1 files changed, 8 insertions, 0 deletions
diff --git a/src/test/ui/imports/issue-57539.rs b/src/test/ui/imports/issue-57539.rs
new file mode 100644
index 000000000..90b74eb46
--- /dev/null
+++ b/src/test/ui/imports/issue-57539.rs
@@ -0,0 +1,8 @@
+// edition:2018
+
+mod core {
+    use core; //~ ERROR `core` is ambiguous
+    use crate::*;
+}
+
+fn main() {}