1 files changed, 25 insertions, 0 deletions

diff --git a/src/test/ui/issues/issue-3904.rs b/src/test/ui/issues/issue-3904.rs
new file mode 100644
index 000000000..7beb91a28
--- /dev/null
+++ b/src/test/ui/issues/issue-3904.rs
@@ -0,0 +1,25 @@
+// run-pass
+fn example_err(prog: &str, arg: &str) {
+    println!("{}: {}", prog, arg)
+}
+
+fn exit<F>(print: F, prog: &str, arg: &str) where F: FnOnce(&str, &str) {
+    print(prog, arg);
+}
+
+struct X<F> where F: FnOnce(&str, &str) {
+    err: F,
+}
+
+impl<F> X<F> where F: FnOnce(&str, &str) {
+    pub fn boom(self) {
+        exit(self.err, "prog", "arg");
+    }
+}
+
+pub fn main(){
+    let val = X {
+        err: example_err,
+    };
+    val.boom();
+}