937 2011-03-29 05:19:05 +0000 Adding -feliminate-dwarf2-dups to compiler flags for libnfsidmap causes prelink to segfault 2012-08-24 21:39:45 +0000 1 1 6 Yocto Project Subprojects Cross-prelink cross-prelink unspecified x86 x86 RESOLVED FIXED Medium normal 1.3 1 richard.purdie mark.hatle jessica.zhang sgw yp.cp.watcher yp.watcher --- --- --- oldest_to_newest 13022 0 richard.purdie 2011-03-29 05:19:05 +0000 Adding -feliminate-dwarf2-dups to FULL_OPTIMIZATION which are the flags passed to the compiler and rebuilding libnfsidmap results in a segfault at rootfs construction time of poky-image-sato on qemux86: Size before prelinking 323300. | /media/build2/builds/rptest/b2/tmp/sysroots/x86_64-linux/usr/sbin/prelink: /usr/lib/libnfsidmap.so.0.3.0: Symbol section index outside of section numbers | /media/build2/builds/rptest/b2/tmp/work/qemux86-poky-linux/poky-image-sato-1.0-r0/temp/run.do_rootfs.17151: line 138: 23698 Segmentation fault (core dumped) /media/build2/builds/rptest/b2/tmp/sysroots/x86_64-linux/usr/sbin/prelink --root /media/build2/builds/rptest/b2/tmp/work/qemux86-poky-linux/poky-image-sato-1.0-r0/rootfs -amR This isn't the only binary affected, its just an easy to reproduce test case. It appears prelink has some problem with the -feliminate-dwarf2-dups optimisation flag. 13026 1 richard.purdie 2011-03-29 06:28:28 +0000 In master we've dropped the problematic compiler flag for now but we should still figure out this problem... 17926 2 mark.hatle 2012-01-03 10:25:49 +0000 Update. I've not yet reproduced this. However, since the issue was filed a number of fixes for dwarf2 issues have gone into the prelinker. 17976 3 mark.hatle 2012-01-05 12:32:29 +0000 current testing on head of poky indicates an internal compiler error: /home/mhatle/git/oss/poky/build-test/tmp/work/x86_64-poky-linux/gcc-runtime-4.6.2+svnr181430-r20/gcc-4_6-branch/build.x86_64-poky-linux.x86_64-poky-linux/libstdc++-v3/include/bits/unordered_set.h:398:1: internal compiler error: in build_abbrev_table, at dwarf2out.c:10534 Unable to reproduce this issue due to the ICE... 17978 4 mark.hatle 2012-01-05 13:09:21 +0000 -feliminate-dwarf2-dups is "iffy" with the current version of gcc. It is likely addressed in gcc 4.7. We need to wait until that has been released/update before work can result on this item. 21191 5 mark.hatle 2012-05-08 15:40:07 +0000 Uprev to gcc 4.7 is a prerequisite to this item. It is expected most of the work is simply validation and that 4.7 will correct the issue. 24469 6 mark.hatle 2012-08-24 21:39:45 +0000 It is believed now that we have the new gcc this is fixed, it should be retested.