Bug 97526
| Summary: | bad fgrep matching 2.5 | ||||||||
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| Product: | [Retired] Red Hat Linux | Reporter: | Oscar Fernandez Cantero <ofcantero> | ||||||
| Component: | grep | Assignee: | Tim Waugh <twaugh> | ||||||
| Status: | CLOSED RAWHIDE | QA Contact: | Mike McLean <mikem> | ||||||
| Severity: | medium | Docs Contact: | |||||||
| Priority: | medium | ||||||||
| Version: | 9 | CC: | mitr, ofcantero | ||||||
| Target Milestone: | --- | ||||||||
| Target Release: | --- | ||||||||
| Hardware: | i386 | ||||||||
| OS: | Linux | ||||||||
| Whiteboard: | |||||||||
| Fixed In Version: | 2.5.1-26 | Doc Type: | Bug Fix | ||||||
| Doc Text: | Story Points: | --- | |||||||
| Clone Of: | Environment: | ||||||||
| Last Closed: | 2004-02-26 14:34:48 UTC | Type: | --- | ||||||
| Regression: | --- | Mount Type: | --- | ||||||
| Documentation: | --- | CRM: | |||||||
| Verified Versions: | Category: | --- | |||||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||||
| Embargoed: | |||||||||
| Attachments: |
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Please supply a test case. Created attachment 92441 [details]
small file
Created attachment 92442 [details]
gzipped big file fileB for testing
Here you have the files to do the test, as attachments of the bug. Regards Oscar I think this is now fixed in grep-2.5.1-26. |
From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.0.2) Gecko/20021120 Netscape/7.01 Description of problem: Definitely fgrep 2.5.x fails finding matches between two lists of strings. To see it try "fgrep -wf fileA fileB" where fileA and fileB are two ascii files with strings to match, one per line, and fileA is a subset of fileB (all the strings of fileA are contained in fileB). In the general case, fgrep is unable to match all the entries in fileA to the corresponding strings in fileB, it just do it for the most of them, but not all, in such a way that when running "fgrep -wf fileA fileB | wc -l" you won't obtain the number of real coincidences, but less. If you invert the order of files "fgrep -wf fileB fileA | wc -l" in this case it matches correctly all the common strings, and you obtain as a result of the above command a number which is equal to the number of lines of the fileA (as it have to be). Remember fileB is the greater one. If necessary I could provide with two files prepared for the test. Version-Release number of selected component (if applicable): grep-2.5.x How reproducible: Always Steps to Reproduce: 1. Explained in detail at the Description 2. 3. Additional info: I can realize the fail only happens in version 2.5.x of grep. Not in 2.4.x. So it affects redhat 7.3 and the following