giving std(0) to division causes segmentation fault

[ryutaroh@…]

When I run the following script

ring r=(16,a),(e2,e1,y(2..1)),(wp(1+30,1,1,1));
qring rq=std(ideal(e1^2, e2^2, e1*e2));
division(e2, std(0));

I get

   ? 2nd module does not lie in the first
Singular : signal 11 (v: 3130/ 14127M ):
current line:>>division(e2, std(0));<<
Segment fault/Bus error occurred at 7f300a64e000 because of 10206 (r:1319190656)
please inform the authors
trying to restart...
.

The full output follows. It is interesting to observe that we have "Segmentation fault" after Singular saying "Auf Wiedersehen".

$ Singular -v
Singular for x86_64-Linux version 3-1-3 (3130- 14127M )  Apr  8 2011 19:55:17
with
	factory(@(#) factoryVersion = 3.1.2),libfac(3.1.3,March 2011),
	GMP(4.3),NTL(5.5.2),64bit,unknown fgets method,Plural,DBM,
	dynamic modules,dynamic p_Procs,OM_CHECK=0,OM_TRACK=0,random=1319190656
	CC= gcc -march=k8 -O3 -w -fomit-frame-pointer -pipe -DNDEBUG -DOM_NDEBUG -Dx86_64_Linux -DHAVE_CONFIG_H,
	CXX= g++ -march=k8 -O3 -w -fomit-frame-pointer --no-rtti -I.. -I/tmp/hannes -pipe -DNDEBUG -DOM_NDEBUG -Dx86_64_Linux -DHAVE_CONFIG_H (4.4.5)
argv[0]   :	/usr/lib/Singular/Singular
SearchPath:	/usr/lib/Singular/MOD:/usr/share/Singular/LIB
Singular  :	/usr/bin/Singular
BinDir    :	/usr/lib/Singular
RootDir   :	/usr/share/Singular
DefaultDir:	
InfoFile  :	/usr/share/doc/Singular/info/singular.hlp
IdxFile   :	/usr/share/doc/Singular/doc/singular.idx
HtmlDir   :	/usr/share/doc/Singular/html
ManualUrl :	www.singular.uni-kl.de/Manual/3-1-3
ExDir     :	/usr/share/doc/Singular/examples
Path      :	/usr/lib/Singular:/usr/bin:/usr/local/bin:/bin:/usr/local/games:/usr/games
EmacsDir  :	/usr/share/Singular/emacs
Available HelpBrowsers: firefox, xinfo, info, builtin, dummy, emacs, 
Current HelpBrowser: firefox 
                     SINGULAR                                 /
 A Computer Algebra System for Polynomial Computations       /   version 3-1-3
                                                           0<
 by: W. Decker, G.-M. Greuel, G. Pfister, H. Schoenemann     \   March 2011
FB Mathematik der Universitaet, D-67653 Kaiserslautern        \
> <"singular-bug-111021-5.txt";
   ? 2nd module does not lie in the first
Singular : signal 11 (v: 3130/ 14127M ):
current line:>>division(e2, std(0));<<
Segment fault/Bus error occurred at 7f300a64e000 because of 10206 (r:1319190656)
please inform the authors
trying to restart...
. quit;
Auf Wiedersehen.
Segmentation fault

[hannes]

fixed with rev. 14421, (test rev. 14422)

After the error message, a clean up of undefined memory areas lead to a total memory corruption.