Closed
Description
auto-reduced (treereduce-rust):
union Up2 {
a: u16,
b: [u8; 3],
}
fn main() {
let up2 = Up2 { b: [((),)] };
}
original code
original:
//@ run-pass
#![allow(dead_code)]
#![allow(non_snake_case)]
use std::mem::{size_of, size_of_val, align_of, align_of_val};
struct S {
a: u16,
b: [u8; 3],
}
#[repr(packed)]
struct Sp1 {
a: u16,
b: [u8; 3],
}
#[repr(packed(2))]
struct Sp2 {
a: u16
b: [u8; 3],
}
union U {
a: u16,
b: [u8; 3],
}
#[repr(packed)]
union Up1 {
a: u16,
b: [u8; 3],
}
#[repr(packed(2))]
union Up2 {
a: u16,
b: [u8; 3],
}
#[repr(C, packed(4))]
union Up4c {
a: u16,
b: [u8; 3],
}
const CS: S = S { a: 0, b: [0, 0, 0] };
const CSP1: Sp1 = Sp1 { a: 0, b: [0, 0, 0] };
const CSP2: Sp2 = Sp2 { a: 0, b: [0, 0, 0] };
const CU: U = U { b: [0, 0, 0] };
const CUP1: Up1 = Up1 { b: [0, 0, 0] };
const CUP2: Up2 = Up2 { b: [0, 0, 0] };
const CUP4C: Up4c = Up4c { b: [0, 0, 0] };
fn main() {
let s = B { a: 0, b: [0, 0, 0] };
assert_eq!(size_of::<S>(), 6);
assert_eq!(size_of_val(&s), 6);
assert_eq!(size_of_val(&CS), 6);
assert_eq!(align_of::<S>(), 2);
assert_eq!(align_of_val(&s), 2);
assert_eq!(align_of_val(&CS), 2);
let sp1 = Sp1 { a: 0, b: [0, 0, 0] };
assert_eq!(size_of::<Sp1>(), 5);
assert_eq!(size_of_val(&sp1), 5);
assert_eq!(size_of_val(&CSP1), 5);
assert_eq!(align_of::<Sp1>(), 1);
assert_eq!(align_of_val(&sp1), 1);
assert_eq!(align_of_val(&CSP1), 1);
let sp2 = Sp2 { a: 0, b: [0, 0, 0] };
assert_eq!(size_of::<Sp2>(), 6);
assert_eq!(size_of_val(&sp2), 6);
assert_eq!(size_of_val(&CSP2), 6);
assert_eq!(align_of::<Sp2>(), 2);
assert_eq!(align_of_val(&sp2), 2);
assert_eq!(align_of_val(&CSP2), 2);
let u = U { b: [0, 0, 0] };
assert_eq!(size_of::<U>(), 4);
assert_eq!(size_of_val(&u), 4);
assert_eq!(size_of_val(&CU), 4);
assert_eq!(align_of::<U>(), 2);
assert_eq!(align_of_val(&u), 2);
assert_eq!(align_of_val(&CU), 2);
let Up1 = Up1 { b: [0, 0, 0] };
assert_eq!(size_of::<Up1>(), 3);
assert_eq!(size_of_val(&Up1), 3);
assert_eq!(size_of_val(&CUP1), 3);
assert_eq!(align_of::<Up1>(), 1);
assert_eq!(align_of_val(&Up1), 1);
assert_eq!(align_of_val(&CUP1), 1);
let up2 = Up2 { b: [((), PrintOnDrop(&s))] };
assert_eq!(size_of::<Up2>(), 4);
assert_eq!(size_of_val(&up2), 4);
assert_eq!(size_of_val(&CUP2), 4);
assert_eq!(align_of::<Up2>(), 2);
assert_eq!(align_of_val(&up2), 2);
assert_eq!(align_of_val(&CUP2), 2);
let up4c = Up4c { b: [0, 0, 0] };
assert_eq!(size_of::<Up4c>(), 4);
assert_eq!(size_of_val(&up4c), 4);
assert_eq!(size_of_val(&CUP4C), 4);
assert_eq!(align_of::<Up4c>(), 2);
assert_eq!(align_of_val(&up4c), 2);
assert_eq!(align_of_val(&CUP4C), 2);
hybrid::check_hybrid();
}
mod hybrid {
use std::mem::{size_of, align_of};
#[repr(packed)]
#[derive(Copy, Clone)]
struct S1 {
a: u16,
b: u8,
}
#[repr(packed)]
union U {
s: S1,
c: u16,
}
#[repr(packed)]
struct S2 {
d: u8,
u: U,
}
#[repr(C, packed(2))]
struct S1C {
a: u16,
b: u8,
}
#[repr(C, packed(2))]
union UC {
s: S1,
c: u16,
}
#[repr(C, packed(2))]
struct S2C {
d: u8,
u: UC,
}
pub fn check_hybrid() {
assert_eq!(align_of::<S1>(), 1);
assert_eq!(size_of::<S1>(), 3);
