Bug 116823

Summary: bison crashes with missing ending semicolon
Product: Red Hat Enterprise Linux 3 Reporter: Göran Uddeborg <goeran>
Component: bisonAssignee: Roland McGrath <roland>
Status: CLOSED ERRATA QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: 3.0   
Target Milestone: ---   
Target Release: ---   
Hardware: x86_64   
OS: Linux   
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Fixed In Version: Doc Type: Bug Fix
Doc Text:
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Clone Of: Environment:
Last Closed: 2004-09-02 02:33:19 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 127101    
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Description Göran Uddeborg 2004-02-25 15:43:03 UTC 
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4) Gecko/20030922

Description of problem:
Running bison on this three line input file

   %%
   some_identifier:
   %%

results in a segmentation violation.

Version-Release number of selected component (if applicable):
bison-1.875-4

How reproducible:
Always

Steps to Reproduce:
1.bison ah.y    

Actual Results:  bash-2.05b$ bison ah.y
Segmentation fault

Expected Results:  A correct (if pretty uninteresting) ah.c parser.

Additional info:

This does not happen on i386.  It happens on x86_64.

I'm aware omitting the final semicolon from rules is considered
obsolecent.  For a while bison warned about it, but that seems to be
gone again.  In any case, it should not crash.
Comment 1 Roland McGrath 2004-06-25 08:48:31 UTC 
This is fixed by upgrading to version 1.875c, which will be in the
next erratum.
Comment 2 Jay Turner 2004-09-02 02:33:19 UTC 
An errata has been issued which should help the problem 
described in this bug report. This report is therefore being 
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files, 
please follow the link below. You may reopen this bug report 
if the solution does not work for you.

http://rhn.redhat.com/errata/RHEA-2004-267.html