Bug 572260
| Summary: | missing debuginfo for inline asm arg in c++ method | ||||||
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| Product: | [Fedora] Fedora | Reporter: | Stan Cox <scox> | ||||
| Component: | gcc | Assignee: | Jakub Jelinek <jakub> | ||||
| Status: | CLOSED ERRATA | QA Contact: | Fedora Extras Quality Assurance <extras-qa> | ||||
| Severity: | medium | Docs Contact: | |||||
| Priority: | low | ||||||
| Version: | rawhide | CC: | jakub, mjw | ||||
| Target Milestone: | --- | ||||||
| Target Release: | --- | ||||||
| Hardware: | All | ||||||
| OS: | Linux | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | gcc-4.4.3-12.fc13 | Doc Type: | Bug Fix | ||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2010-04-13 01:50:41 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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The trunk just makes slightly different inlining decisions. Compiling this on the trunk -g -O2 --param early-inlining-insns=32 leads to the same thing. While VTA and var-tracking correctly track it, when method is inlined in early inlining rather than normal inlining, it is decided to be a non-localized variable, therefore dwarf2out.c doesn't look it up, just its origin and thus eventhough dwarf2out_var_location recorded that it is constant and its value, gen_variable_die doesn't look it up at all. Will file upstream and discuss there with Honza. gcc-4.4.3-12.fc13 has been submitted as an update for Fedora 13. http://admin.fedoraproject.org/updates/gcc-4.4.3-12.fc13 gcc-4.4.3-12.fc13 has been pushed to the Fedora 13 testing repository. If problems still persist, please make note of it in this bug report. If you want to test the update, you can install it with su -c 'yum --enablerepo=updates-testing update gcc'. You can provide feedback for this update here: http://admin.fedoraproject.org/updates/gcc-4.4.3-12.fc13 gcc-4.4.3-12.fc13 has been pushed to the Fedora 13 stable repository. If problems still persist, please make note of it in this bug report. |
Created attachment 399133 [details] c++ testcase gcc 4.4.3-9 is unable to find debuginfo for arg3, which has been assigned the method argument 'min', in: void method (int min) {} (stap, by way of libdw, says) semantic error: failed to retrieve location attribute for local 'arg3' (dieoffset: 0x5be): identifier '$arg3' at /work/scox/virginsystemtap/src/testsuite/systemtap.base/cxxclass.stp:28:57 source: printf("meth %s: %d %d\n", user_string($arg1), $arg2, $arg3); ^ gcc built from the upstream svn trunk works okay: /work/scox/toolchain/install/bin/g++ -O2 -g cxxclass.ii -o cxxclass.exe stap cxxclass.stp cxxclass.exe -c ./cxxclass.exe main_enter ...