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-rw-r--r--tests/ui/traits/next-solver/overflow/exponential-trait-goals.rs19
1 files changed, 19 insertions, 0 deletions
diff --git a/tests/ui/traits/next-solver/overflow/exponential-trait-goals.rs b/tests/ui/traits/next-solver/overflow/exponential-trait-goals.rs
new file mode 100644
index 000000000..a465bcecf
--- /dev/null
+++ b/tests/ui/traits/next-solver/overflow/exponential-trait-goals.rs
@@ -0,0 +1,19 @@
+// compile-flags: -Znext-solver
+
+trait Trait {}
+
+struct W<T>(T);
+
+impl<T, U> Trait for W<(W<T>, W<U>)>
+where
+ W<T>: Trait,
+ W<U>: Trait,
+{
+}
+
+fn impls<T: Trait>() {}
+
+fn main() {
+ impls::<W<_>>();
+ //~^ ERROR overflow evaluating the requirement `W<_>: Trait`
+}