1 files changed, 8 insertions, 0 deletions
diff --git a/tests/ui/macros/builtin-prelude-no-accidents.rs b/tests/ui/macros/builtin-prelude-no-accidents.rs
new file mode 100644
index 000000000..01691a82d
--- /dev/null
+++ b/tests/ui/macros/builtin-prelude-no-accidents.rs
@@ -0,0 +1,8 @@
+// Names of public modules in libstd and libcore don't accidentally get into prelude
+// because macros with the same names are in prelude.
+
+fn main() {
+    env::current_dir; //~ ERROR use of undeclared crate or module `env`
+    type A = panic::PanicInfo; //~ ERROR use of undeclared crate or module `panic`
+    type B = vec::Vec<u8>; //~ ERROR use of undeclared crate or module `vec`
+}