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-rw-r--r--src/test/ui/associated-types/associated-types-issue-20371.rs9
1 files changed, 9 insertions, 0 deletions
diff --git a/src/test/ui/associated-types/associated-types-issue-20371.rs b/src/test/ui/associated-types/associated-types-issue-20371.rs
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+++ b/src/test/ui/associated-types/associated-types-issue-20371.rs
@@ -0,0 +1,9 @@
+// run-pass
+// Test that we are able to have an impl that defines an associated type
+// before the actual trait.
+
+// pretty-expanded FIXME #23616
+
+impl X for f64 { type Y = isize; }
+trait X { type Y; }
+fn main() {}