1 files changed, 33 insertions, 0 deletions
diff --git a/tests/ui/macros/macro-path-prelude-shadowing.rs b/tests/ui/macros/macro-path-prelude-shadowing.rs
new file mode 100644
index 000000000..d71812000
--- /dev/null
+++ b/tests/ui/macros/macro-path-prelude-shadowing.rs
@@ -0,0 +1,33 @@
+// aux-build:macro-in-other-crate.rs
+
+#![feature(decl_macro)]
+
+macro_rules! add_macro_expanded_things_to_macro_prelude {() => {
+    #[macro_use]
+    extern crate macro_in_other_crate;
+}}
+
+add_macro_expanded_things_to_macro_prelude!();
+
+mod m1 {
+    fn check() {
+        inline!(); // OK. Theoretically ambiguous, but we do not consider built-in attributes
+                   // as candidates for non-attribute macro invocations to avoid regressions
+                   // on stable channel
+    }
+}
+
+mod m2 {
+    pub mod std {
+        pub macro panic() {}
+    }
+}
+
+mod m3 {
+    use m2::*; // glob-import user-defined `std`
+    fn check() {
+        std::panic!(); //~ ERROR `std` is ambiguous
+    }
+}
+
+fn main() {}