Auto merge of #84216 - RalfJung:black-box, r=Mark-Simulacrum

move core::hint::black_box under its own feature gate

The `black_box` function had its own RFC and is tracked separately from the `test` feature at https://github.com/rust-lang/rust/issues/64102. Let's reflect this in the feature gate.

To avoid breaking all the benchmarks, libtest's `test::black_box` is a wrapping definition, not a reexport -- this means it is still under the `test` feature gate.

6 files changed, 6 insertions, 6 deletions

diff --git a/src/test/ui/consts/cast-discriminant-zst-enum.rs b/src/test/ui/consts/cast-discriminant-zst-enum.rs
index 9c02d232e13..66b76627c02 100644
--- a/src/test/ui/consts/cast-discriminant-zst-enum.rs
+++ b/src/test/ui/consts/cast-discriminant-zst-enum.rs
@@ -1,6 +1,6 @@
 // run-pass
 // Test a ZST enum whose dicriminant is ~0i128. This caused an ICE when casting to a i32.
-#![feature(test)]
+#![feature(bench_black_box)]
 use std::hint::black_box;
 
 #[derive(Copy, Clone)]
diff --git a/src/test/ui/consts/const_discriminant.rs b/src/test/ui/consts/const_discriminant.rs
index d016d236dbf..a47f6af0296 100644
--- a/src/test/ui/consts/const_discriminant.rs
+++ b/src/test/ui/consts/const_discriminant.rs
@@ -1,6 +1,6 @@
 // run-pass
 #![feature(const_discriminant)]
-#![feature(test)]
+#![feature(bench_black_box)]
 #![allow(dead_code)]
 
 use std::mem::{discriminant, Discriminant};
diff --git a/src/test/ui/sanitize/address.rs b/src/test/ui/sanitize/address.rs
index cee73b0425a..9a26a351d99 100644
--- a/src/test/ui/sanitize/address.rs
+++ b/src/test/ui/sanitize/address.rs
@@ -7,7 +7,7 @@
 // error-pattern: AddressSanitizer: stack-buffer-overflow
 // error-pattern: 'xs' (line 15) <== Memory access at offset
 
-#![feature(test)]
+#![feature(bench_black_box)]
 
 use std::hint::black_box;
 
diff --git a/src/test/ui/sanitize/hwaddress.rs b/src/test/ui/sanitize/hwaddress.rs
index 88769b7cb45..bb6986740d9 100644
--- a/src/test/ui/sanitize/hwaddress.rs
+++ b/src/test/ui/sanitize/hwaddress.rs
@@ -7,7 +7,7 @@
 // run-fail
 // error-pattern: HWAddressSanitizer: tag-mismatch
 
-#![feature(test)]
+#![feature(bench_black_box)]
 
 use std::hint::black_box;
 
diff --git a/src/test/ui/sanitize/leak.rs b/src/test/ui/sanitize/leak.rs
index c9f10fe4f46..f63f81352da 100644
--- a/src/test/ui/sanitize/leak.rs
+++ b/src/test/ui/sanitize/leak.rs
@@ -6,7 +6,7 @@
 // run-fail
 // error-pattern: LeakSanitizer: detected memory leaks
 
-#![feature(test)]
+#![feature(bench_black_box)]
 
 use std::hint::black_box;
 use std::mem;
diff --git a/src/test/ui/sanitize/memory.rs b/src/test/ui/sanitize/memory.rs
index a26649a5800..48a482a13aa 100644
--- a/src/test/ui/sanitize/memory.rs
+++ b/src/test/ui/sanitize/memory.rs
@@ -13,7 +13,7 @@
 
 #![feature(core_intrinsics)]
 #![feature(start)]
-#![feature(test)]
+#![feature(bench_black_box)]
 
 use std::hint::black_box;
 use std::mem::MaybeUninit;