On Tue, 24 Feb 2015 23:13:48 +0100, Jens Axel Søgaard <jensa...@soegaard.net> wrote:
>2015-02-24 23:01 GMT+01:00 Eric Dong <yd2d...@uwaterloo.ca>: >> It seems that bit-vectors have a really weird bug, where short bit-vectors >> that aren't equal will often return true when tested with equal?. >> >> Here's a trivial example: http://pasterack.org/pastes/35137 >> >> Is this a known bug? It shouldn't be hard to fix; the equality tester just >> needs to, umm, do its thing properly? The bug is very annoying and caused a >> lot of headache in a certain application of mine, since the false equality >> does things like breaking hashtables unexpectedly, etc. >> >Hi Eric, > >I vaguely remember this bug being fixed some time ago, >and since I get #f on here on version 6.1.1.8 I suspect >you can fix the problem by upgrading. > >Which version of Racket do you use? > >/Jens Axel It's still in the 6.1.1 release. I played with it a little: if the two bit-vectors have equal length and the length is <= 8, then equal? always returns #t ... the values of the elements seem to be ignored. George ____________________ Racket Users list: http://lists.racket-lang.org/users
