Bug 1113368
| Summary: | -flto with gcc 4.9 causes broken debuginfo packages | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Mattias Ellert <mattias.ellert> |
| Component: | gcc | Assignee: | Jakub Jelinek <jakub> |
| Status: | CLOSED WONTFIX | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | unspecified | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | rawhide | CC: | jakub, law |
| 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: | 2014-06-26 06:11:33 UTC | Type: | Bug |
| 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: | 1101935 | ||
If you want usable debug info, you can't use -flto, at least for the past few years and likely next few years too. |
Description of problem: Debuginfo packages are not containing sources when -flto is used with gcc 4.9 Version-Release number of selected component (if applicable): gcc-4.9.0-12.fc21.x86_64 How reproducible: Always Steps to Reproduce: 1. Compile the R-qtl package for Fedora 21 Actual results: Debuginfo package without sources Expected results: Debuginfo package with sources Additional info: Compiling the package for Fedora 20 with gcc 4.8 works as expected - debuginfo package contains sources. If I manually hack the /usr/lib64/R/etc/Makeconf file to change the compiler flags used by R module compilation from "LTO = -flto" to "LTO = -fno-lto" the debuginfo package contains sources as expected. On Fedora 20 (gcc-4.8.2-7.fc20.x86_64) the compiled module contains references to the source files: $ readelf -a qtl.so | grep FILE 33: 0000000000000000 0 FILE LOCAL DEFAULT ABS crtstuff.c 42: 0000000000000000 0 FILE LOCAL DEFAULT ABS countXO.c 43: 0000000000000000 0 FILE LOCAL DEFAULT ABS discan.c 44: 0000000000000000 0 FILE LOCAL DEFAULT ABS discan_covar.c 45: 0000000000000000 0 FILE LOCAL DEFAULT ABS effectscan.c 46: 0000000000000000 0 FILE LOCAL DEFAULT ABS fill_geno_nodblXO.c On Fedora 21 (gcc-4.9.0-12.fc21.x86_64) it does not: $ readelf -a qtl.so | grep 'FILE' 26: 0000000000000000 0 FILE LOCAL DEFAULT ABS crtstuff.c 35: 0000000000000000 0 FILE LOCAL DEFAULT ABS ccuxkewq.ltrans0.o 36: 0000000000000000 0 FILE LOCAL DEFAULT ABS ccuxkewq.ltrans1.o 38: 0000000000000000 0 FILE LOCAL DEFAULT ABS ccuxkewq.ltrans2.o 39: 0000000000000000 0 FILE LOCAL DEFAULT ABS ccuxkewq.ltrans3.o 40: 0000000000000000 0 FILE LOCAL DEFAULT ABS ccuxkewq.ltrans4.o