ln -svf /dev/null /tmp/a > /dev/full panics

Author: oech3

src/uu/ln/src/ln.rs

@@ -6,6 +6,7 @@
 // spell-checker:ignore (ToDO) srcpath targetpath EEXIST
 
 use clap::{Arg, ArgAction, Command};
+use std::io::{Write, stdout};
 use uucore::display::Quotable;
 use uucore::error::{FromIo, UError, UResult};
 use uucore::fs::{make_path_relative_to, paths_refer_to_same_file};
@@ -455,10 +456,15 @@ fn link(src: &Path, dst: &Path, settings: &Settings) -> UResult<()> {
     }
 
     if settings.verbose {
-        print!("{} -> {}", dst.quote(), source.quote());
+        let mut out = stdout();
+        write!(out, "{} -> {}", dst.quote(), source.quote())?;
         match backup_path {
-            Some(path) => println!(" ({})", translate!("ln-backup", "backup" => path.quote())),
-            None => println!(),
+            Some(path) => writeln!(
+                out,
+                " ({})",
+                translate!("ln-backup", "backup" => path.quote())
+            )?,
+            None => writeln!(out)?,
         }
     }
     Ok(())