2 files changed, 12 insertions, 0 deletions
diff --git a/src/test/ui/target-feature/missing-plusminus-2.rs b/src/test/ui/target-feature/missing-plusminus-2.rs
new file mode 100644
index 00000000000..13168728902
--- /dev/null
+++ b/src/test/ui/target-feature/missing-plusminus-2.rs
@@ -0,0 +1,6 @@
+// compile-flags: -Ctarget-feature=rdrand --crate-type=rlib --target=x86_64-unknown-linux-gnu
+// build-pass
+// needs-llvm-components: x86
+
+#![feature(no_core)]
+#![no_core]
diff --git a/src/test/ui/target-feature/missing-plusminus-2.stderr b/src/test/ui/target-feature/missing-plusminus-2.stderr
new file mode 100644
index 00000000000..5ed2652a06d
--- /dev/null
+++ b/src/test/ui/target-feature/missing-plusminus-2.stderr
@@ -0,0 +1,6 @@
+warning: unknown feature specified for `-Ctarget-feature`: `rdrand`
+   |
+   = note: features must begin with a `+` to enable or `-` to disable it
+
+warning: 1 warning emitted
+