1 files changed, 79 insertions, 0 deletions

diff --git a/tests/ui/issues/issue-2904.rs b/tests/ui/issues/issue-2904.rs
new file mode 100644
index 00000000000..73aa78f09b9
--- /dev/null
+++ b/tests/ui/issues/issue-2904.rs
@@ -0,0 +1,79 @@
+// build-pass
+#![allow(unused_must_use)]
+#![allow(dead_code)]
+#![allow(unused_mut)]
+#![allow(non_camel_case_types)]
+
+// Map representation
+
+use std::fmt;
+use std::io::prelude::*;
+use square::{bot, wall, rock, lambda, closed_lift, open_lift, earth, empty};
+
+enum square {
+    bot,
+    wall,
+    rock,
+    lambda,
+    closed_lift,
+    open_lift,
+    earth,
+    empty
+}
+
+impl fmt::Debug for square {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        write!(f, "{}", match *self {
+          bot => { "R".to_string() }
+          wall => { "#".to_string() }
+          rock => { "*".to_string() }
+          lambda => { "\\".to_string() }
+          closed_lift => { "L".to_string() }
+          open_lift => { "O".to_string() }
+          earth => { ".".to_string() }
+          empty => { " ".to_string() }
+        })
+    }
+}
+
+fn square_from_char(c: char) -> square {
+    match c  {
+      'R'  => { bot }
+      '#'  => { wall }
+      '*'  => { rock }
+      '\\' => { lambda }
+      'L'  => { closed_lift }
+      'O'  => { open_lift }
+      '.'  => { earth }
+      ' '  => { empty }
+      _ => {
+        println!("invalid square: {}", c);
+        panic!()
+      }
+    }
+}
+
+fn read_board_grid<rdr:'static + Read>(mut input: rdr)
+                   -> Vec<Vec<square>> {
+    let mut input: &mut dyn Read = &mut input;
+    let mut grid = Vec::new();
+    let mut line = [0; 10];
+    input.read(&mut line);
+    let mut row = Vec::new();
+    for c in &line {
+        row.push(square_from_char(*c as char))
+    }
+    grid.push(row);
+    let width = grid[0].len();
+    for row in &grid { assert_eq!(row.len(), width) }
+    grid
+}
+
+mod test {
+    #[test]
+    pub fn trivial_to_string() {
+        assert_eq!(lambda.to_string(), "\\")
+    }
+}
+
+pub fn main() {}