Files
binutils-gdb/gdb/testsuite/gdb.rust/unsized.rs
Tom Tromey 506ec52e88 Reimplement Rust slice printing
The current nightly Rust compiler (aka 1.61) added better DWARF
representation for unsized types.  Fixing this is PR rust/21466; but
the code is actually the same as what is required to make slice
printing more useful, which is PR rust/23871.  This patch implements
this.  I tested this against various Rust compilers: 1.48, current
stable, current beta, and current nightly.

Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=21466
Bug: https://sourceware.org/bugzilla/show_bug.cgi?id=23871
2022-04-15 10:34:03 -06:00

36 lines
1.1 KiB
Rust

// Copyright (C) 2017-2022 Free Software Foundation, Inc.
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
#![allow(dead_code)]
#![allow(unused_variables)]
#![allow(unused_assignments)]
struct V<T: ?Sized> {
data: T,
}
type Unsized = V<[u8]>;
fn ignore<T>(x: T) { }
fn main() {
let v: Box<V<[u8; 3]>> = Box::new(V { data: [1, 2, 3] });
let us: Box<Unsized> = v;
let v2 : Box<[u8; 3]> = Box::new([1, 2, 3]);
let us2 : Box<[u8]> = v2;
ignore(us); // set breakpoint here
}