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-rw-r--r--tests/ui/issues/issue-50865-private-impl-trait/main.rs16
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diff --git a/tests/ui/issues/issue-50865-private-impl-trait/main.rs b/tests/ui/issues/issue-50865-private-impl-trait/main.rs
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index 000000000..16dfac53a
--- /dev/null
+++ b/tests/ui/issues/issue-50865-private-impl-trait/main.rs
@@ -0,0 +1,16 @@
+// run-pass
+// aux-build:lib.rs
+
+// Regression test for #50865.
+// When using generics or specifying the type directly, this example
+// codegens `foo` internally. However, when using a private `impl Trait`
+// function which references another private item, `foo` (in this case)
+// wouldn't be codegenned until main.rs used `bar`, as with impl Trait
+// it is not cast to `fn()` automatically to satisfy e.g.
+// `fn foo() -> fn() { ... }`.
+
+extern crate lib;
+
+fn main() {
+ lib::bar(()); // Error won't happen if bar is called from same crate
+}