[Pkg-rust-maintainers] Bug#1097829: rust-coreutils: ftbfs with GCC-15

[Matthias Klose]

Package: src:rust-coreutils
Version: 0.0.27-3
Severity: important
Tags: sid forky
User: debian-gcc at lists.debian.org
Usertags: ftbfs-gcc-15

[This bug is NOT targeted to the upcoming trixie release]

Please keep this issue open in the bug tracker for the package it
was filed for.  If a fix in another package is required, please
file a bug for the other package (or clone), and add a block in this
package. Please keep the issue open until the package can be built in
a follow-up test rebuild.

The package fails to build in a test rebuild on at least amd64 with
gcc-15/g++-15, but succeeds to build with gcc-14/g++-14. The
severity of this report will be raised before the forky release.

The full build log can be found at:
http://qa-logs.debian.net/2025/02/16/amd64exp/rust-coreutils_0.0.27-3_unstable_gccexp.log.gz
The last lines of the build log are at the end of this report.

To build with GCC 15, either set CC=gcc-15 CXX=g++-15 explicitly,
or install the gcc, g++, gfortran, ... packages from experimental.

  apt-get -t=experimental install g++ 

GCC 15 now defaults to the C23/C++23 standards, exposing many FTBFS.
Other Common build failures are new warnings resulting in build failures
with -Werror turned on, or new/dropped symbols in Debian symbols files.
For other C/C++ related build failures see the porting guide at
http://gcc.gnu.org/gcc-15/porting_to.html

[...]
  cargo:warning=      |                                                        ^~~~~~~~~~~~~~~~~~~~~~~~~~
  cargo:warning=      |                                                        |
  cargo:warning=      |                                                        int (*)(OnigUChar *, CalloutTagVal,  void *) {aka int (*)(unsigned char *, long int,  void *)}
  cargo:warning=oniguruma/src/st.h:55:31: note: expected ‘int (*)(void)’ but argument is of type ‘int (*)(OnigUChar *, CalloutTagVal,  void *)’ {aka ‘int (*)(unsigned char *, long int,  void *)’}
  cargo:warning=   55 | int st_foreach _((st_table *, int (*)(ANYARGS), st_data_t));
  cargo:warning=      |                               ^~~~~~~~~~~~~~~~
  cargo:warning=oniguruma/src/st.h:35:18: note: in definition of macro ‘_’
  cargo:warning=   35 | # define _(args) args
  cargo:warning=      |                  ^~~~
  cargo:warning=oniguruma/src/regparse.c:1866:1: note: ‘i_callout_callout_list_set’ declared here
  cargo:warning= 1866 | i_callout_callout_list_set(UChar* key, CalloutTagVal e, void* arg)
  cargo:warning=      | ^~~~~~~~~~~~~~~~~~~~~~~~~~
  cargo:warning=oniguruma/src/regparse.c: In function ‘callout_tag_table_clear’:
  cargo:warning=oniguruma/src/regparse.c:1932:24: error: passing argument 2 of ‘onig_st_foreach’ from incompatible pointer type [-Wincompatible-pointer-types]
  cargo:warning= 1932 |     onig_st_foreach(t, i_free_callout_tag_entry, 0);
  cargo:warning=      |                        ^~~~~~~~~~~~~~~~~~~~~~~~
  cargo:warning=      |                        |
  cargo:warning=      |                        int (*)(OnigUChar *, CalloutTagVal,  void *) {aka int (*)(unsigned char *, long int,  void *)}
  cargo:warning=oniguruma/src/st.h:55:31: note: expected ‘int (*)(void)’ but argument is of type ‘int (*)(OnigUChar *, CalloutTagVal,  void *)’ {aka ‘int (*)(unsigned char *, long int,  void *)’}
  cargo:warning=   55 | int st_foreach _((st_table *, int (*)(ANYARGS), st_data_t));
  cargo:warning=      |                               ^~~~~~~~~~~~~~~~
  cargo:warning=oniguruma/src/st.h:35:18: note: in definition of macro ‘_’
  cargo:warning=   35 | # define _(args) args
  cargo:warning=      |                  ^~~~
  cargo:warning=oniguruma/src/regparse.c:1922:1: note: ‘i_free_callout_tag_entry’ declared here
  cargo:warning= 1922 | i_free_callout_tag_entry(UChar* key, CalloutTagVal e, void* arg ARG_UNUSED)
  cargo:warning=      | ^~~~~~~~~~~~~~~~~~~~~~~~

  --- stderr


  error occurred: Command "cc" "-O3" "-ffunction-sections" "-fdata-sections" "-fPIC" "-gdwarf-4" "-fno-omit-frame-pointer" "-m64" "-I" "/build/reproducible-path/rust-coreutils-0.0.27/target/release/build/onig_sys-778c28e6b51143e0/out" "-I" "oniguruma/src" "-g" "-O2" "-Werror=implicit-function-declaration" "-ffile-prefix-map=/build/reproducible-path/rust-coreutils-0.0.27=." "-fstack-protector-strong" "-fstack-clash-protection" "-Wformat" "-Werror=format-security" "-fcf-protection" "-DHAVE_UNISTD_H=1" "-DHAVE_SYS_TYPES_H=1" "-DHAVE_SYS_TIME_H=1" "-o" "/build/reproducible-path/rust-coreutils-0.0.27/target/release/build/onig_sys-778c28e6b51143e0/out/c77b18e714869709-regparse.o" "-c" "oniguruma/src/regparse.c" with args cc did not execute successfully (status code exit status: 1).


warning: build failed, waiting for other jobs to finish...
warning: unexpected `cfg` condition name: `fuzzing`
  --> src/uu/seq/src/seq.rs:18:7
   |
18 | #[cfg(fuzzing)]
   |       ^^^^^^^
   |
   = help: expected names are: `clippy`, `debug_assertions`, `doc`, `docsrs`, `doctest`, `feature`, `fmt_debug`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `rustfmt`, `sanitize`, `sanitizer_cfi_generalize_pointers`, `sanitizer_cfi_normalize_integers`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `ub_checks`, `unix`, and `windows`
   = help: consider using a Cargo feature instead
   = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
            [lints.rust]
            unexpected_cfgs = { level = "warn", check-cfg = ['cfg(fuzzing)'] }
   = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(fuzzing)");` to the top of the `build.rs`
   = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
   = note: `#[warn(unexpected_cfgs)]` on by default

warning: unexpected `cfg` condition name: `fuzzing`
  --> src/uu/seq/src/seq.rs:20:11
   |
20 | #[cfg(not(fuzzing))]
   |           ^^^^^^^
   |
   = help: consider using a Cargo feature instead
   = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
            [lints.rust]
            unexpected_cfgs = { level = "warn", check-cfg = ['cfg(fuzzing)'] }
   = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(fuzzing)");` to the top of the `build.rs`
   = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration

warning: `uu_seq` (lib) generated 2 warnings
make[2]: *** [GNUmakefile:282: build-coreutils] Error 101
make[2]: Leaving directory '/build/reproducible-path/rust-coreutils-0.0.27'
make[1]: *** [debian/rules:23: override_dh_auto_install] Error 2
make[1]: Leaving directory '/build/reproducible-path/rust-coreutils-0.0.27'
make: *** [debian/rules:15: binary] Error 2
dpkg-buildpackage: error: debian/rules binary subprocess returned exit status 2