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-rw-r--r--src/test/ui/consts/issue-68264-overflow.rs43
1 files changed, 43 insertions, 0 deletions
diff --git a/src/test/ui/consts/issue-68264-overflow.rs b/src/test/ui/consts/issue-68264-overflow.rs
new file mode 100644
index 000000000..8f21e0648
--- /dev/null
+++ b/src/test/ui/consts/issue-68264-overflow.rs
@@ -0,0 +1,43 @@
+// check-pass
+// compile-flags: --emit=mir,link
+// Regression test for issue #68264
+// Checks that we don't encounter overflow
+// when running const-prop on functions with
+// complicated bounds
+pub trait Query {}
+
+pub trait AsQuery {
+ type Query: Query;
+}
+pub trait Table: AsQuery + Sized {}
+
+pub trait LimitDsl {
+ type Output;
+}
+
+pub(crate) trait LoadQuery<Conn, U>: RunQueryDsl<Conn> {}
+
+impl<T: Query> AsQuery for T {
+ type Query = Self;
+}
+
+impl<T> LimitDsl for T
+where
+ T: Table,
+ T::Query: LimitDsl,
+{
+ type Output = <T::Query as LimitDsl>::Output;
+}
+
+pub(crate) trait RunQueryDsl<Conn>: Sized {
+ fn first<U>(self, _conn: &Conn) -> U
+ where
+ Self: LimitDsl,
+ Self::Output: LoadQuery<Conn, U>,
+ {
+ // Overflow is caused by this function body
+ unimplemented!()
+ }
+}
+
+fn main() {}