diff options
Diffstat (limited to 'tests/ui/traits/next-solver/cycles/inductive-not-on-stack.rs')
| -rw-r--r-- | tests/ui/traits/next-solver/cycles/inductive-not-on-stack.rs | 46 |
1 files changed, 0 insertions, 46 deletions
diff --git a/tests/ui/traits/next-solver/cycles/inductive-not-on-stack.rs b/tests/ui/traits/next-solver/cycles/inductive-not-on-stack.rs deleted file mode 100644 index 78683372580..00000000000 --- a/tests/ui/traits/next-solver/cycles/inductive-not-on-stack.rs +++ /dev/null @@ -1,46 +0,0 @@ -//@ compile-flags: -Znext-solver -#![feature(rustc_attrs, trivial_bounds)] - -// We have to be careful here: -// -// We either have the provisional result of `A -> B -> A` on the -// stack, which is a fully coinductive cycle. Accessing the -// provisional result for `B` as part of the `A -> C -> B -> A` cycle -// has to make sure we don't just use the result of `A -> B -> A` as the -// new cycle is inductive. -// -// Alternatively, if we have `A -> C -> A` first, then `A -> B -> A` has -// a purely inductive stack, so something could also go wrong here. - -#[rustc_coinductive] -trait A {} -#[rustc_coinductive] -trait B {} -trait C {} - -impl<T: B + C> A for T {} -impl<T: A> B for T {} -impl<T: B> C for T {} - -fn impls_a<T: A>() {} - -// The same test with reordered where clauses to make sure we're actually testing anything. -#[rustc_coinductive] -trait AR {} -#[rustc_coinductive] -trait BR {} -trait CR {} - -impl<T: CR + BR> AR for T {} -impl<T: AR> BR for T {} -impl<T: BR> CR for T {} - -fn impls_ar<T: AR>() {} - -fn main() { - impls_a::<()>(); - //~^ ERROR overflow evaluating the requirement `(): A` - - impls_ar::<()>(); - //~^ ERROR overflow evaluating the requirement `(): AR` -} |
