}
}
- let discr = Scalar {
+ let tag_mask = !0u128 >> (128 - ity.size().bits());
+ let tag = Scalar {
value: Int(ity, signed),
- valid_range: (min as u128)..=(max as u128)
+ valid_range: (min as u128 & tag_mask)..=(max as u128 & tag_mask),
};
- let abi = if discr.value.size(dl) == size {
- Abi::Scalar(discr.clone())
+ let abi = if tag.value.size(dl) == size {
+ Abi::Scalar(tag.clone())
} else {
Abi::Aggregate { sized: true }
};
tcx.intern_layout(LayoutDetails {
variants: Variants::Tagged {
- discr,
+ discr: tag,
variants
},
fields: FieldPlacement::Arbitrary {
--- /dev/null
+// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+#[derive(Debug)]
+#[repr(i32)]
+enum E {
+ Min = -2147483648i32,
+ _Max = 2147483647i32,
+}
+
+fn main() {
+ assert_eq!(Some(E::Min).unwrap() as i32, -2147483648i32);
+}