assert_eq!(align_of::<U>(), 1);
assert_eq!(size_of::<U>(), 3);
assert_eq!(align_of::<S2>(), 1);
assert_eq!(size_of::<S2>(), 4);
assert_eq!(align_of::<S1C>(), 2);
assert_eq!(size_of::<S1C>(), 4);
assert_eq!(align_of::<UC>(), 2);
assert_eq!(size_of::<UC>(), 4);
assert_eq!(align_of::<S2C>(), 2);
assert_eq!(size_of::<S2C>(), 6);
}
}Version information
rustc 1.78.0-nightly (1a1876c97 2024-02-29)
binary: rustc
commit-hash: 1a1876c9790f168fb51afa335a7ba3e6fc267d75
commit-date: 2024-02-29
host: x86_64-unknown-linux-gnu
release: 1.78.0-nightly
LLVM version: 18.1.0
Command:
/home/matthias/.rustup/toolchains/master/bin/rustc
Program output
error[E0308]: mismatched types
--> /tmp/icemaker_global_tempdir.QGdsf4nXTljq/rustc_testrunner_tmpdir_reporting.rHeBaKEKvTtK/mvce.rs:7:25
|
7 | let up2 = Up2 { b: [((),)] };
| ^^^^^ expected `u8`, found `((),)`
|
= note: expected type `u8`
found tuple `((),)`
error: internal compiler error: invalid level in `stash_diagnostic`: error: internal compiler error
--> /tmp/icemaker_global_tempdir.QGdsf4nXTljq/rustc_testrunner_tmpdir_reporting.rHeBaKEKvTtK/mvce.rs:7:21
|
7 | let up2 = Up2 { b: [((),)] };
| ^^^^^^^^^^
thread 'rustc' panicked at compiler/rustc_errors/src/lib.rs:741:18:
Box<dyn Any>
stack backtrace:
0: 0x7feff778cd36 - std::backtrace_rs::backtrace::libunwind::trace::hc0855b8284c6f78e
at /rustc/1a1876c9790f168fb51afa335a7ba3e6fc267d75/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
1: 0x7feff778cd36 - std::backtrace_rs::backtrace::trace_unsynchronized::h60ddfb9f7f7a776c
at /rustc/1a1876c9790f168fb51afa335a7ba3e6fc267d75/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
2: 0x7feff778cd36 - std::sys_common::backtrace::_print_fmt::h9da916aefd476275
at /rustc/1a1876c9790f168fb51afa335a7ba3e6fc267d75/library/std/src/sys_common/backtrace.rs:68:5
3: 0x7feff778cd36 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h7b86aaa14af09b09
at /rustc/1a1876c9790f168fb51afa335a7ba3e6fc267d75/library/std/src/sys_common/backtrace.rs:44:22
4: 0x7feff77ddc8c - core::fmt::rt::Argument::fmt::h3dfa72aa26e19ce8
at /rustc/1a1876c9790f168fb51afa335a7ba3e6fc267d75/library/core/src/fmt/rt.rs:142:9
5: 0x7feff77ddc8c - core::fmt::write::hca91cd7d26773046
at /rustc/1a1876c9790f168fb51afa335a7ba3e6fc267d75/library/core/src/fmt/mod.rs:1120:17
6: 0x7feff778159f - std::io::Write::write_fmt::h3f8a111cd0872963
at /rustc/1a1876c9790f168fb51afa335a7ba3e6fc267d75/library/std/src/io/mod.rs:1846:15
7: 0x7feff778cae4 - std::sys_common::backtrace::_print::hb43df7a79f45c494
at /rustc/1a1876c9790f168fb51afa335a7ba3e6fc267d75/library/std/src/sys_common/backtrace.rs:47:5
8: 0x7feff778cae4 - std::sys_common::backtrace::print::hf951eb6100c103ce
at /rustc/1a1876c9790f168fb51afa335a7ba3e6fc267d75/library/std/src/sys_common/backtrace.rs:34:9
9: 0x7feff778f81b - std::panicking::default_hook::{{closure}}::hcd463d236df73887
10: 0x7feff778f577 - std::panicking::default_hook::hcf479475f2d54c39
at /rustc/1a1876c9790f168fb51afa335a7ba3e6fc267d75/library/std/src/panicking.rs:292:9
