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Diffstat (limited to 'src/test/ui/traits/wf-object/no-duplicates.rs')
-rw-r--r-- | src/test/ui/traits/wf-object/no-duplicates.rs | 33 |
1 files changed, 0 insertions, 33 deletions
diff --git a/src/test/ui/traits/wf-object/no-duplicates.rs b/src/test/ui/traits/wf-object/no-duplicates.rs deleted file mode 100644 index 678ede582..000000000 --- a/src/test/ui/traits/wf-object/no-duplicates.rs +++ /dev/null @@ -1,33 +0,0 @@ -// The purpose of this test is to demonstrate that duplicating object safe traits -// that are not auto-traits is rejected even though one could reasonably accept this. - -// Some arbitrary object-safe trait: -trait Obj {} - -// Demonstrate that recursive expansion of trait aliases doesn't affect stable behavior: -type _0 = dyn Obj + Obj; -//~^ ERROR only auto traits can be used as additional traits in a trait object [E0225] - -// Some variations: - -type _1 = dyn Send + Obj + Obj; -//~^ ERROR only auto traits can be used as additional traits in a trait object [E0225] - -type _2 = dyn Obj + Send + Obj; -//~^ ERROR only auto traits can be used as additional traits in a trait object [E0225] - -type _3 = dyn Obj + Send + Send; // But it is OK to duplicate auto traits. - -// Take higher ranked types into account. - -// Note that `'a` and `'b` are intentionally different to make sure we consider -// them semantically the same. -trait ObjL<'l> {} -type _4 = dyn for<'a> ObjL<'a> + for<'b> ObjL<'b>; -//~^ ERROR only auto traits can be used as additional traits in a trait object [E0225] - -trait ObjT<T> {} -type _5 = dyn ObjT<for<'a> fn(&'a u8)> + ObjT<for<'b> fn(&'b u8)>; -//~^ ERROR only auto traits can be used as additional traits in a trait object [E0225] - -fn main() {} |