src/test/ui/coherence/coherence_copy_like_err_fundamental_struct.rs


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24

// Test that we are able to introduce a negative constraint that
// `MyType: !MyTrait` along with other "fundamental" wrappers.

// aux-build:coherence_copy_like_lib.rs
// build-pass (FIXME(62277): could be check-pass?)
// skip-codgen
#![allow(dead_code)]

extern crate coherence_copy_like_lib as lib;

struct MyType { x: i32 }

trait MyTrait { fn foo() {} }
impl<T: lib::MyCopy> MyTrait for T { }

// `MyFundamentalStruct` is declared fundamental, so we can test that
//
//    MyFundamentalStruct<MyTrait>: !MyTrait
//
// Huzzah.
impl MyTrait for lib::MyFundamentalStruct<MyType> { }


fn main() { }