Public bug reported: [ SRU Justification ] As per comment #4 in https://bugs.launchpad.net/ubuntu/+source/binutils/+bug/1655181 the undefined weak fix should not have been backported because it breaks IFUNC on ELFv1, and can't be fixed without a much larger backport from 2.27. This patch breaks glibc builds on PPC64 ELFv1.
See also https://sourceware.org/bugzilla/show_bug.cgi?id=20472 I will be pushing this upload via the ubuntu-security-proposed PPA, as this regression also exists in security and if we ever want to do a glibc security update, we need the fix there as well. [ Test Case ] See that glibc now builds on powerpc in xenial, when it didn't with the previous version. [ Regression Potential ] We lived fine without this patch before, and will do again in the future. Removing it fixes ELFv1 glibc builds (and presumably anything else that uses IFUNC), but should have no other obvious impact. ** Affects: binutils (Ubuntu) Importance: Undecided Status: Invalid ** Affects: binutils (Ubuntu Xenial) Importance: Undecided Assignee: Adam Conrad (adconrad) Status: In Progress ** Also affects: binutils (Ubuntu Xenial) Importance: Undecided Status: New ** Changed in: binutils (Ubuntu) Status: New => Invalid ** Changed in: binutils (Ubuntu Xenial) Assignee: (unassigned) => Adam Conrad (adconrad) ** Changed in: binutils (Ubuntu Xenial) Status: New => In Progress -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to binutils in Ubuntu. https://bugs.launchpad.net/bugs/1807448 Title: [SRU] Patch power9-001.diff breaks IFUNC on ELFv1 Status in binutils package in Ubuntu: Invalid Status in binutils source package in Xenial: In Progress Bug description: [ SRU Justification ] As per comment #4 in https://bugs.launchpad.net/ubuntu/+source/binutils/+bug/1655181 the undefined weak fix should not have been backported because it breaks IFUNC on ELFv1, and can't be fixed without a much larger backport from 2.27. This patch breaks glibc builds on PPC64 ELFv1. See also https://sourceware.org/bugzilla/show_bug.cgi?id=20472 I will be pushing this upload via the ubuntu-security-proposed PPA, as this regression also exists in security and if we ever want to do a glibc security update, we need the fix there as well. [ Test Case ] See that glibc now builds on powerpc in xenial, when it didn't with the previous version. [ Regression Potential ] We lived fine without this patch before, and will do again in the future. Removing it fixes ELFv1 glibc builds (and presumably anything else that uses IFUNC), but should have no other obvious impact. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/binutils/+bug/1807448/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
