Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1

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

1 files changed, 32 insertions, 0 deletions

diff --git a/src/test/ui/iterators/issue-58952-filter-type-length.rs b/src/test/ui/iterators/issue-58952-filter-type-length.rs
new file mode 100644
index 000000000..ffbe89a14
--- /dev/null
+++ b/src/test/ui/iterators/issue-58952-filter-type-length.rs
@@ -0,0 +1,32 @@
+// run-pass
+//! This snippet causes the type length to blowup exponentially,
+//! so check that we don't accidentially exceed the type length limit.
+// FIXME: Once the size of iterator adaptors is further reduced,
+// increase the complexity of this test.
+use std::collections::VecDeque;
+
+fn main() {
+    let c = 2;
+    let bv = vec![2];
+    let b = bv
+        .iter()
+        .filter(|a| **a == c);
+
+    let _a = vec![1, 2, 3]
+        .into_iter()
+        .filter(|a| b.clone().any(|b| *b == *a))
+        .filter(|a| b.clone().any(|b| *b == *a))
+        .filter(|a| b.clone().any(|b| *b == *a))
+        .filter(|a| b.clone().any(|b| *b == *a))
+        .filter(|a| b.clone().any(|b| *b == *a))
+        .filter(|a| b.clone().any(|b| *b == *a))
+        .filter(|a| b.clone().any(|b| *b == *a))
+        .filter(|a| b.clone().any(|b| *b == *a))
+        .filter(|a| b.clone().any(|b| *b == *a))
+        .filter(|a| b.clone().any(|b| *b == *a))
+        .filter(|a| b.clone().any(|b| *b == *a))
+        .filter(|a| b.clone().any(|b| *b == *a))
+        .filter(|a| b.clone().any(|b| *b == *a))
+        .filter(|a| b.clone().any(|b| *b == *a))
+        .collect::<VecDeque<_>>();
+}