Bug 420791

Summary: Probable gcc bug on 64-bit - diff -b or -t report differences on line with spaces
Product: [Fedora] Fedora Reporter: Jim Thomas <thomas>
Component: diffutilsAssignee: Tim Waugh <twaugh>
Status: CLOSED DUPLICATE QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: low Docs Contact:
Priority: low    
Version: 8   
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
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Fixed In Version: Doc Type: Bug Fix
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Last Closed: 2007-12-13 10:28:48 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description Flags
log file showing tests on "lapuwale" the 64-bit system and "aa" a 32-bit system none

Description Jim Thomas 2007-12-12 00:38:49 UTC 
Description of problem:
diff -b and diff -w report differences on lines with only blanks on 64-bit processor

Version-Release number of selected component (if applicable):
diff 2.8.1
gcc (GCC) 4.1.2 20070925 (Red Hat 4.1.2-33)

How reproducible:
100%

Steps to Reproduce:
1. echo "     " > blanks
2. echo "" > empty
3. diff -b
4. diff -w
  
Actual results:
differences

Expected results:
no differences

Additional info:
Presumably a bug in gcc, actually :)
I recompiled diffutils 2.8.1 with the above gcc and that is better, but it still
shows differences for diff -t
NOTE - this is 2.6.23.1-42.fc8 on a 64-bit Q6700
see attachment
Comment 1 Jim Thomas 2007-12-12 00:38:49 UTC 
Created attachment 284841 [details]
log file showing tests on "lapuwale" the 64-bit system and "aa" a 32-bit system
Comment 2 Tim Waugh 2007-12-12 12:47:11 UTC 
This sounds suspiciously like bug #363831 which was fixed in an update.  Please
show me the output of 'rpm -q diffutils' so that I can rule that out.
Comment 3 Jim Thomas 2007-12-12 17:54:24 UTC 
We were running diffutils-2.8.1-17.fc8 .  yuming diffutils-2.8.1-19.fc8 made it
work.  Thank you! Jim
Comment 4 Tim Waugh 2007-12-13 10:28:48 UTC 

*** This bug has been marked as a duplicate of 363831 ***