Bug 472384
| Summary: | Thread-safety bug in Boost.Regex-1.33.x | ||||||||||
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| Product: | Red Hat Enterprise Linux 5 | Reporter: | Filipe Brandenburger <filbranden> | ||||||||
| Component: | boost | Assignee: | Petr Machata <pmachata> | ||||||||
| Status: | CLOSED ERRATA | QA Contact: | BaseOS QE <qe-baseos-auto> | ||||||||
| Severity: | urgent | Docs Contact: | |||||||||
| Priority: | urgent | ||||||||||
| Version: | 5.7 | CC: | mnewsome, patrickm, pcfe, pmachata, pmuller, rdassen | ||||||||
| Target Milestone: | rc | Keywords: | Patch, ZStream | ||||||||
| Target Release: | --- | ||||||||||
| Hardware: | All | ||||||||||
| OS: | Linux | ||||||||||
| Whiteboard: | |||||||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||||||
| Doc Text: |
Prior to this update, when several regular expression objects were created simultaneously, such as in a multi-threaded program, the construction of one of them sometimes failed. With this update, the object variables have been moved from the shared memory to the stack, thereby making the constructing function thread safe.
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Story Points: | --- | ||||||||
| Clone Of: | Environment: | ||||||||||
| Last Closed: | 2012-02-21 03:15:54 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: | |||||||||||
| Bug Depends On: | |||||||||||
| Bug Blocks: | 494834, 668957, 727895 | ||||||||||
| Attachments: |
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Description
Filipe Brandenburger
2008-11-20 16:23:30 UTC
Created attachment 516143 [details] Test case Compile the test case and run it like this: > ./a.out # this for single-threaded run. This should never fail > ./a.out a # this for multi-threaded run. This fails before the fix: terminate called recursively terminate called after throwing an instance of 'boost::regex_error' what(): Invalid content of repeat range The actual bug can be different: > ./a.out a terminate called after throwing an instance of 'boost::regex_errorterminate called recursively ' what(): Invalid content of repeat range This goes away after the fix.
Technical note added. If any revisions are required, please edit the "Technical Notes" field
accordingly. All revisions will be proofread by the Engineering Content Services team.
New Contents:
Prior to this update, when several regular expression objects were created simultaneously, such as in a multi-threaded program, the construction of one of them sometimes failed. With this update, the object variables have been moved from the shared memory to the stack, thereby making the constructing function thread safe.
Created attachment 517410 [details]
Test case
... hopefully the right file this time around.
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. http://rhn.redhat.com/errata/RHSA-2012-0305.html |