8 files changed, 32 insertions, 6 deletions
diff --git a/tests/ui/error-codes/E0094.rs b/tests/ui/error-codes/E0094.rs
index a2ec932c124..97ebcff99dc 100644
--- a/tests/ui/error-codes/E0094.rs
+++ b/tests/ui/error-codes/E0094.rs
@@ -1,4 +1,4 @@
-#![feature(intrinsics)]
+#![feature(intrinsics, rustc_attrs)]
 
 extern "rust-intrinsic" {
     #[rustc_safe_intrinsic]
diff --git a/tests/ui/extern/extern-with-type-bounds.rs b/tests/ui/extern/extern-with-type-bounds.rs
index a72aa4171a1..99e9801fd40 100644
--- a/tests/ui/extern/extern-with-type-bounds.rs
+++ b/tests/ui/extern/extern-with-type-bounds.rs
@@ -1,4 +1,4 @@
-#![feature(intrinsics)]
+#![feature(intrinsics, rustc_attrs)]
 
 extern "rust-intrinsic" {
     // Real example from libcore
diff --git a/tests/ui/intrinsics/feature-gate-safe-intrinsic.rs b/tests/ui/intrinsics/feature-gate-safe-intrinsic.rs
new file mode 100644
index 00000000000..ffaa4d771d9
--- /dev/null
+++ b/tests/ui/intrinsics/feature-gate-safe-intrinsic.rs
@@ -0,0 +1,6 @@
+#[rustc_safe_intrinsic]
+//~^ ERROR the `#[rustc_safe_intrinsic]` attribute is used internally to mark intrinsics as safe
+//~| ERROR attribute should be applied to intrinsic functions
+fn safe() {}
+
+fn main() {}
diff --git a/tests/ui/intrinsics/feature-gate-safe-intrinsic.stderr b/tests/ui/intrinsics/feature-gate-safe-intrinsic.stderr
new file mode 100644
index 00000000000..8aeb56598ec
--- /dev/null
+++ b/tests/ui/intrinsics/feature-gate-safe-intrinsic.stderr
@@ -0,0 +1,20 @@
+error[E0658]: the `#[rustc_safe_intrinsic]` attribute is used internally to mark intrinsics as safe
+  --> $DIR/feature-gate-safe-intrinsic.rs:1:1
+   |
+LL | #[rustc_safe_intrinsic]
+   | ^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = help: add `#![feature(rustc_attrs)]` to the crate attributes to enable
+
+error: attribute should be applied to intrinsic functions
+  --> $DIR/feature-gate-safe-intrinsic.rs:1:1
+   |
+LL | #[rustc_safe_intrinsic]
+   | ^^^^^^^^^^^^^^^^^^^^^^^
+...
+LL | fn safe() {}
+   | ------------ not an intrinsic function
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0658`.
diff --git a/tests/ui/intrinsics/intrinsic-alignment.rs b/tests/ui/intrinsics/intrinsic-alignment.rs
index 30b8a21269a..6f9df64417e 100644
--- a/tests/ui/intrinsics/intrinsic-alignment.rs
+++ b/tests/ui/intrinsics/intrinsic-alignment.rs
@@ -1,7 +1,7 @@
 // run-pass
 // ignore-wasm32-bare seems not important to test here
 
-#![feature(intrinsics)]
+#![feature(intrinsics, rustc_attrs)]
 
 mod rusti {
     extern "rust-intrinsic" {
diff --git a/tests/ui/repr/16-bit-repr-c-enum.rs b/tests/ui/repr/16-bit-repr-c-enum.rs
index 2acfde4be46..d4fea2b192b 100644
--- a/tests/ui/repr/16-bit-repr-c-enum.rs
+++ b/tests/ui/repr/16-bit-repr-c-enum.rs
@@ -5,7 +5,7 @@
 // [avr] compile-flags: --target=avr-unknown-gnu-atmega328 --crate-type=rlib
 // [msp430] needs-llvm-components: msp430
 // [msp430] compile-flags: --target=msp430-none-elf --crate-type=rlib
-#![feature(no_core, lang_items, intrinsics, staged_api)]
+#![feature(no_core, lang_items, intrinsics, staged_api, rustc_attrs)]
 #![no_core]
 #![crate_type = "lib"]
 #![stable(feature = "", since = "")]
diff --git a/tests/ui/structs-enums/rec-align-u32.rs b/tests/ui/structs-enums/rec-align-u32.rs
index ee704198d19..b3c323d2a29 100644
--- a/tests/ui/structs-enums/rec-align-u32.rs
+++ b/tests/ui/structs-enums/rec-align-u32.rs
@@ -3,7 +3,7 @@
 #![allow(unused_unsafe)]
 // Issue #2303
 
-#![feature(intrinsics)]
+#![feature(intrinsics, rustc_attrs)]
 
 use std::mem;
 
diff --git a/tests/ui/structs-enums/rec-align-u64.rs b/tests/ui/structs-enums/rec-align-u64.rs
index c3b201fb1c6..de008bcc01d 100644
--- a/tests/ui/structs-enums/rec-align-u64.rs
+++ b/tests/ui/structs-enums/rec-align-u64.rs
@@ -5,7 +5,7 @@
 
 // Issue #2303
 
-#![feature(intrinsics)]
+#![feature(intrinsics, rustc_attrs)]
 
 use std::mem;