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diff --git a/tests/incremental/issue-51409.rs b/tests/incremental/issue-51409.rs
new file mode 100644
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+++ b/tests/incremental/issue-51409.rs
@@ -0,0 +1,10 @@
+// revisions: rpass1
+
+// Regression test that `infer_outlives_predicates` can be
+// used with incremental without an ICE.
+
+struct Foo<'a, T> {
+  x: &'a T
+}
+
+fn main() { }