Merging upstream version 1.68.2+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 17 insertions, 0 deletions

diff --git a/tests/ui/tail-cps.rs b/tests/ui/tail-cps.rs
new file mode 100644
index 000000000..f186683ea
--- /dev/null
+++ b/tests/ui/tail-cps.rs
@@ -0,0 +1,17 @@
+// run-pass
+
+fn checktrue(rs: bool) -> bool { assert!((rs)); return true; }
+
+pub fn main() { let k = checktrue; evenk(42, k); oddk(45, k); }
+
+fn evenk(n: isize, k: fn(bool) -> bool) -> bool {
+    println!("evenk");
+    println!("{}", n);
+    if n == 0 { return k(true); } else { return oddk(n - 1, k); }
+}
+
+fn oddk(n: isize, k: fn(bool) -> bool) -> bool {
+    println!("oddk");
+    println!("{}", n);
+    if n == 0 { return k(false); } else { return evenk(n - 1, k); }
+}