regression test.

src/test/ui/issues/auxiliary/xcrate-issue-61711-b.rs

@@ -0,0 +1,5 @@
+// edition:2018
+#![crate_type="lib"]
+#![crate_name="xcrate_issue_61711_b"]
+pub struct Struct;
+pub use crate as alias;

src/test/ui/issues/issue-61711-once-caused-rustc-inf-loop.rs

@@ -0,0 +1,11 @@
+// Issue 61711: A crate pub re-exporting `crate` was causing an
+// infinite loop.
+
+// edition:2018
+// aux-build:xcrate-issue-61711-b.rs
+// compile-flags:--extern xcrate_issue_61711_b
+
+// run-pass
+
+fn f<F: Fn(xcrate_issue_61711_b::Struct)>(_: F) { }
+fn main() { }