At Wed, 12 Oct 2005 08:23:07 +0200, felix winkelmann wrote: > > The code for big_random looks ok, could this be related > to expt? (does the error also appear when expt is not involved?)
OK, this is just odd. $ csi -R numbers -eval '(print (bitwise-and (random 18446744073709551616) 18446744073709551616))' 0 $ csi -R numbers -eval '(print (bitwise-and (random 18446744073709551616) (- 18446744073709551616 1)))' 1418227916859036949 *** glibc detected *** double free or corruption (fasttop): 0x080a7a70 *** $ csi -R numbers -eval '(print (bitwise-and 18446744073709551616 (- 18446744073709551616 1)))' 0 *** glibc detected *** double free or corruption (fasttop): 0x080a7a70 *** The error doesn't occur until you quit. It's also related to bitwise-and and -, not random or expt. In general: (bitwise-and bignum (- bignum fixum)) causes the error, but (bitwise-and (- bignum fixum) bignum) (bitwise-and bignum (- bignum bignum)) do not. -- Alex > On 10/12/05, Alex Shinn <[EMAIL PROTECTED]> wrote: > > At Wed, 12 Oct 2005 07:35:36 +0200, felix winkelmann wrote: > > > > > > Hm... Works fine on this machine. I'll try it on another tonight. > > > > > > Can someone else reproduce this problem? > > > > I can: > > > > $ csi -R numbers -eval '(bitwise-and (random (expt 2 64)) (- (expt 2 64) > > 1))' > > *** glibc detected *** double free or corruption (fasttop): 0x080a7c08 *** > > Aborted > > > > $ csi -v|grep Version > > Version 2, Build 2 - linux-unix-gnu-x86 - [ dload ] > > > > $ uname -a > > Linux strelka 2.6.6 #5 SMP Wed Jun 30 18:38:16 JST 2004 i686 GNU/Linux > > > > GMP version 4.1.4-6. > > > > -- > > Alex > > > _______________________________________________ Chicken-users mailing list Chicken-users@nongnu.org http://lists.nongnu.org/mailman/listinfo/chicken-users
