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-rw-r--r--tests/ui/pattern/slice-pattern-refutable.rs36
1 files changed, 36 insertions, 0 deletions
diff --git a/tests/ui/pattern/slice-pattern-refutable.rs b/tests/ui/pattern/slice-pattern-refutable.rs
new file mode 100644
index 000000000..1be3c6ef8
--- /dev/null
+++ b/tests/ui/pattern/slice-pattern-refutable.rs
@@ -0,0 +1,36 @@
+// Test that we do not infer the expected types of patterns to an array
+// if we're in a refutable pattern.
+#![allow(unused_variables)]
+
+struct Zeroes;
+
+impl Into<[usize; 3]> for Zeroes {
+ fn into(self) -> [usize; 3] {
+ [0; 3]
+ }
+}
+
+fn let_else() {
+ let [a, b, c] = Zeroes.into() else {
+ //~^ ERROR type annotations needed
+ unreachable!();
+ };
+}
+
+fn if_let() {
+ if let [a, b, c] = Zeroes.into() {
+ //~^ ERROR type annotations needed
+ unreachable!();
+ }
+}
+
+fn if_let_else() {
+ if let [a, b, c] = Zeroes.into() {
+ //~^ ERROR type annotations needed
+ unreachable!();
+ } else {
+ unreachable!();
+ }
+}
+
+fn main() {}