From 218caa410aa38c29984be31a5229b9fa717560ee Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 17 Apr 2024 14:19:13 +0200
Subject: Merging upstream version 1.68.2+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 tests/ui/consts/issue-68264-overflow.rs | 43 +++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)
 create mode 100644 tests/ui/consts/issue-68264-overflow.rs

(limited to 'tests/ui/consts/issue-68264-overflow.rs')

diff --git a/tests/ui/consts/issue-68264-overflow.rs b/tests/ui/consts/issue-68264-overflow.rs
new file mode 100644
index 000000000..8f21e0648
--- /dev/null
+++ b/tests/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() {}
-- 
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