Bug 1732960 - cmp -b shows incorrect data
Summary: cmp -b shows incorrect data
Alias: None
Product: Red Hat Enterprise Linux 8
Classification: Red Hat
Component: diffutils
Version: 8.0
Hardware: All
OS: Unspecified
Target Milestone: rc
: 8.0
Assignee: Than Ngo
QA Contact: Jakub Haruda
Depends On:
Blocks: 1746915
TreeView+ depends on / blocked
Reported: 2019-07-24 20:36 UTC by Pablo Greco
Modified: 2020-04-28 16:55 UTC (History)
4 users (show)

Fixed In Version: diffutils-3.6-6.el8
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Last Closed: 2020-04-28 16:55:19 UTC
Type: Bug
Target Upstream Version:

Attachments (Terms of Use)

System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2020:1853 0 None None None 2020-04-28 16:55:22 UTC

Description Pablo Greco 2019-07-24 20:36:05 UTC
Description of problem:
cmp -b (print bytes) shows incorrect output

Version-Release number of selected component (if applicable):

How reproducible:

Steps to Reproduce:
1.echo 'This is some text to play with' >/var/tmp/a
2.echo 'This is some test to play with' >/var/tmp/b
3.cmp -b /var/tmp/a /var/tmp/b

Actual results:
/var/tmp/a /var/tmp/b differ: byte 16, line 1 is  12 ^J 163 s

Expected results:
/var/tmp/a /var/tmp/b differ: byte 16, line 1 is 170 x 163 s

Additional info:

Local rebuild applying this patch from upstream fixes the problem

Comment 1 Than Ngo 2019-07-25 07:59:07 UTC
I can reproduce the issue with the attached testcase. Pablo, thank for your report.

Comment 5 Than Ngo 2019-11-19 14:17:43 UTC
it's fixed in diffutils-3.6-6.el8

Comment 9 errata-xmlrpc 2020-04-28 16:55:19 UTC
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.


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