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Home » Language IDEs » PHP Development Tools (PDT) » Debugger fails with Segmentation faults
Debugger fails with Segmentation faults [message #98829] Sat, 20 June 2009 20:08
Antoine Solutions is currently offline Antoine SolutionsFriend
Messages: 1
Registered: July 2009
Junior Member
When I am debugging in PDT, Apache consistently shows the following in the
error log file:

[Zend Debugger] Cannot receive start command
[Zend Debugger] Cannot send message

These messages aren't stopping me from debugging. I was just curious as
to what they mean and if they are important.

When I visit a page with AJAX calls, Apache shows the following in the
error log file:

[Sat Jun 20 11:39:57 2009] [notice] child pid 5587 exit signal
Segmentation fault (11)

I am not 100% sure the AJAX calls are causing the problem, but they never
complete due to these errors and this is the only difference I can see
between the pages I can debug vs the pages I cant' due to this error.

I am using the following setup
OS: Fedora 10 with latest updates
Eclipse: eclipse-php-galileo-RC4-linux-gtk.tar.gz with latest updates
Debugger: ZendDebugger-5.2.15-linux-glibc23-i386.tar.gz

ZendDebugger php configuration file:
; Enable Zend Debugger extension module
zend_extension=/usr/lib/php/modules/ZendDebugger.so
[zend_debugger]
zend_debugger.allow_hosts = 192.168.1.48
zend_debugger.expose_remotely = always

Apache Error Log file
[Sat Jun 20 11:38:05 2009] [notice] suEXEC mechanism enabled (wrapper:
/usr/sbin/suexec)
[Sat Jun 20 11:38:05 2009] [notice] Digest: generating secret for digest
authentication ...
[Sat Jun 20 11:38:05 2009] [notice] Digest: done
[Sat Jun 20 11:38:05 2009] [notice] Apache/2.2.11 (Unix) DAV/2 PHP/5.2.9
mod_ssl/2.2.11 OpenSSL/0.9.8g configured -- resuming normal operations
[Zend Debugger] Cannot receive start command
[Zend Debugger] Cannot send message
[Zend Debugger] Cannot receive start command
[Zend Debugger] Cannot receive start command
[Zend Debugger] Cannot send message
[Zend Debugger] Cannot receive start command
[Zend Debugger] Cannot send message
[Zend Debugger] Cannot receive start command
[Zend Debugger] Cannot send message
[Zend Debugger] Cannot receive start command
[Zend Debugger] Cannot send message
[Zend Debugger] Cannot receive start command
[Zend Debugger] Cannot send message
[Sat Jun 20 11:39:57 2009] [notice] child pid 5587 exit signal
Segmentation fault (11)
[Sat Jun 20 11:39:57 2009] [notice] child pid 5589 exit signal
Segmentation fault (11)
[Sat Jun 20 11:39:57 2009] [notice] child pid 5729 exit signal
Segmentation fault (11)
[Sat Jun 20 12:50:53 2009] [notice] child pid 5588 exit signal
Segmentation fault (11)
[Sat Jun 20 12:50:53 2009] [notice] child pid 5591 exit signal
Segmentation fault (11)
[Sat Jun 20 12:50:54 2009] [notice] child pid 5586 exit signal
Segmentation fault (11)

Eclipse log file:
!SESSION 2009-06-20 11:28:33.310
-----------------------------------------------
eclipse.buildId=I20090611-1540
java.version=1.6.0_0
java.vendor=Sun Microsystems Inc.
BootLoader constants: OS=linux, ARCH=x86, WS=gtk, NL=en_US
Framework arguments: -product org.eclipse.epp.package.php.product
Command-line arguments: -os linux -ws gtk -arch x86 -product
org.eclipse.epp.package.php.product

!ENTRY org.eclipse.equinox.p2.repository 2 0 2009-06-20 11:28:47.903
!MESSAGE Server returned lastModified <= 0 for
http://subclipse.tigris.org/update_1.4.x/content.xml

