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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Jay:<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Results on the following platforms are all identical:<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Windows 2000, Intel Pentium 3: 64 4<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Windows XP, Intel Core Duo T2400: 64 4<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Windows Vista, Intel Core2 Duo P9600: 64 4<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Regards,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Randy Coleburn<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal style='margin-left:.5in'><b><span style='font-size:10.0pt;
font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;
font-family:"Tahoma","sans-serif"'> jayk123@hotmail.com
[mailto:jayk123@hotmail.com] <b>On Behalf Of </b>Jay K<br>
<b>Sent:</b> Wednesday, January 06, 2010 8:18 AM<br>
<b>To:</b> m3devel<br>
<b>Subject:</b> Re: [M3devel] double double double double checking jmp_buf
size/alignment<o:p></o:p></span></p>
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<p class=MsoNormal style='margin-left:.5in'><o:p> </o:p></p>
<p class=MsoNormal style='mso-margin-top-alt:0in;margin-right:0in;margin-bottom:
12.0pt;margin-left:.5in'><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>Was
truncated!..edited slightly to avoid..<br>
<br>
<o:p></o:p></span></p>
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<p class=MsoNormal style='margin-left:.5in'><span style='font-size:10.0pt;
font-family:"Verdana","sans-serif"'>From: jay.krell@cornell.edu<br>
To: m3devel@elegosoft.com<br>
Subject: double double double double checking jmp_buf size/alignment<br>
Date: Wed, 6 Jan 2010 12:28:02 +0000<br>
<br>
Getting this right is very important.<br>
Well, we can overstate but it is wasteful.<br>
<br>
<br>
So anyone with any time, please compile/run this and send the
"platform" (uname -a) and the output, thanks.<br>
Or look at m3-libs/m3core/src/C/*/Csetjmp.i3 and<br>
m3-sys/m3middle/src/Target.m3 and see if all three agree.<br>
<br>
<br>
I have checked a bunch of systems myself but extra checking is good.<br>
<br>
<br>
If you have a system we do not yet or any longer support, those are ok too.<br>
(e.g. Alpha_*, ARM_*, MIPS_*, *_Irix, *_VMS, *_Tru64 etc.)<br>
<br>
<br>
#include <setjmp.h><br>
#include <stdio.h><br>
<br>
#ifdef __GNUC__<br>
#define ALIGN_OF(x) ((int)(sizeof(struct { char a; x b; }) - sizeof(x)))<br>
#else<br>
#define ALIGN_OF(x) ((int)__alignof(x))<br>
<br>
int main()<br>
{<br>
printf("%d %d\n", (int)sizeof(jmp_buf), ALIGN_OF(jmp_buf));<br>
return 0;<br>
}<br>
<br>
<br>
Thanks,<br>
- Jay<o:p></o:p></span></p>
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