https://blogs.gentoo.org/ago/2020/07/04/gentoo-tinderbox/ Issue: dev-util/tokei-12.1.2 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 796516 [details] build.log build log and emerge --info
Error(s) that match a know pattern in addition to what has been reported in the summary: /usr/lib/gcc/x86_64-pc-linux-gnu/12.1.1/../../../../x86_64-pc-linux-gnu/bin/ld: /var/tmp/portage/dev-util/tokei-12.1.2/work/tokei-12.1.2/target/release/deps/tokei-b6709f8a933dc99a.git2-e1cbda9cdc1faa8d.git2.51fa208f-cgu.11.rcgu.o.rcgu.o: in function `git2::error::Error::last_error': /usr/lib/gcc/x86_64-pc-linux-gnu/12.1.1/../../../../x86_64-pc-linux-gnu/bin/ld: git2.51fa208f-cgu.11:(.text._ZN4git25error5Error10last_error17h0f99fcec34edc5fbE+0x150): undefined reference to `git_error_last' /usr/lib/gcc/x86_64-pc-linux-gnu/12.1.1/../../../../x86_64-pc-linux-gnu/bin/ld: git2.51fa208f-cgu.11:(.text._ZN4git25error5Error10last_error17h0f99fcec34edc5fbE+0x1a2): undefined reference to `git_error_clear' /usr/lib/gcc/x86_64-pc-linux-gnu/12.1.1/../../../../x86_64-pc-linux-gnu/bin/ld: libgit2_sys.a797284e-cgu.0:(.text._ZN3std4sync4once4Once9call_once28_$u7b$$u7b$closure$u7d$$u7d$17h9a9d4a3f5b948b50E.llvm.13625299658111491942+0x47): undefined reference to `git_error_last' /usr/lib/gcc/x86_64-pc-linux-gnu/12.1.1/../../../../x86_64-pc-linux-gnu/bin/ld: tokei.72eb05a3-cgu.8:(.text._ZN4git24repo10Repository4init17h37bbcd5571d1815aE+0x217): undefined reference to `git_repository_init_ext' git2.51fa208f-cgu.11:(.text._ZN4git25error5Error10last_error17h0f99fcec34edc5fbE+0x38): undefined reference to `git_error_last' libgit2_sys.a797284e-cgu.0:(.text._ZN3std4sync4once4Once9call_once28_$u7b$$u7b$closure$u7d$$u7d$17h9a9d4a3f5b948b50E.llvm.13625299658111491942+0x15): undefined reference to `git_libgit2_init' tokei.72eb05a3-cgu.7:(.text._ZN5tokei5utils2fs5tests13custom_ignore17h4379e3bb9f174c1dE+0x104): undefined reference to `git_repository_free' tokei.72eb05a3-cgu.7:(.text._ZN5tokei5utils2fs5tests23no_ignore_vcs_gitignore17hd7a00d23a512f44eE+0xf8): undefined reference to `git_repository_free' tokei.72eb05a3-cgu.7:(.text._ZN5tokei5utils2fs5tests24no_ignore_vcs_gitexclude17h2cc621bb046d28d4E+0xf8): undefined reference to `git_repository_free' tokei.72eb05a3-cgu.7:(.text._ZN5tokei5utils2fs5tests31no_ignore_implies_vcs_gitignore17h4ea421e686ba2203E+0xf8): undefined reference to `git_repository_free' tokei.72eb05a3-cgu.7:(.text._ZN5tokei5utils2fs5tests33no_ignore_dot_still_vcs_gitignore17hcbf16f577a6db2afE+0xf0): undefined reference to `git_repository_free' tokei.72eb05a3-cgu.8:(.text._ZN4git24repo10Repository4init17h37bbcd5571d1815aE+0x1a7): undefined reference to `git_repository_init_init_options' error: linking with `x86_64-pc-linux-gnu-gcc` failed: exit status: 1
Now `cargo.eclass` calls `filter-lto` in `cargo_src_compile()`, so this is not reproducible.
