On Sun, Jun 02, 2019 at 12:39:25PM +0200, Kristian Lein-Mathisen wrote: > Hi guys, > > I've come across a strange problem with simple-sha1. Sometimes it reports > the wrong hash for large files when I use the sha1sum procedure. I don't > know if the problem is there for strings. > > 1216 klm@kth ~/archive ➤ csi -R simple-sha1 -p '(sha1sum "MOV_0384.mp4")' > ; sha1sum "MOV_0384.mp4" > cb491b2f692dc3e9269a633f54eceb85269b0442 > 3b673158654ddc9bb668b5eafc050c8be66ad968 > ./xz2/dcim/phone/100ANDRO/MOV_0384.mp4 > > >From not-very-rigorous testing, it seems it happens on all files that are > bigger than the 512M mark:
This just screams "overflow"; (integer-length (* 512 1024 1024) => 30 Are you using CHICKEN 4 or CHICKEN 5? Even CHICKEN 4 should deal with this correctly by overflowing into a flonum. That would be a bug in the egg, then. Perhaps the fix is changing: (define update (foreign-lambda void "SHA1Update" c-pointer c-pointer int)) into: (define update (foreign-lambda void "SHA1Update" c-pointer c-pointer integer)) Can you try? Cheers, Peter
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