From 7d6aef65d80581b4fe726db7fcc592e87072a33d Mon Sep 17 00:00:00 2001 From: Bastian Kauschke Date: Sun, 26 Apr 2020 11:50:58 +0200 Subject: [PATCH] test iterator chain type length blowup --- .../issue-58952-filter-type-length.rs | 31 +++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 src/test/ui/iterators/issue-58952-filter-type-length.rs 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 0000000000000..046e37840849e --- /dev/null +++ b/src/test/ui/iterators/issue-58952-filter-type-length.rs @@ -0,0 +1,31 @@ +// 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. + +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::>(); +}