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https://issues.apache.org/jira/browse/HTTPCLIENT-1681?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14720599#comment-14720599
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Gary Gregory commented on HTTPCLIENT-1681:
------------------------------------------
The first thing I would do is remove the {{finalize()}} method, that's probably
a code smell (but I am not an SME here).
> GPF occurs when WindowsNegotiateScheme.dispose() is called by garbage
> collector
> -------------------------------------------------------------------------------
>
> Key: HTTPCLIENT-1681
> URL: https://issues.apache.org/jira/browse/HTTPCLIENT-1681
> Project: HttpComponents HttpClient
> Issue Type: Bug
> Components: HttpClient
> Affects Versions: 4.5
> Environment: Windows 7
> Reporter: Alexander Bernstein
>
> I am using WindowsNegotiateScheme (created by WindowsNegotiateSchemeFactory)
> to have my client authenticate using SPNEGO.
> During the auth dance, several instances of WindowsNegotiateScheme are
> created. At a later time (arbitrary) these objects are finalized by GC, which
> causes a GPF and a crash.
> 1XMCURTHDINFO Current thread
> NULL ----------------------
> 3XMTHREADINFO "Finalizer thread" J9VMThread:0x0000000003FD1B00,
> j9thread_t:0x00000000050C1F10, java/lang/Thread:0x000007FFDE5E2800, state:R,
> prio=5
> 3XMJAVALTHREAD (java/lang/Thread getId:0x15, isDaemon:true)
> 3XMTHREADINFO1 (native thread ID:0xCBC, native priority:0x5,
> native policy:UNKNOWN, vmstate:R, vm thread flags:0x00000000)
> 3XMTHREADINFO3 Java callstack:
> 4XESTACKTRACE at com/sun/jna/Native.setPointer(Native Method)
> 4XESTACKTRACE at
> com/sun/jna/Pointer.setPointer(Pointer.java:1195)
> 4XESTACKTRACE at com/sun/jna/Memory.setPointer(Memory.java:658)
> 4XESTACKTRACE at com/sun/jna/Pointer.setValue(Pointer.java:937)
> 4XESTACKTRACE at
> com/sun/jna/Structure.writeField(Structure.java:800)
> 4XESTACKTRACE at
> com/sun/jna/Structure.write(Structure.java:718(Compiled Code))
> 4XESTACKTRACE at
> com/sun/jna/Structure.autoWrite(Structure.java:1923(Compiled Code))
> 4XESTACKTRACE at
> com/sun/jna/Function.convertArgument(Function.java:505(Compiled Code))
> 4XESTACKTRACE at
> com/sun/jna/Function.invoke(Function.java:297(Compiled Code))
> 4XESTACKTRACE at
> com/sun/jna/Library$Handler.invoke(Library.java:212)
> 4XESTACKTRACE at
> com/sun/proxy/$Proxy13.FreeCredentialsHandle(Bytecode PC:18)
> 4XESTACKTRACE at
> org/apache/http/impl/auth/win/WindowsNegotiateScheme.dispose(WindowsNegotiateScheme.java:99)
> 4XESTACKTRACE at
> org/apache/http/impl/auth/win/WindowsNegotiateScheme.finalize(WindowsNegotiateScheme.java:117)
> 4XESTACKTRACE at
> java/lang/J9VMInternals.runFinalize(J9VMInternals.java:436)
> 3XMTHREADINFO3 No native callstack available on this platform
> NULL
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