1 files changed, 48 insertions, 0 deletions
diff --git a/tests/ui/std/fs-nul-byte-paths.rs b/tests/ui/std/fs-nul-byte-paths.rs
new file mode 100644
index 00000000000..5c37980127d
--- /dev/null
+++ b/tests/ui/std/fs-nul-byte-paths.rs
@@ -0,0 +1,48 @@
+//@ run-pass
+
+#![allow(deprecated)]
+//@ ignore-wasm32 no cwd
+//@ ignore-sgx no files
+
+use std::fs;
+use std::io;
+
+fn assert_invalid_input<T>(on: &str, result: io::Result<T>) {
+    fn inner(on: &str, result: io::Result<()>) {
+        match result {
+            Ok(()) => panic!("{} didn't return an error on a path with NUL", on),
+            Err(e) => assert!(e.kind() == io::ErrorKind::InvalidInput,
+                              "{} returned a strange {:?} on a path with NUL", on, e.kind()),
+        }
+    }
+    inner(on, result.map(drop))
+}
+
+fn main() {
+    assert_invalid_input("File::open", fs::File::open("\0"));
+    assert_invalid_input("File::create", fs::File::create("\0"));
+    assert_invalid_input("remove_file", fs::remove_file("\0"));
+    assert_invalid_input("metadata", fs::metadata("\0"));
+    assert_invalid_input("symlink_metadata", fs::symlink_metadata("\0"));
+
+    // If `dummy_file` does not exist, then we might get another unrelated error
+    let dummy_file = std::env::current_exe().unwrap();
+
+    assert_invalid_input("rename1", fs::rename("\0", "a"));
+    assert_invalid_input("rename2", fs::rename(&dummy_file, "\0"));
+    assert_invalid_input("copy1", fs::copy("\0", "a"));
+    assert_invalid_input("copy2", fs::copy(&dummy_file, "\0"));
+    assert_invalid_input("hard_link1", fs::hard_link("\0", "a"));
+    assert_invalid_input("hard_link2", fs::hard_link(&dummy_file, "\0"));
+    assert_invalid_input("soft_link1", fs::soft_link("\0", "a"));
+    assert_invalid_input("soft_link2", fs::soft_link(&dummy_file, "\0"));
+    assert_invalid_input("read_link", fs::read_link("\0"));
+    assert_invalid_input("canonicalize", fs::canonicalize("\0"));
+    assert_invalid_input("create_dir", fs::create_dir("\0"));
+    assert_invalid_input("create_dir_all", fs::create_dir_all("\0"));
+    assert_invalid_input("remove_dir", fs::remove_dir("\0"));
+    assert_invalid_input("remove_dir_all", fs::remove_dir_all("\0"));
+    assert_invalid_input("read_dir", fs::read_dir("\0"));
+    assert_invalid_input("set_permissions",
+                         fs::set_permissions("\0", fs::metadata(".").unwrap().permissions()));
+}