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    use fmt;
    use io::prelude::*;
    use sys::stdio::panic_output;
    use thread;

    pub fn dumb_print(args: fmt::Arguments) {
        if let Some(mut out) = panic_output() {
            let _ = out.write_fmt(args);
        }
    }

    // Other platforms should use the appropriate platform-specific mechanism for
    // aborting the process.  If no platform-specific mechanism is available,
    // ::intrinsics::abort() may be used instead.  The above implementations cover
    // all targets currently supported by libstd.

    pub fn abort(args: fmt::Arguments) -> ! {
        dumb_print(format_args!("fatal runtime error: {}\n", args));
        unsafe { ::sys::abort_internal(); }
    }

    #[allow(dead_code)] // stack overflow detection not enabled on all platforms
    pub unsafe fn report_overflow() {
        dumb_print(format_args!("\nthread '{}' has overflowed its stack\n",
                                thread::current().name().unwrap_or("<unknown>")));
    }

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