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<TITLE> [Mono-bugs] [Bug 474718] New: correct program that never ends, but it does if you add a WriteLine in a specific place
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<H1>[Mono-bugs] [Bug 474718] New: correct program that never ends, but it does if you add a WriteLine in a specific place</H1>
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<B>bugzilla_noreply at novell.com</B>
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<A HREF="mailto:mono-bugs%40lists.ximian.com?Subject=%5BMono-bugs%5D%20%5BBug%20474718%5D%20New%3A%20correct%20program%20that%20never%20ends%2C%0A%20but%20it%20does%20if%20you%20add%20a%20WriteLine%20in%20a%20specific%20place&In-Reply-To="
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TITLE="[Mono-bugs] [Bug 474718] New: correct program that never ends, but it does if you add a WriteLine in a specific place">bugzilla_noreply at novell.com
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</A><BR>
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<I>Wed Feb 11 06:40:17 EST 2009</I>
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<PRE><A HREF="https://bugzilla.novell.com/show_bug.cgi?id=474718">https://bugzilla.novell.com/show_bug.cgi?id=474718</A>
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Summary: correct program that never ends, but it does if you
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add a WriteLine in a specific place
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Classification: Mono
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Product: Mono: Runtime
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Version: 2.2.x
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Platform: x86
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OS/Version: Linux
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Status: NEW
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Severity: Normal
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Priority: P5 - None
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Component: JIT
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AssignedTo: <A HREF="http://lists.ximian.com/mailman/listinfo/mono-bugs">lupus at novell.com</A>
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ReportedBy: <A HREF="http://lists.ximian.com/mailman/listinfo/mono-bugs">anto.cuni at gmail.com</A>
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QAContact: <A HREF="http://lists.ximian.com/mailman/listinfo/mono-bugs">mono-bugs at lists.ximian.com</A>
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Found By: ---
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Created an attachment (id=271831)
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--> (<A HREF="https://bugzilla.novell.com/attachment.cgi?id=271831">https://bugzilla.novell.com/attachment.cgi?id=271831</A>)
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IL code reproducing the bug
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User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.1.11)
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Gecko/20080111 Firefox/2.0.0.11
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The attached IL program never ends. It seems that the JIT produce an infinite
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loop, even if the program itself does not contain any loop.
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Howover, if you uncomment the ldstr/WriteLine at lines 50-51, the JIT produces
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the right code and everything works as expected.
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Reproducible: Always
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Steps to Reproduce:
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1.ilasm2 bug.il
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2.mono bug.exe
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3.ctrl-C to stop it :-)
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Actual Results:
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the program doesn't end
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Expected Results:
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the program should print 0
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This is the broken mono version I got:
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$ mono -V
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Mono JIT compiler version 2.2 (tarball Thu Feb 5 11:12:49 CET 2009)
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Copyright (C) 2002-2008 Novell, Inc and Contributors. www.mono-project.com
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TLS: __thread
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GC: Included Boehm (with typed GC)
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SIGSEGV: altstack
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Notifications: epoll
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Architecture: x86
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Disabled: none
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Tried on another machine, mono 1.2.2.1 works correctly.
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--
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Configure bugmail: <A HREF="https://bugzilla.novell.com/userprefs.cgi?tab=email">https://bugzilla.novell.com/userprefs.cgi?tab=email</A>
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------- You are receiving this mail because: -------
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You are the QA contact for the bug.
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</PRE>
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