#11226: Sympow spkg fails with gcc 4.6.0
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Reporter: jdemeyer | Owner: tbd
Type: defect | Status: new
Priority: major | Milestone: sage-4.7.1
Component: packages | Keywords: sympow
Work_issues: | Upstream: N/A
Reviewer: | Author:
Merged: | Dependencies:
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Comment(by drkirkby):
Replying to [comment:8 mariah]:
> If src/QD.c is compiled with -O1 (and the rest with -O3) then
> {{{sage -t -long -force_lib devel/sage/sage/lfunctions/sympow.py}}}
> no longer fails.
>
> I am working on isolating the code in QD.c that demonstrates the
gcc-4.6.0 optimization bug.
You are a brave lady Mariah - any code in SYMPOW is difficult to
understand. Bill Hart described it as "virtually obfuscated".
Unfortunately, since it not actually standard C (the Sun compiler wont
compile it), it can't be entered into The International Obfuscated C Code
Contest
http://www.ioccc.org/
I particualry like SYMPOW's Configure script
http://boxen.math.washington.edu/home/kirkby/bad-
code/sympow-1.018.1.p7/src/Configure
which starts off
{{{
#!/bin/sh
}}}
then later has a test to see if sh exists on the system!
{{{
SH=`whichexe sh` && echo "#define SH \"$SH\"" >> $CONFIG
if [ -z "$SH" ]; then
echo "**ERROR**: Could not find sh"; exit 1;
else
echo "SH = $SH"
fi
}}}
Good luck Mariah - I don't envy you.
Dave
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11226#comment:9>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
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