| Summary: | --gc-sections doesn't work on note sections | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | H.J. Lu <hongjiu.lu> |
| Component: | binutils | Assignee: | Nick Clifton <nickc> |
| Status: | CLOSED RAWHIDE | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | unspecified | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | 15 | CC: | dsmith, fche, jakub, jistone, mjw, nickc, scox, wcohen |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2011-06-10 08:52:32 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
In the upstream tracker, H.J. Lu determined that this is really an issue in ld, and committed a fix as well. I have added H.J.'s patch to the latest binutils release in rawhide: binutils-2.21.52.0.1-2.fc16. cf: http://sourceware.org/ml/binutils/2011-06/msg00107.html I released the Linux binutils 2.21.52.0.2, which contains the fix and Intel AVX2 support. |
When compiling GCC 4.7 on Fedora 15 with systemtap-sdt-devel-1.4-9.fc15.x86_64, x64-64 unwind-dw2.s has .pushsection .note.stapsdt,"?","note" .balign 4 .4byte 992f-991f,994f-993f,3 991: .asciz "stapsdt" 992: .balign 4 993: .8byte 990b .8byte _.stapsdt.base .8byte 0 .asciz "libgcc" .asciz "unwind" .asciz "8@%rdi 8@%rsi" 994: .balign 4 .popsection # 0 "" 2 # 1555 "/export/gnu/import/git/gcc-x32/libgcc/../gcc/unwind-dw2.c" 1 .ifndef _.stapsdt.base .pushsection .stapsdt.base,"aG","progbits",.stapsdt.base,comdat .weak _.stapsdt.base .hidden _.stapsdt.base _.stapsdt.base: .space 1 .size _.stapsdt.base,1 It is unsafe since .stapsdt.base section may be deleted by another .stapsdt.base section group and it leads to undefined reference error in .note.stapsdt section. 2 sections must be put in the same section group.