uutils/coreutils · error

Disabling rust signal handlers failed

Error message

Disabling rust signal handlers failed

What it means

Error "Disabling rust signal handlers failed" thrown in uutils/coreutils.

Source

Thrown at src/uucore_procs/src/lib.rs:52

        // before main() to capture whether SIGPIPE was ignored by the parent process.
        #[cfg(all(#signals, unix))]
        uucore::init_startup_state_capture!();

        pub fn uumain(args: impl uucore::Args) -> i32 {
            #stream

            // Restore SIGPIPE to default if it wasn't explicitly ignored by parent.
            // The Rust runtime ignores SIGPIPE, but we need to respect the parent's
            // signal disposition for proper pipeline behavior (GNU compatibility).
            // needed even for true --version
            #[cfg(unix)]
            if !uucore::signals::sigpipe_was_ignored() {
                let _ = uucore::signals::enable_pipe_errors();
            }

            // disable rust signal handlers (otherwise processes don't dump core after e.g. one SIGSEGV)
            #[cfg(all(#signals, unix))]
            uucore::disable_rust_signal_handlers().expect("Disabling rust signal handlers failed");
            let result = uumain(args);
            match result {
                Ok(()) => uucore::error::get_exit_code(),
                Err(e) => {
                    let s = format!("{e}");
                    if s != "" {
                        uucore::show_error!("{s}");
                    }
                    if e.usage() {
                        use std::io::{stderr, Write as _};
                        let _ = writeln!(stderr(),"Try '{} --help' for more information.", uucore::execution_phrase());
                    }
                    e.code()
                }
            }
        }
    );

View on GitHub (pinned to 0b77ced485)

Solutions

1. Check platform support for disabling signal handlers and required privileges.
2. Handle the failure by keeping the default handlers instead of aborting.

When it happens

Trigger: Occurs when disabling Rust's runtime signal handlers fails during process setup.

Common situations: Platform restrictions preventing signal handler manipulation at utility startup.

AI-assisted analysis of uutils/coreutils@0b77ced485 (2026-08-19). Data as JSON: /api/errors/88d24adeeaa347b6. Report an issue: GitHub.