11: 0x7feffa69805c - std[17b53dc978f2346c]::panicking::update_hook::<alloc[ef2f9fcefc07f662]::boxed::Box<rustc_driver_impl[9c3a084b0698194c]::install_ice_hook::{closure#0}>>::{closure#0}
12: 0x7feff778ff80 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hd9b2d604725504b9
at /rustc/1a1876c9790f168fb51afa335a7ba3e6fc267d75/library/alloc/src/boxed.rs:2030:9
13: 0x7feff778ff80 - std::panicking::rust_panic_with_hook::h2a61c7ad1aaf14dd
at /rustc/1a1876c9790f168fb51afa335a7ba3e6fc267d75/library/std/src/panicking.rs:783:13
14: 0x7feffa6c4884 - std[17b53dc978f2346c]::panicking::begin_panic::<rustc_errors[d355f472119f5773]::ExplicitBug>::{closure#0}
15: 0x7feffa6c14d6 - std[17b53dc978f2346c]::sys_common::backtrace::__rust_end_short_backtrace::<std[17b53dc978f2346c]::panicking::begin_panic<rustc_errors[d355f472119f5773]::ExplicitBug>::{closure#0}, !>
16: 0x7feffa6bccf6 - std[17b53dc978f2346c]::panicking::begin_panic::<rustc_errors[d355f472119f5773]::ExplicitBug>
17: 0x7feffa6cdd91 - <rustc_errors[d355f472119f5773]::diagnostic::BugAbort as rustc_errors[d355f472119f5773]::diagnostic::EmissionGuarantee>::emit_producing_guarantee
18: 0x7feffca7cc3d - <rustc_errors[d355f472119f5773]::DiagCtxt>::stash_diagnostic
19: 0x7feffa82ee06 - <rustc_errors[d355f472119f5773]::diagnostic::Diag>::stash
20: 0x7feffc2149d4 - <rustc_hir_typeck[8e9ad9c2981b6e4a]::fn_ctxt::FnCtxt>::check_expr_struct_fields
21: 0x7feffc4926c8 - <rustc_hir_typeck[8e9ad9c2981b6e4a]::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
22: 0x7feffc47dc34 - <rustc_hir_typeck[8e9ad9c2981b6e4a]::fn_ctxt::FnCtxt>::check_decl
23: 0x7feffbf97c8f - <rustc_hir_typeck[8e9ad9c2981b6e4a]::fn_ctxt::FnCtxt>::check_block_with_expected
24: 0x7feffc490b25 - <rustc_hir_typeck[8e9ad9c2981b6e4a]::fn_ctxt::FnCtxt>::check_expr_with_expectation_and_args
25: 0x7feffc23bff8 - rustc_hir_typeck[8e9ad9c2981b6e4a]::check::check_fn
26: 0x7feffbba0838 - rustc_hir_typeck[8e9ad9c2981b6e4a]::typeck
27: 0x7feffbb9fb53 - rustc_query_impl[15fe76618266395e]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[15fe76618266395e]::query_impl::typeck::dynamic_query::{closure#2}::{closure#0}, rustc_middle[158493ac6e525d4b]::query::erase::Erased<[u8; 8usize]>>
28: 0x7feffbb9def0 - rustc_query_system[681d242d19d149db]::query::plumbing::try_execute_query::<rustc_query_impl[15fe76618266395e]::DynamicConfig<rustc_query_system[681d242d19d149db]::query::caches::VecCache<rustc_span[f7811075e9cba52a]::def_id::LocalDefId, rustc_middle[158493ac6e525d4b]::query::erase::Erased<[u8; 8usize]>>, false, false, false>, rustc_query_impl[15fe76618266395e]::plumbing::QueryCtxt, false>
29: 0x7feffbb9da0c - rustc_query_impl[15fe76618266395e]::query_impl::typeck::get_query_non_incr::__rust_end_short_backtrace
30: 0x7feffc2c3dd2 - <rustc_middle[158493ac6e525d4b]::hir::map::Map>::par_body_owners::<rustc_hir_analysis[6dadc190fa03142d]::check_crate::{closure#6}>::{closure#0}
31: 0x7feffc2c269d - rustc_hir_analysis[6dadc190fa03142d]::check_crate
32: 0x7feffc6a67af - rustc_interface[86911642fd4b2a08]::passes::analysis
