Merging upstream version 1.76.0+dfsg1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 29 insertions, 0 deletions

diff --git a/tests/ui/typeck/bad-index-modulo-higher-ranked-regions.rs b/tests/ui/typeck/bad-index-modulo-higher-ranked-regions.rs
new file mode 100644
index 000000000..c8f6db7ae
--- /dev/null
+++ b/tests/ui/typeck/bad-index-modulo-higher-ranked-regions.rs
@@ -0,0 +1,29 @@
+// Test against ICE in #118111
+
+use std::ops::Index;
+
+struct Map<T, F> {
+    f: F,
+    inner: T,
+}
+
+impl<T, F, Idx> Index<Idx> for Map<T, F>
+where
+    T: Index<Idx>,
+    F: FnOnce(&T, Idx) -> Idx,
+{
+    type Output = T::Output;
+
+    fn index(&self, index: Idx) -> &Self::Output {
+        todo!()
+    }
+}
+
+fn main() {
+    Map { inner: [0_usize], f: |_, i: usize| 1_usize }[0];
+    //~^ ERROR cannot index into a value of type
+    // Problem here is that
+    //   `f: |_, i: usize| ...`
+    // should be
+    //   `f: |_: &_, i: usize| ...`
+}