https://blogs.gentoo.org/ago/2020/07/04/gentoo-tinderbox/ Issue: sys-cluster/scorep-7.1-r1 fails tests (lto). Discovered on: amd64 (internal ref: guru_tinderbox) NOTE: This machine uses lto with CFLAGS=-flto -Werror=odr -Werror=lto-type-mismatch -Werror=strict-aliasing Here is a bit of explanation: -Werror=lto-type-mismatch: User to find possible runtime issues in packages. It likely means the package is unsafe to build & use with LTO. For projects using the same identifier but with different types across different files, they must be fixed to be consistent across the codebase. -Werror=odr: Used to find possible runtime issues in packages. These bugs are a problem anyway but may be even worse when combined with LTO. C++ code must comply with the One Definition Rule (ODR) - see https://en.cppreference.com/w/cpp/language/definition#One_Definition_Rule. -Werror=strict-aliasing: Used to find possible runtime issues in packages. These bugs are a problem anyway but may be even worse when combined with LTO. Workarounds: - If upstream is friendly and still active, file a bug upstream. For emulators, codecs, games, or multimedia packages, it may be worth just applying a workaround instead, as upstreams sometimes aren't receptive to these bugs (VALID FOR ALL). - Use the new 'filter-lto' from flag-o-matic.eclass as it's likely to be unsafe with LTO (VALID FOR lto-type-mismatch - odr). - Fix it yourself if interested, of course (VALID FOR ALL). - Append-flags -fno-strict-aliasing (VALID FOR strict-aliasing). - Use memcpy() but a union is sometimes suitable too (VALID FOR strict-aliasing). - -fstrict-aliasing is implied by -O2, so this must be addressed in some form (VALID FOR strict-aliasing). See also: https://marc.info/?l=gentoo-dev&m=165639574126280&w=2
Created attachment 797875 [details] build.log.xz build log and emerge --info (compressed because it exceeds attachment limit, use 'xzless' to read it)
The bug has been closed via the following commit(s): https://gitweb.gentoo.org/repo/proj/guru.git/commit/?id=fee6a029a0bb13eb22c8e008966023adc4f7a39f commit fee6a029a0bb13eb22c8e008966023adc4f7a39f Author: Anna (cybertailor) Vyalkova <cyber+gentoo@sysrq.in> AuthorDate: 2023-03-06 19:54:40 +0000 Commit: Anna (cybertailor) Vyalkova <cyber+gentoo@sysrq.in> CommitDate: 2023-03-06 19:55:27 +0000 sys-cluster/scorep: treeclean Closes: https://bugs.gentoo.org/852026 Closes: https://bugs.gentoo.org/852050 Closes: https://bugs.gentoo.org/852053 Closes: https://bugs.gentoo.org/863785 Closes: https://bugs.gentoo.org/885369 Signed-off-by: Anna (cybertailor) Vyalkova <cyber+gentoo@sysrq.in> profiles/package.mask | 1 - sys-cluster/scorep/Manifest | 2 - sys-cluster/scorep/metadata.xml | 17 ---- sys-cluster/scorep/scorep-7.1-r1.ebuild | 166 -------------------------------- sys-cluster/scorep/scorep-7.1.ebuild | 166 -------------------------------- 5 files changed, 352 deletions(-)
