1 files changed, 31 insertions, 0 deletions
diff --git a/tests/ui/float/target-has-reliable-nightly-float.rs b/tests/ui/float/target-has-reliable-nightly-float.rs
new file mode 100644
index 00000000000..ad8600fc635
--- /dev/null
+++ b/tests/ui/float/target-has-reliable-nightly-float.rs
@@ -0,0 +1,31 @@
+//@ run-pass
+//@ compile-flags: --check-cfg=cfg(target_has_reliable_f16,target_has_reliable_f16_math,target_has_reliable_f128,target_has_reliable_f128_math)
+// Verify that the feature gates and config work and are registered as known config
+// options.
+
+#![deny(unexpected_cfgs)]
+#![feature(cfg_target_has_reliable_f16_f128)]
+
+#[cfg(target_has_reliable_f16)]
+pub fn has_f16() {}
+
+#[cfg(target_has_reliable_f16_math)]
+pub fn has_f16_math() {}
+
+#[cfg(target_has_reliable_f128 )]
+pub fn has_f128() {}
+
+#[cfg(target_has_reliable_f128_math)]
+pub fn has_f128_math() {}
+
+fn main() {
+    if cfg!(target_arch = "aarch64") && cfg!(target_os = "linux") {
+        // Aarch64+Linux is one target that has support for all features, so use it to spot
+        // check that the compiler does indeed enable these gates.
+
+        assert!(cfg!(target_has_reliable_f16));
+        assert!(cfg!(target_has_reliable_f16_math));
+        assert!(cfg!(target_has_reliable_f128));
+        assert!(cfg!(target_has_reliable_f128_math));
+    }
+}