[GAP Forum] Bug Report

[Nilo de Roock]

Hello GAP Forum,

Below you'll find
- GAP output
- listing of the GAP program I was running
- contents of stackdumpfile

I hope this helps.

Kind regards,
nilo

<GAP output>
I got the following output...
gap> str(testH(3));
"(C12 x C2) : C2"
gap> str(testH(9));
"(C36 x C2) : C2"
gap> str(testH(27));
      4 [main] gapw95 101740 handle_exceptions: Exception: STATUS_ACCESS_VIOLATI
ON
  18102 [main] gapw95 101740 open_stackdumpfile: Dumping stack trace to gapw95.e
xe.stackdump
</GAP OUTPUT>

<GAP PROGRAM>
testH:=function(p)
	local M, M1, T;

# QD16 (8)
# 	M1:=[	[[ 1, 0, 0 ],  [0, 0, E(8)^-1 ], [0, E(8), 0 ] ],
#		[[ 1, 0, 0 ],  [0, E(4), 0 ], [0, 0, -E(4) ] ],
#		[[ 1, 0, 0 ],  [0, 0, -1 ], [0, 1, 0 ] ],
#		[[ 1, 0, 0 ],  [0, 1, 0 ], [0, 0, 1 ] ]	];
 	M1:=[	[[ 1, 0, 0, 0 ],  [0, 0, E(p)^-1, 0 ], [0, E(p), 0, 0 ], [0,
0, 0, 1 ] ],
		[[ 1, 0, 0, 0 ],  [0, E(4), 0, 0 ], [0, 0, -E(4), 0 ], [0, 0, 0, 1 ]  ],
		[[ 1, 0, 0, 0 ],  [0, 0, -1, 0 ], [0, 1, 0, 0 ], [0, 0, 0, 1 ]  ],
		[[ 1, 0, 0, 0 ],  [0, 1, 0, 0 ], [0, 0, 1, 0 ], [0, 0, 0, 1 ]  ]];

	return (SmallGroup(IdGroup(Group(M1))));
end;
</GAP PROGRAM>

<STACKDUMPFILE>
Exception: STATUS_ACCESS_VIOLATION at eip=00483218
eax=00000001 ebx=0AAE6098 ecx=00000000 edx=0A4A8FF8 esi=10F71F04 edi=0EA3D19C
ebp=0022DE48 esp=0022DE00 program=C:\GAP4R4\bin\gapw95.exe, pid
101740, thread main
cs=001B ds=0023 es=0023 fs=003B gs=0000 ss=0023
Stack trace:
Frame     Function  Args
0022DE48  00483218  (00000010, 00000000, 00000001, 0DA3434F)
0022DE68  00482B14  (00000002, 00000010, 0E990EBC, 00000000)
0022DEA8  00487552  (368D0D3D, 0A9AED74, 00000002, 0A9AECEC)
0022DED8  004D88B0  (0A66CE54, 0A9ADF38, 0022DF18, 0A070A4C)
0022DF08  0049F6E0  (0A06D150, 0AC644D4, 0A658648, 0A9ADF38)
0022DF98  004BCCC3  (0A093200, 0AC644D4, 0A658648, 0A9ADF38)
0022DFD8  004778AB  (000004CC, 0A52A354, 00000504, 000005EC)
0022DFF8  004EDE54  (0000053C, 0B80DA28, 0022E028, 004ECA66)
0022E008  004EC714  (000005EC, 0AAE8D90, 0022E048, 0B80DA28)
0022E028  004ECA66  (00000600, 00000638, 0022E048, 004A4100)
0022E048  004EC9E6  (00000614, 0AAD14A4, 0022E088, 000003B8)
0022E068  004EC9E6  (00000620, 00000005, 0022E098, 00000007)
0022E098  004ED698  (0000062C, 00000714, 0022E0C8, 00000240)
0022E0B8  004EC5D5  (0000063C, 00000009, 0022E0D8, 00000005)
0022E0D8  004EDBC9  (00000664, 0A529E7C, 0022E0F8, 00000004)
0022E0F8  004EC5D5  (00000718, 0000016C, 0022E128, 0047975D)
End of stack trace (more stack frames may be present)
</STACKDUMPFILE>