os-rust/src/test/debuginfo/union-smoke.rs

// Copyright 2016 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
// ignore-macos FIXME(#37479)

// compile-flags:-g

// === GDB TESTS ===================================================================================

// gdb-command:run
// gdb-command:print u
// gdbg-check:$1 = {a = {__0 = 2 '\002', __1 = 2 '\002'}, b = 514}
// gdbr-check:$1 = union_smoke::U {a: (2, 2), b: 514}
// gdb-command:print union_smoke::SU
// gdbg-check:$2 = {a = {__0 = 1 '\001', __1 = 1 '\001'}, b = 257}
// gdbr-check:$2 = union_smoke::U {a: (1, 1), b: 257}

// === LLDB TESTS ==================================================================================

// lldb-command:run
// lldb-command:print u
// lldb-check:[...]$0 = { a = ('\x02', '\x02') b = 514 }
// lldb-command:print union_smoke::SU
// lldb-check:[...]$1 = 257

#![allow(unused)]
#![feature(omit_gdb_pretty_printer_section)]
#![omit_gdb_pretty_printer_section]
#![feature(untagged_unions)]

union U {
    a: (u8, u8),
    b: u16,
}

static mut SU: U = U { a: (1, 1) };

fn main() {
    let u = U { b: (2 << 8) + 2 };
    unsafe { SU = U { a: (1, 1) } }

    zzz(); // #break
}

fn zzz() {()}