https://blogs.gentoo.org/ago/2020/07/04/gentoo-tinderbox/ Issue: net-ftp/atftp-0.8.0 fails tests (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 823751 [details] build.log build log and emerge --info
Created attachment 823753 [details] 1-test-suite.log 1-test-suite.log
I can confirm that atftp is currently not suitable to compile with -flto. We're working on that.
The bug has been closed via the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=77fba59fa7b88ad8a598383401a99920ac1da18e commit 77fba59fa7b88ad8a598383401a99920ac1da18e Author: Martin Dummer <martin.dummer@gmx.net> AuthorDate: 2022-12-05 19:02:02 +0000 Commit: Sam James <sam@gentoo.org> CommitDate: 2022-12-06 09:23:08 +0000 net-ftp/atftp: does not run with CFLAGS=-lto Closes: https://bugs.gentoo.org/876939 Signed-off-by: Martin Dummer <martin.dummer@gmx.net> Closes: https://github.com/gentoo/gentoo/pull/28552 Signed-off-by: Sam James <sam@gentoo.org> net-ftp/atftp/atftp-0.8.0.ebuild | 2 ++ 1 file changed, 2 insertions(+)
