33 total queries executed.
26 unique queries executed.
Powered by Mantis Bugtracker