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authorFelix S. Klock II <pnkfelix@pnkfx.org>2018-08-30 13:16:59 +0200
committerFelix S. Klock II <pnkfelix@pnkfx.org>2018-09-06 13:00:26 +0200
commit7834c2284801766f9925576e8f4d05d7cb7b23dd (patch)
treeb0676510293a1ab5317291bd79f4136754dae764 /src/test/ui/run-pass/traits/trait-inheritance-num5.rs
parent20ca02569ae3e1dc29962e92739fbab632abf241 (diff)
downloadrust-7834c2284801766f9925576e8f4d05d7cb7b23dd.tar.gz
rust-7834c2284801766f9925576e8f4d05d7cb7b23dd.zip
Migrated slew of run-pass tests to various subdirectories of `ui/run-pass/`.
Diffstat (limited to 'src/test/ui/run-pass/traits/trait-inheritance-num5.rs')
-rw-r--r--src/test/ui/run-pass/traits/trait-inheritance-num5.rs35
1 files changed, 35 insertions, 0 deletions
diff --git a/src/test/ui/run-pass/traits/trait-inheritance-num5.rs b/src/test/ui/run-pass/traits/trait-inheritance-num5.rs
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+++ b/src/test/ui/run-pass/traits/trait-inheritance-num5.rs
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+// 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.
+
+// pretty-expanded FIXME #23616
+
+pub trait NumCast: Sized {
+    fn from(i: i32) -> Option<Self>;
+}
+
+pub trait NumExt: PartialEq + NumCast {}
+
+impl NumExt for f32 {}
+impl NumExt for isize {}
+
+impl NumCast for f32 {
+    fn from(i: i32) -> Option<f32> { Some(i as f32) }
+}
+impl NumCast for isize {
+    fn from(i: i32) -> Option<isize> { Some(i as isize) }
+}
+
+fn num_eq_one<T:NumExt>() -> T {
+    NumCast::from(1).unwrap()
+}
+
+pub fn main() {
+    num_eq_one::<isize>(); // you need to actually use the function to trigger the ICE
+}