Date: Wed, 30 Jan 2019 13:41:59 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 235320] usr.bin/units: What does this error message really mean: units: memory overflow in unit reduction Message-ID: <bug-235320-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=235320 Bug ID: 235320 Summary: usr.bin/units: What does this error message really mean: units: memory overflow in unit reduction Product: Base System Version: 11.2-RELEASE Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: bin Assignee: bugs@FreeBSD.org Reporter: 0mp@FreeBSD.org I use the following one-liner to test: > sh -c 'units "$(yes m | head -n "$1")" "$(yes cm | head -n "$1")"' sh $N When N is at most 154 then units(1) handles the conversion as expected. For example, for N=154: > * 1e+308 > / 1e-308 For N from 155 to 333 the output is as follows: > * inf > / 0 While for N from 334 to 500 the output seems a little bit broken. Here is the output of N=500: > units: memory overflow in unit reduction > conformability error > 1 m^334 > 0 centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi m centi cm m^166 For N >= 501 the output is: > units: memory overflow in unit reduction > units: memory overflow in unit reduction > units: memory overflow in unit reduction > conformability error > 1 m^500 > 1 centi cm^499 I'd like to document this behavior but I am not sure what really is expected to happen in those edge cases. -- You are receiving this mail because: You are the assignee for the bug.help
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