rust/src/test/debuginfo/boxed-struct.rs
Felix S. Klock II 270f0eef73 Add : Box<_> or ::Box<_> type annotations to various places.
This is the kind of change that one is expected to need to make to
accommodate overloaded-`box`.

----

Note that this is not *all* of the changes necessary to accommodate
Issue 22181.  It is merely the subset of those cases where there was
already a let-binding in place that made it easy to add the necesasry
type ascription.

(For unnamed intermediate `Box` values, one must go down a different
route; `Box::new` is the option that maximizes portability, but has
potential inefficiency depending on whether the call is inlined.)

----

There is one place worth note, `run-pass/coerce-match.rs`, where I
used an ugly form of `Box<_>` type ascription where I would have
preferred to use `Box::new` to accommodate overloaded-`box`.  I
deliberately did not use `Box::new` here, because that is already done
in coerce-match-calls.rs.

----

Precursor for overloaded-`box` and placement-`in`; see Issue 22181.
2015-03-03 20:29:01 +01:00

66 lines
1.7 KiB
Rust

// Copyright 2013-2014 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.
// min-lldb-version: 310
// compile-flags:-g
// === GDB TESTS ===================================================================================
// gdb-command:run
// gdb-command:print *unique
// gdb-check:$1 = {x = 99, y = 999, z = 9999, w = 99999}
// gdb-command:print *unique_dtor
// gdb-check:$2 = {x = 77, y = 777, z = 7777, w = 77777}
// === LLDB TESTS ==================================================================================
// lldb-command:run
// lldb-command:print *unique
// lldb-check:[...]$0 = StructWithSomePadding { x: 99, y: 999, z: 9999, w: 99999 }
// lldb-command:print *unique_dtor
// lldb-check:[...]$1 = StructWithDestructor { x: 77, y: 777, z: 7777, w: 77777 }
#![allow(unused_variables)]
#![feature(box_syntax)]
#![omit_gdb_pretty_printer_section]
struct StructWithSomePadding {
x: i16,
y: i32,
z: i32,
w: i64
}
struct StructWithDestructor {
x: i16,
y: i32,
z: i32,
w: i64
}
impl Drop for StructWithDestructor {
fn drop(&mut self) {}
}
fn main() {
let unique: Box<_> = box StructWithSomePadding { x: 99, y: 999, z: 9999, w: 99999 };
let unique_dtor: Box<_> = box StructWithDestructor { x: 77, y: 777, z: 7777, w: 77777 };
zzz(); // #break
}
fn zzz() { () }