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-rw-r--r--src/test/ui/issues/issue-22312.rs17
1 files changed, 17 insertions, 0 deletions
diff --git a/src/test/ui/issues/issue-22312.rs b/src/test/ui/issues/issue-22312.rs
new file mode 100644
index 000000000..4e359b341
--- /dev/null
+++ b/src/test/ui/issues/issue-22312.rs
@@ -0,0 +1,17 @@
+use std::ops::Index;
+
+pub trait Array2D: Index<usize> + Sized {
+ fn rows(&self) -> usize;
+ fn columns(&self) -> usize;
+ fn get<'a>(&'a self, y: usize, x: usize) -> Option<&'a <Self as Index<usize>>::Output> {
+ if y >= self.rows() || x >= self.columns() {
+ return None;
+ }
+ let i = y * self.columns() + x;
+ let indexer = &(*self as &dyn Index<usize, Output = <Self as Index<usize>>::Output>);
+ //~^ERROR non-primitive cast
+ Some(indexer.index(i))
+ }
+}
+
+fn main() {}