add feature gate `const_indexing`

tracking issue is #29947

3 files changed, 5 insertions, 0 deletions

diff --git a/src/test/compile-fail/const-array-oob-arith.rs b/src/test/compile-fail/const-array-oob-arith.rs
index bca3cd74d24..9c07abdc36d 100644
--- a/src/test/compile-fail/const-array-oob-arith.rs
+++ b/src/test/compile-fail/const-array-oob-arith.rs
@@ -8,6 +8,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+#![feature(const_indexing)]
+
 const ARR: [i32; 6] = [42, 43, 44, 45, 46, 47];
 const IDX: usize = 3;
 const VAL: i32 = ARR[IDX];
diff --git a/src/test/compile-fail/const-array-oob.rs b/src/test/compile-fail/const-array-oob.rs
index da9f6bd247e..15426febbcd 100644
--- a/src/test/compile-fail/const-array-oob.rs
+++ b/src/test/compile-fail/const-array-oob.rs
@@ -8,6 +8,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+#![feature(const_indexing)]
+
 const FOO: [u32; 3] = [1, 2, 3];
 const BAR: u32 = FOO[5]; // no error, because the error below occurs before regular const eval
 
diff --git a/src/test/run-pass/array_const_index-1.rs b/src/test/run-pass/array_const_index-1.rs
index 63f0a844880..3e4504eb195 100644
--- a/src/test/run-pass/array_const_index-1.rs
+++ b/src/test/run-pass/array_const_index-1.rs
@@ -8,6 +8,7 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+#![feature(const_indexing)]
 
 fn main() {
     const ARR: [i32; 6] = [42, 43, 44, 45, 46, 47];