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-rw-r--r--src/test/ui/coherence/coherence_copy_like_err_struct.rs22
1 files changed, 22 insertions, 0 deletions
diff --git a/src/test/ui/coherence/coherence_copy_like_err_struct.rs b/src/test/ui/coherence/coherence_copy_like_err_struct.rs
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index 000000000..fe39370c9
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+++ b/src/test/ui/coherence/coherence_copy_like_err_struct.rs
@@ -0,0 +1,22 @@
+// aux-build:coherence_copy_like_lib.rs
+
+// Test that we are able to introduce a negative constraint that
+// `MyType: !MyTrait` along with other "fundamental" wrappers.
+
+extern crate coherence_copy_like_lib as lib;
+
+struct MyType { x: i32 }
+
+trait MyTrait { fn foo() {} }
+impl<T: lib::MyCopy> MyTrait for T { }
+
+// `MyStruct` is not declared fundamental, therefore this would
+// require that
+//
+// MyStruct<MyType>: !MyTrait
+//
+// which we cannot approve.
+impl MyTrait for lib::MyStruct<MyType> { }
+//~^ ERROR E0119
+
+fn main() { }