!ENTRY org.eclipse.osgi 2 0 2009-06-20 11:28:50.298
!MESSAGE While loading class
" org.eclipse.rse.ui.SystemPreferencesManager$ModelChangeListe ner ", thread
"Thread[Worker-7,5,main]" timed out waiting (5000ms) for thread
"Thread[Worker-6,5,main]" to finish starting bundle
"org.eclipse.rse.ui_3.1.0.v200905272300 [223]". To avoid deadlock, thread
"Thread[Worker-7,5,main]" is proceeding but
" org.eclipse.rse.ui.SystemPreferencesManager$ModelChangeListe ner " may not
be fully initialized.
!STACK 0
org.osgi.framework.BundleException: State change in progress for bundle
" reference:file:plugins/org.eclipse.rse.ui_3.1.0.v20090527230 0.jar " by
thread "Worker-6".
at
org.eclipse.osgi.framework.internal.core.AbstractBundle.begi nStateChange(AbstractBundle.java:1073)
at
org.eclipse.osgi.framework.internal.core.AbstractBundle.star t(AbstractBundle.java:278)
at
org.eclipse.osgi.framework.util.SecureAction.start(SecureAct ion.java:408)
at
org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter .postFindLocalClass(EclipseLazyStarter.java:111)
at
org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLoc alClass(ClasspathManager.java:449)
at
org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.fin dLocalClass(DefaultClassLoader.java:211)
at
org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass (BundleLoader.java:376)
at
org.eclipse.osgi.internal.loader.BundleLoader.findClassInter nal(BundleLoader.java:452)
at
org.eclipse.osgi.internal.loader.BundleLoader.findClass(Bund leLoader.java:405)
at
org.eclipse.osgi.internal.loader.BundleLoader.findClass(Bund leLoader.java:393)
at
org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loa dClass(DefaultClassLoader.java:105)
at java.lang.ClassLoader.loadClass(ClassLoader.java:268)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:336 )
at
org.eclipse.rse.ui.SystemPreferencesManager$1.run(SystemPref erencesManager.java:510)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)
Caused by:
org.eclipse.osgi.framework.internal.core.AbstractBundle$Bund leStatusException
... 15 more
Root exception:
org.eclipse.osgi.framework.internal.core.AbstractBundle$Bund leStatusException
at
org.eclipse.osgi.framework.internal.core.AbstractBundle.begi nStateChange(AbstractBundle.java:1073)
at
org.eclipse.osgi.framework.internal.core.AbstractBundle.star t(AbstractBundle.java:278)
at
org.eclipse.osgi.framework.util.SecureAction.start(SecureAct ion.java:408)
at
org.eclipse.core.runtime.internal.adaptor.EclipseLazyStarter .postFindLocalClass(EclipseLazyStarter.java:111)
at
org.eclipse.osgi.baseadaptor.loader.ClasspathManager.findLoc alClass(ClasspathManager.java:449)
at
org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.fin dLocalClass(DefaultClassLoader.java:211)
at
org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass (BundleLoader.java:376)
at
org.eclipse.osgi.internal.loader.BundleLoader.findClassInter nal(BundleLoader.java:452)
at
org.eclipse.osgi.internal.loader.BundleLoader.findClass(Bund leLoader.java:405)
at
org.eclipse.osgi.internal.loader.BundleLoader.findClass(Bund leLoader.java:393)
at
org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loa dClass(DefaultClassLoader.java:105)
at java.lang.ClassLoader.loadClass(ClassLoader.java:268)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:336 )
at
org.eclipse.rse.ui.SystemPreferencesManager$1.run(SystemPref erencesManager.java:510)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)

!ENTRY org.eclipse.osgi 2 1 2009-06-20 11:33:08.611
!MESSAGE NLS unused message: missingOneOfTwoAttributes in:
org.eclipse.wst.common.project.facet.core.internal.FacetedPr ojectFrameworkImpl

!ENTRY org.eclipse.osgi 2 1 2009-06-20 11:33:08.612
!MESSAGE NLS unused message: categoryNotDefined in:
org.eclipse.wst.common.project.facet.core.internal.FacetedPr ojectFrameworkImpl

