diff options
Diffstat (limited to 'src/test/ui/coherence/coherence_copy_like_err_struct.rs')
-rw-r--r-- | src/test/ui/coherence/coherence_copy_like_err_struct.rs | 22 |
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 new file mode 100644 index 000000000..fe39370c9 --- /dev/null +++ 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() { } |