Function dump_traceback_thread_frames

crates/stdlib/src/faulthandler.rs:350–366

(
        fd: i32,
        thread_id: u64,
        is_current: bool,
        frames: &[rustpython_vm::vm::FramePtr],
    )

    /// Each `FramePtr` must point to a live frame (caller holds the Mutex).
    #[cfg(all(any(unix, windows), feature = "threading"))]
    fn dump_traceback_thread_frames(
        fd: i32,
        thread_id: u64,
        is_current: bool,
        frames: &[rustpython_vm::vm::FramePtr],
    ) {
        write_thread_id(fd, thread_id, is_current);

        if frames.is_empty() {
            puts(fd, "  <no Python frame>\n");
        } else {
            for fp in frames.iter().rev() {
                // SAFETY: caller holds the Mutex, so the owning thread can't pop.
                dump_frame_from_ref(fd, unsafe { fp.as_ref() });
            }
        }
    }

    #[derive(FromArgs)]
    struct DumpTracebackArgs {