diff options
Diffstat (limited to 'tests/ui/mir/mir-inlining/ice-issue-77306-2.rs')
-rw-r--r-- | tests/ui/mir/mir-inlining/ice-issue-77306-2.rs | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/tests/ui/mir/mir-inlining/ice-issue-77306-2.rs b/tests/ui/mir/mir-inlining/ice-issue-77306-2.rs new file mode 100644 index 000000000..cb2084013 --- /dev/null +++ b/tests/ui/mir/mir-inlining/ice-issue-77306-2.rs @@ -0,0 +1,32 @@ +// run-pass +// compile-flags:-Zmir-opt-level=3 + +struct Cursor {} +struct TokenTree {} + +impl Iterator for Cursor { + type Item = TokenTree; + + fn next(&mut self) -> Option<TokenTree> { + None + } +} + +fn tokenstream_probably_equal_for_proc_macro() { + fn break_tokens(_tree: TokenTree) -> impl Iterator<Item = TokenTree> { + let token_trees: Vec<TokenTree> = vec![]; + token_trees.into_iter() + } + + let c1 = Cursor {}; + let c2 = Cursor {}; + + let mut t1 = c1.flat_map(break_tokens); + let mut t2 = c2.flat_map(break_tokens); + + for (_t1, _t2) in t1.by_ref().zip(t2.by_ref()) {} +} + +fn main() { + tokenstream_probably_equal_for_proc_macro(); +} |