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-rw-r--r--tests/ui/nll/ty-outlives/ty-param-implied-bounds.rs28
1 files changed, 28 insertions, 0 deletions
diff --git a/tests/ui/nll/ty-outlives/ty-param-implied-bounds.rs b/tests/ui/nll/ty-outlives/ty-param-implied-bounds.rs
new file mode 100644
index 000000000..9042844e8
--- /dev/null
+++ b/tests/ui/nll/ty-outlives/ty-param-implied-bounds.rs
@@ -0,0 +1,28 @@
+// compile-flags:-Zverbose
+// check-pass
+
+// Test that we assume that universal types like `T` outlive the
+// function body.
+
+use std::cell::Cell;
+
+fn twice<F, T>(value: T, mut f: F)
+where
+ F: FnMut(Cell<&T>),
+{
+ f(Cell::new(&value));
+ f(Cell::new(&value));
+}
+
+fn generic<T>(value: T) {
+ // No error here:
+ twice(value, |r| invoke(r));
+}
+
+fn invoke<'a, T>(x: Cell<&'a T>)
+where
+ T: 'a,
+{
+}
+
+fn main() {}