Bug 679815
| Summary: | type_units and DW_AT_GNU_odr_signature support | ||||||
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| Product: | [Fedora] Fedora | Reporter: | Mark Wielaard <mjw> | ||||
| Component: | elfutils | Assignee: | Roland McGrath <roland> | ||||
| Status: | CLOSED ERRATA | QA Contact: | Fedora Extras Quality Assurance <extras-qa> | ||||
| Severity: | unspecified | Docs Contact: | |||||
| Priority: | unspecified | ||||||
| Version: | rawhide | CC: | mjw, mjw, pmachata, roland | ||||
| Target Milestone: | --- | ||||||
| Target Release: | --- | ||||||
| Hardware: | Unspecified | ||||||
| OS: | Unspecified | ||||||
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| Fixed In Version: | elfutils-0.153-1.fc15 | Doc Type: | Bug Fix | ||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2012-03-02 01:18:56 UTC | Type: | --- | ||||
| Regression: | --- | Mount Type: | --- | ||||
| Documentation: | --- | CRM: | |||||
| Verified Versions: | Category: | --- | |||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||
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Description
Mark Wielaard
2011-02-23 15:06:21 UTC
I haven't found what DW_AT_GNU_odr_signature is actually used for. It doesn't appear to be a reference kind of thing in the DWARF sense. I've added eu-readelf support to print its name. For the dwarf branch, there is just known-dwarf.h regeneration (--enable-maintainer-mode) that should keep dwarf::attributes::name from missing it. There should not be anything else required there for handling it, it's just a 64-bit constant. dwarflint might need to add it. Thanks for this test case. It uncovered a couple bugs that are now fixed on the dwarf branch where it makes sense. I'll write to the list about the one place where it doesn't make sense. I think we can consider this fixed from dwarflint perspective, too. Just for reference, DW_AT_GNU_odr_signature isn't the same as DW_AT_signature. DW_AT_GNU_odr_signature is meant to be a helper for One Definition Rule (ODR) detection https://secure.wikimedia.org/wikipedia/en/wiki/One_Definition_Rule but no support for it has been written yet. See: http://gcc.gnu.org/ml/gcc/2011-04/msg00065.html DW_AT_signature of course is a new reference type for .debug_types. This can be closed when 0.153 is released. Commit 47c532 "Handle DW_AT_GNU_odr_signature in readelf." is all there is to do for now. elfutils-0.153-1.fc16 has been submitted as an update for Fedora 16. https://admin.fedoraproject.org/updates/elfutils-0.153-1.fc16 elfutils-0.153-1.fc17 has been submitted as an update for Fedora 17. https://admin.fedoraproject.org/updates/elfutils-0.153-1.fc17 Package elfutils-0.153-1.fc17: * should fix your issue, * was pushed to the Fedora 17 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing elfutils-0.153-1.fc17' as soon as you are able to. Please go to the following url: https://admin.fedoraproject.org/updates/FEDORA-2012-2344/elfutils-0.153-1.fc17 then log in and leave karma (feedback). elfutils-0.153-1.fc17 has been pushed to the Fedora 17 stable repository. If problems still persist, please make note of it in this bug report. elfutils-0.153-1.fc15 has been submitted as an update for Fedora 15. https://admin.fedoraproject.org/updates/elfutils-0.153-1.fc15 elfutils-0.153-1.fc16 has been pushed to the Fedora 16 stable repository. If problems still persist, please make note of it in this bug report. elfutils-0.153-1.fc15 has been pushed to the Fedora 15 stable repository. If problems still persist, please make note of it in this bug report. elfutils-0.153-1.fc15 has been pushed to the Fedora 15 stable repository. If problems still persist, please make note of it in this bug report. |