https://blogs.gentoo.org/ago/2020/07/04/gentoo-tinderbox/ Issue: sci-chemistry/prekin-6.51.081122-r1 fails to compile (lto). Discovered on: amd64 (internal ref: lto_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 795964 [details] build.log build log and emerge --info
*** Bug 871480 has been marked as a duplicate of this bug. ***
The bug has been referenced in the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=f40b613cc49c45dd04deaf5266f57ad0040f2f67 commit f40b613cc49c45dd04deaf5266f57ad0040f2f67 Author: David Seifert <soap@gentoo.org> AuthorDate: 2023-03-18 18:28:25 +0000 Commit: David Seifert <soap@gentoo.org> CommitDate: 2023-03-18 18:28:25 +0000 package.mask: Last rite sci-chemistry/prekin Bug: https://bugs.gentoo.org/862438 Signed-off-by: David Seifert <soap@gentoo.org> profiles/package.mask | 6 ++++++ 1 file changed, 6 insertions(+)
The bug has been closed via the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=e8705e27aa47338599ae10b2f412b316ddf42a31 commit e8705e27aa47338599ae10b2f412b316ddf42a31 Author: David Seifert <soap@gentoo.org> AuthorDate: 2023-04-21 08:54:22 +0000 Commit: David Seifert <soap@gentoo.org> CommitDate: 2023-04-21 08:54:22 +0000 sci-chemistry/prekin: treeclean Closes: https://bugs.gentoo.org/862438 Signed-off-by: David Seifert <soap@gentoo.org> profiles/package.mask | 6 --- sci-chemistry/prekin/Manifest | 1 - .../prekin/files/6.51.081122-Makefile.patch | 39 ----------------- .../prekin/files/6.51.081122-overflow.patch | 26 ------------ .../files/prekin-6.51.081122-fno-common.patch | 34 --------------- sci-chemistry/prekin/metadata.xml | 8 ---- sci-chemistry/prekin/prekin-6.51.081122-r1.ebuild | 49 ---------------------- 7 files changed, 163 deletions(-)
