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-rw-r--r--tests/ui/pattern/usefulness/slice_of_empty.rs22
1 files changed, 22 insertions, 0 deletions
diff --git a/tests/ui/pattern/usefulness/slice_of_empty.rs b/tests/ui/pattern/usefulness/slice_of_empty.rs
new file mode 100644
index 000000000..fe0688711
--- /dev/null
+++ b/tests/ui/pattern/usefulness/slice_of_empty.rs
@@ -0,0 +1,22 @@
+#![feature(never_type)]
+#![feature(exhaustive_patterns)]
+#![deny(unreachable_patterns)]
+
+fn main() {}
+
+fn foo(nevers: &[!]) {
+ match nevers {
+ &[] => (),
+ };
+
+ match nevers {
+ &[] => (),
+ &[_] => (), //~ ERROR unreachable pattern
+ &[_, _, ..] => (), //~ ERROR unreachable pattern
+ };
+
+ match nevers {
+ //~^ ERROR non-exhaustive patterns: `&[]` not covered
+ &[_] => (), //~ ERROR unreachable pattern
+ };
+}