1 files changed, 16 insertions, 0 deletions
diff --git a/tests/ui/coherence/coherence-overlap-negative-trait.rs b/tests/ui/coherence/coherence-overlap-negative-trait.rs
new file mode 100644
index 00000000000..8059d23ffd2
--- /dev/null
+++ b/tests/ui/coherence/coherence-overlap-negative-trait.rs
@@ -0,0 +1,16 @@
+// check-pass
+// aux-build:error_lib.rs
+//
+// Check that if we promise to not impl what would overlap it doesn't actually overlap
+
+#![feature(with_negative_coherence)]
+
+extern crate error_lib as lib;
+use lib::Error;
+
+trait From<T> {}
+
+impl From<&str> for Box<dyn Error> {}
+impl<E> From<E> for Box<dyn Error> where E: Error {}
+
+fn main() {}