Crash when attempting to invert non-invertible matrix

["Lorenz Minder" <lminder@gmx.net>]

Hi,

With the latest SVN snapshots I get a crash when trying to invert a matrix that is not invertible.  (Matrix is mod p).  This aborts without a crash in 2.4.2.

Best,
--Lorenz

Excerpt:


                 GP/PARI CALCULATOR Version 2.4.3 (development)
          PowerPC running linux (PPC/GMP-4.2.2 kernel) 32-bit version
               compiled: Apr 26 2009, gcc-4.3.2 (Debian 4.3.2-1) 
                 (readline v5.2 enabled, extended help enabled)

                     Copyright (C) 2000-2008 The PARI Group

PARI/GP is free software, covered by the GNU General Public License, and comes 
WITHOUT ANY WARRANTY WHATSOEVER.

Type ? for help, \q to quit.
Type ?12 for how to get moral (and possibly technical) support.

parisize = 4000000, primelimit = 500509
? 1/[Mod(0, 2), Mod(0, 2); Mod(0, 2), Mod(0,2)]
  ***   at top-level: 1/[Mod(0,2),Mod(0,2);
  ***                  ^--------------------
  *** _/_: bug in PARI/GP (Segmentation Fault), please report
  ***   Break loop: type <Return> three times, or Control-d, to go back to GP)

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