See below. The bug happens after commit 35a90592501ebde7e7ddbf2486ca9d315e317d09, ‘Add unboxed floating point comparison instructions.’
> ./meta/guile GNU Guile 2.1.6 Copyright (C) 1995-2016 Free Software Foundation, Inc. Guile comes with ABSOLUTELY NO WARRANTY; for details type `,show w'. This program is free software, and you are welcome to redistribute it under certain conditions; type `,show c' for details. Enter `,help' for help. scheme@(guile-user)> (define x 0.0) scheme@(guile-user)> (< x 1.0) $1 = #t scheme@(guile-user)> (< x 0.9) $2 = #f
