1 // Copyright 2013-2014 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
11 // NOTE Instantiating an empty enum is UB. This test may break in the future.
13 // LLDB can't handle zero-sized values
20 // gdb-command:print first
21 // gdbg-check:$1 = {<No data fields>}
22 // gdbr-check:$1 = <error reading variable>
24 // gdb-command:print second
25 // gdbg-check:$2 = {<No data fields>}
26 // gdbr-check:$2 = <error reading variable>
28 #![allow(unused_variables)]
29 #![feature(omit_gdb_pretty_printer_section)]
30 #![feature(maybe_uninit)]
31 #![omit_gdb_pretty_printer_section]
33 use std::mem::MaybeUninit;
36 enum AnotherNilEnum {}
38 // This test relies on gdbg printing the string "{<No data fields>}" for empty
39 // structs (which may change some time)
40 // The error from gdbr is expected since nil enums are not supposed to exist.
43 let first: ANilEnum = MaybeUninit::uninitialized().into_inner();
44 let second: AnotherNilEnum = MaybeUninit::uninitialized().into_inner();