Merge pull request #2347 from rust-lang/rustc-pull

Rustc pull update

1 files changed, 28 insertions, 0 deletions

diff --git a/compiler/rustc_codegen_gcc/tests/run/float.rs b/compiler/rustc_codegen_gcc/tests/run/float.rs
new file mode 100644
index 00000000000..424fa1cf4ad
--- /dev/null
+++ b/compiler/rustc_codegen_gcc/tests/run/float.rs
@@ -0,0 +1,28 @@
+// Compiler:
+//
+// Run-time:
+//   status: 0
+
+#![feature(const_black_box)]
+
+fn main() {
+    use std::hint::black_box;
+
+    macro_rules! check {
+        ($ty:ty, $expr:expr) => {{
+            const EXPECTED: $ty = $expr;
+            assert_eq!($expr, EXPECTED);
+        }};
+    }
+
+    check!(i32, (black_box(0.0f32) as i32));
+
+    check!(u64, (black_box(f32::NAN) as u64));
+    check!(u128, (black_box(f32::NAN) as u128));
+
+    check!(i64, (black_box(f64::NAN) as i64));
+    check!(u64, (black_box(f64::NAN) as u64));
+
+    check!(i16, (black_box(f32::MIN) as i16));
+    check!(i16, (black_box(f32::MAX) as i16));
+}