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-rw-r--r--src/test/ui/span/wf-method-late-bound-regions.rs24
1 files changed, 24 insertions, 0 deletions
diff --git a/src/test/ui/span/wf-method-late-bound-regions.rs b/src/test/ui/span/wf-method-late-bound-regions.rs
new file mode 100644
index 000000000..ca9f73d0a
--- /dev/null
+++ b/src/test/ui/span/wf-method-late-bound-regions.rs
@@ -0,0 +1,24 @@
+// A method's receiver must be well-formed, even if it has late-bound regions.
+// Because of this, a method's substs being well-formed does not imply that
+// the method's implied bounds are met.
+
+struct Foo<'b>(Option<&'b ()>);
+
+trait Bar<'b> {
+ fn xmute<'a>(&'a self, u: &'b u32) -> &'a u32;
+}
+
+impl<'b> Bar<'b> for Foo<'b> {
+ fn xmute<'a>(&'a self, u: &'b u32) -> &'a u32 { u }
+}
+
+fn main() {
+ let f = Foo(None);
+ let f2 = f;
+ let dangling = {
+ let pointer = Box::new(42);
+ f2.xmute(&pointer)
+ };
+ //~^^ ERROR `pointer` does not live long enough
+ println!("{}", dangling);
+}