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<body class='hmmessage'>Assertions, like a lot of code, often succeed by luck.<BR>

There's little point in asserting a pointer isn't null right before dereferencing it. You are going to crash on one line or the next.<BR>

 <BR>

 - Jay<BR><BR>

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CC: m3devel@elegosoft.com From: hosking@cs.purdue.edu To: jayk123@hotmail.com Subject: Re: [M3devel] thread.fork getting nil on nt386gnu? Date: Fri, 7 Mar 2008 14:48:29 -0500 Umm.  If the assertion is wrong then how has this code ever run before...

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<DIV>On Mar 7, 2008, at 2:21 PM, Jay wrote:</DIV></SPAN></SPAN></SPAN></SPAN></SPAN></SPAN></SPAN></SPAN></DIV></SPAN></DIV>

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<BLOCKQUOTE><SPAN class=EC_Apple-style-span style="WORD-SPACING: 0px; FONT: 12px Helvetica; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BORDER-COLLAPSE: separate">

<DIV class=EC_hmmessage style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">assertions are also notoriously wrong.<BR>Two out of three thread implementations don't have it..<BR> <BR> - Jay<BR><BR>

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CC:<SPAN class=EC_Apple-converted-space> </SPAN><A href="mailto:m3devel@elegosoft.com">m3devel@elegosoft.com</A><BR>From:<SPAN class=EC_Apple-converted-space> </SPAN><A href="mailto:hosking@cs.purdue.edu">hosking@cs.purdue.edu</A><BR>To:<SPAN class=EC_Apple-converted-space> </SPAN><A href="mailto:jayk123@hotmail.com">jayk123@hotmail.com</A><BR>Subject: Re: [M3devel] thread.fork getting nil on nt386gnu?<BR>Date: Fri, 7 Mar 2008 08:41:23 -0500<BR><BR>

<DIV>It is always dangerous to remove assertions that have worked in the past.  Better to understand why they no longer work.  Anyway, what this suggests is something in alignment because what the assertion checks is that the method table for the Thread.Closure object passed to Thread.Fork contains a non-NIL function pointer in the "apply" slot.</DIV><BR>

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<DIV><FONT class=EC_EC_Apple-style-span face=GillSans-Light><SPAN class=EC_EC_Apple-style-span style="FONT-FAMILY: GillSans-Light">305 N. University Street | West Lafayette | IN 47907 | USA</SPAN></FONT></DIV>

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<DIV>

<DIV>On Mar 7, 2008, at 1:00 AM, Jay wrote:</DIV><BR class=EC_EC_Apple-interchange-newline>

<BLOCKQUOTE><SPAN class=EC_EC_Apple-style-span style="WORD-SPACING: 0px; FONT: 12px Helvetica; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BORDER-COLLAPSE: separate">

<DIV class=EC_EC_hmmessage style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">This asssertion is absent from the two other thread implementations, and is dependent on a loophole to underlying details that I didn't track down to determine if they are corrrect. So I merely removed this.<BR> <BR>Still can't connect to the X server for some reason..<BR> <BR> - Jay<BR>

<BLOCKQUOTE>

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CC:<SPAN class=EC_EC_Apple-converted-space> <A href="mailto:m3devel@elegosoft.com">m3devel@elegosoft.com</A> From:<SPAN class=EC_EC_Apple-converted-space> <A href="mailto:hosking@cs.purdue.edu">hosking@cs.purdue.edu</A> To:<SPAN class=EC_EC_Apple-converted-space> <A href="mailto:jayk123@hotmail.com">jayk123@hotmail.com</A> Subject: Re: [M3devel] thread.fork getting nil on nt386gnu? Date: Tue, 26 Feb 2008 13:29:28 -0500 Looks like a corrupted/uninitialized type (method table contains a NIL pointer...).

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<DIV>

<DIV>On Feb 25, 2008, at 1:15 PM, Jay wrote:</DIV><BR class=EC_EC_EC_Apple-interchange-newline>

<BLOCKQUOTE><SPAN class=EC_EC_EC_Apple-style-span style="WORD-SPACING: 0px; FONT: 12px Helvetica; TEXT-TRANSFORM: none; COLOR: rgb(0,0,0); TEXT-INDENT: 0px; WHITE-SPACE: normal; LETTER-SPACING: normal; BORDER-COLLAPSE: separate">

<DIV class=EC_EC_EC_hmmessage style="FONT-SIZE: 10pt; FONT-FAMILY: Tahoma">any obvious ideas? I'll have to pause for a bit again..<BR><BR><A href="mailto:Jay@jay-win1">Jay@jay-win1</A><SPAN class=EC_EC_EC_Apple-converted-space> </SPAN>/cygdrive/c/dev2/cm3.2/m3-ui/juno-2/juno-app/NT386GNU/Juno.exe<BR><BR>***<BR>*** runtime error:<BR>***    Thread client error: NIL apply method passed to Thread.Fork!<BR>***    file "ThreadWin32.m3", line 578<BR>***<BR>  14837 [sig] Juno 3908 c:\dev2\cm3.2\m3-ui\juno-2\juno-app\NT386GNU\Juno.exe: *<BR>** fatal error - called with threadlist_ix -1<BR>Hangup<BR> <BR> - Jay<BR><BR>

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