ADD: modulo test which fails for Mohamed on Mac OS X 10.6.8, with segfault:
Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_INVALID_ADDRESS at address: 0x00006f732e51646c
0x00000001001e25d8 in _omAlloc0 (size=240) at omInline.h:75
75 __omTypeAlloc0(void*, addr, size);
(gdb) bt
!#0 0x00000001001e25d8 in _omAlloc0 (size=240) at omInline.h:75
!#1 0x00000001001e26e4 in mpNew (r=5, c=6) at matpol.cc:62
!#2 0x00000001001e4be0 in mp_Copy (a=0x100d93120, r=0x100d7fce8) at matpol.cc:78
!#3 0x00000001000957f1 in s_internalCopy (t=274, d=0x100d93120) at subexpr.cc:382
!#4 0x0000000100096c73 in sleftv::Copy (this=0x100d190d8, source=0x7fff5fbf5300) at subexpr.cc:607
!#5 0x00000001000331de in yyparse () at grammar.y:1601
!#6 0x0000000100061287 in iiPStart (pn=0x100d8d228, v=0x100dbb368) at iplib.cc:350
!#7 0x0000000100061567 in iiMake_proc (pn=0x100d8d228, pack=0x0, sl=0x100dbb368) at iplib.cc:478
!#8 0x00000001000551f2 in jjPROC (res=0x7fff5fbfb2e0, u=0x100dbb2e8, v=0x100dbb368) at iparith.cc:1481
!#9 0x0000000100041062 in iiExprArith2 (res=0x7fff5fbfb2e0, a=0x7fff5fbf8780, op=40, b=0x100dbb268, proccall=0) at iparith.cc:7461
!#10 0x0000000100041674 in jjKLAMMER_PL (res=0x7fff5fbfb2e0, u=0x7fff5fbf8780) at iparith.cc:6806
!#11 0x000000010003ef1d in iiExprArithM (res=0x7fff5fbfb2e0, a=0x7fff5fbf8780, op=40) at iparith.cc:7983
!#12 0x000000010002f400 in yyparse () at grammar.y:523
!#13 0x0000000100061287 in iiPStart (pn=0x100d865a8, v=0x100da4468) at iplib.cc:350
!#14 0x0000000100061567 in iiMake_proc (pn=0x100d865a8, pack=0x0, sl=0x100da4468) at iplib.cc:478
!#15 0x00000001000551f2 in jjPROC (res=0x7fff5fbfe610, u=0x100da44e8,v=0x100da4468) at iparith.cc:1481
!#16 0x0000000100041062 in iiExprArith2 (res=0x7fff5fbfe610, a=0x7fff5fbfb928, op=40, b=0x100da43e8, proccall=0) at iparith.cc:7461
!#17 0x0000000100041674 in jjKLAMMER_PL (res=0x7fff5fbfe610, u=0x7fff5fbfb928) at iparith.cc:6806
!#18 0x000000010003ef1d in iiExprArithM (res=0x7fff5fbfe610, a=0x7fff5fbfb928, op=40) at iparith.cc:7983
!#19 0x000000010002f400 in yyparse () at grammar.y:523
!#20 0x000000010000b503 in main (argc=2, argv=0x7fff5fbfed20) at tesths.cc:254
