I'm always impressed when someone finds a "bug" in robustly checked software, even though I can't imagine why someone would legitimately need a recursive list. :)
This immediately kills gap in Cygwin (no mention of a segfault). I duplicated the segfault on my Linux machine. I know a few functions have "Recursion Depth Traps". That's probably the solution here. Joe On Tue, Apr 13, 2010 at 11:11 PM, Justin Walker <justin.wal...@comcast.net>wrote: > Dear Forum, > > I was fiddling with lists and tried the following, which resulted in a > segmentation fault: > > gap> l:=ListWithIdenticalEntries(6,[1,2,3]);; > gap> l[1][1]:=l[3];; > gap> l; > [ [ ~[1], 2, 3 ], [ ~[2], 2, 3 ], [ ~[3], 2, 3 ], [ ~[4], 2, 3 ], [ ~[5], > 2, 3 ], > [ ~[6], 2, 3 ] ] > gap> MakeImmutable(l); > > Boom! > > I gather that the result of the second assignment is to tie the list into > knots. The following call then goes recursive and eventually blows the > stack (true?). > > I thought it worth reporting, in case it's fixable. > > Regards, > > Justin > > -- > Justin C. Walker, Curmudgeon-At-Large > Institute for the Absorption of Federal Funds > -------- > If you're not confused, > You're not paying attention > -------- > > > > > _______________________________________________ > Forum mailing list > Forum@mail.gap-system.org > http://mail.gap-system.org/mailman/listinfo/forum > _______________________________________________ Forum mailing list Forum@mail.gap-system.org http://mail.gap-system.org/mailman/listinfo/forum
