From 698f8c2f01ea549d77d7dc3338a12e04c11057b9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 17 Apr 2024 14:02:58 +0200 Subject: Adding upstream version 1.64.0+dfsg1. Signed-off-by: Daniel Baumann --- src/test/ui/pattern/usefulness/match-ref-ice.rs | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) create mode 100644 src/test/ui/pattern/usefulness/match-ref-ice.rs (limited to 'src/test/ui/pattern/usefulness/match-ref-ice.rs') diff --git a/src/test/ui/pattern/usefulness/match-ref-ice.rs b/src/test/ui/pattern/usefulness/match-ref-ice.rs new file mode 100644 index 000000000..dee110f96 --- /dev/null +++ b/src/test/ui/pattern/usefulness/match-ref-ice.rs @@ -0,0 +1,16 @@ +#![deny(unreachable_patterns)] + +// The arity of `ref x` is always 1. If the pattern is compared to some non-structural type whose +// arity is always 0, an ICE occurs. +// +// Related issue: #23009 + +fn main() { + let homura = [1, 2, 3]; + + match homura { + [1, ref _madoka, 3] => (), + [1, 2, 3] => (), //~ ERROR unreachable pattern + [_, _, _] => (), + } +} -- cgit v1.2.3