!ENTRY org.eclipse.osgi 2 1 2009-06-20 11:33:08.612
!MESSAGE NLS unused message: actionNotDefined in:
org.eclipse.wst.common.project.facet.core.internal.FacetedPr ojectFrameworkImpl

!ENTRY org.eclipse.osgi 2 1 2009-06-20 11:33:08.612
!MESSAGE NLS unused message: actionAlreadyDefined in:
org.eclipse.wst.common.project.facet.core.internal.FacetedPr ojectFrameworkImpl

!ENTRY org.eclipse.osgi 2 1 2009-06-20 11:33:08.612
!MESSAGE NLS unused message: presetNotDefined in:
org.eclipse.wst.common.project.facet.core.internal.FacetedPr ojectFrameworkImpl

!ENTRY org.eclipse.osgi 2 1 2009-06-20 11:33:08.612
!MESSAGE NLS unused message: templateNotDefined in:
org.eclipse.wst.common.project.facet.core.internal.FacetedPr ojectFrameworkImpl

!ENTRY org.eclipse.osgi 2 1 2009-06-20 11:33:08.613
!MESSAGE NLS unused message: invalidActionType in:
org.eclipse.wst.common.project.facet.core.internal.FacetedPr ojectFrameworkImpl

!ENTRY org.eclipse.osgi 2 1 2009-06-20 11:33:08.613
!MESSAGE NLS unused message: invalidEventHandlerType in:
org.eclipse.wst.common.project.facet.core.internal.FacetedPr ojectFrameworkImpl

!ENTRY org.eclipse.osgi 2 1 2009-06-20 11:33:08.613
!MESSAGE NLS unused message: invalidRequiresConstraint in:
org.eclipse.wst.common.project.facet.core.internal.FacetedPr ojectFrameworkImpl

!ENTRY org.eclipse.osgi 2 1 2009-06-20 11:33:08.613
!MESSAGE NLS unused message: invalidConflictsConstraint in:
org.eclipse.wst.common.project.facet.core.internal.FacetedPr ojectFrameworkImpl

!ENTRY org.eclipse.osgi 2 1 2009-06-20 11:33:08.613
!MESSAGE NLS unused message: deprecatedRuntimeChangedAction in:
org.eclipse.wst.common.project.facet.core.internal.FacetedPr ojectFrameworkImpl

!ENTRY org.eclipse.osgi 2 1 2009-06-20 11:33:08.613
!MESSAGE NLS unused message: tracingActionSorting in:
org.eclipse.wst.common.project.facet.core.internal.FacetedPr ojectFrameworkImpl

!ENTRY org.eclipse.osgi 2 1 2009-06-20 11:33:08.613
!MESSAGE NLS unused message: tracingFrameworkActivationStarting in:
org.eclipse.wst.common.project.facet.core.internal.FacetedPr ojectFrameworkImpl

!ENTRY org.eclipse.osgi 2 1 2009-06-20 11:33:08.613
!MESSAGE NLS unused message: tracingFrameworkActivationFinished in:
org.eclipse.wst.common.project.facet.core.internal.FacetedPr ojectFrameworkImpl

!ENTRY org.eclipse.osgi 2 1 2009-06-20 11:33:08.614
!MESSAGE NLS missing message: problemCaseNotRecognized in:
org.eclipse.wst.common.project.facet.core.internal.FacetedPr ojectFrameworkImpl

!ENTRY org.eclipse.osgi 2 1 2009-06-20 11:33:08.614
!MESSAGE NLS missing message: runtimeComponentTypeNotDefined in:
org.eclipse.wst.common.project.facet.core.internal.FacetedPr ojectFrameworkImpl

!ENTRY org.eclipse.wst.common.project.facet.core 4 0 2009-06-20
11:33:08.614
!MESSAGE Project facet jst.web has not been defined. It is used in plugin
org.eclipse.wst.jsdt.web.core.

!ENTRY org.eclipse.ui 4 4 2009-06-20 11:39:11.883
!MESSAGE Part already exists in page layout:
org.eclipse.debug.ui.PHPStackView.

Please let me know if I can provide any further information.

Cheers,

Antoine
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