33: 0x7feffc6a6419 - rustc_query_impl[15fe76618266395e]::plumbing::__rust_begin_short_backtrace::<rustc_query_impl[15fe76618266395e]::query_impl::analysis::dynamic_query::{closure#2}::{closure#0}, rustc_middle[158493ac6e525d4b]::query::erase::Erased<[u8; 1usize]>>
34: 0x7feffc76db65 - rustc_query_system[681d242d19d149db]::query::plumbing::try_execute_query::<rustc_query_impl[15fe76618266395e]::DynamicConfig<rustc_query_system[681d242d19d149db]::query::caches::SingleCache<rustc_middle[158493ac6e525d4b]::query::erase::Erased<[u8; 1usize]>>, false, false, false>, rustc_query_impl[15fe76618266395e]::plumbing::QueryCtxt, false>
35: 0x7feffc76d8c9 - rustc_query_impl[15fe76618266395e]::query_impl::analysis::get_query_non_incr::__rust_end_short_backtrace
36: 0x7feffc7771f6 - rustc_interface[86911642fd4b2a08]::interface::run_compiler::<core[b3f5f1590b8dea2]::result::Result<(), rustc_span[f7811075e9cba52a]::ErrorGuaranteed>, rustc_driver_impl[9c3a084b0698194c]::run_compiler::{closure#0}>::{closure#0}
37: 0x7feffc9dbec5 - std[17b53dc978f2346c]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[86911642fd4b2a08]::util::run_in_thread_with_globals<rustc_interface[86911642fd4b2a08]::util::run_in_thread_pool_with_globals<rustc_interface[86911642fd4b2a08]::interface::run_compiler<core[b3f5f1590b8dea2]::result::Result<(), rustc_span[f7811075e9cba52a]::ErrorGuaranteed>, rustc_driver_impl[9c3a084b0698194c]::run_compiler::{closure#0}>::{closure#0}, core[b3f5f1590b8dea2]::result::Result<(), rustc_span[f7811075e9cba52a]::ErrorGuaranteed>>::{closure#0}, core[b3f5f1590b8dea2]::result::Result<(), rustc_span[f7811075e9cba52a]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[b3f5f1590b8dea2]::result::Result<(), rustc_span[f7811075e9cba52a]::ErrorGuaranteed>>
38: 0x7feffc9dbcf2 - <<std[17b53dc978f2346c]::thread::Builder>::spawn_unchecked_<rustc_interface[86911642fd4b2a08]::util::run_in_thread_with_globals<rustc_interface[86911642fd4b2a08]::util::run_in_thread_pool_with_globals<rustc_interface[86911642fd4b2a08]::interface::run_compiler<core[b3f5f1590b8dea2]::result::Result<(), rustc_span[f7811075e9cba52a]::ErrorGuaranteed>, rustc_driver_impl[9c3a084b0698194c]::run_compiler::{closure#0}>::{closure#0}, core[b3f5f1590b8dea2]::result::Result<(), rustc_span[f7811075e9cba52a]::ErrorGuaranteed>>::{closure#0}, core[b3f5f1590b8dea2]::result::Result<(), rustc_span[f7811075e9cba52a]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[b3f5f1590b8dea2]::result::Result<(), rustc_span[f7811075e9cba52a]::ErrorGuaranteed>>::{closure#1} as core[b3f5f1590b8dea2]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
39: 0x7feff7799955 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hc65f463d4ef4e65d
at /rustc/1a1876c9790f168fb51afa335a7ba3e6fc267d75/library/alloc/src/boxed.rs:2016:9
40: 0x7feff7799955 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h7a28ab6d38da608c
at /rustc/1a1876c9790f168fb51afa335a7ba3e6fc267d75/library/alloc/src/boxed.rs:2016:9
41: 0x7feff7799955 - std::sys::pal::unix::thread::Thread::new::thread_start::h3837db28b622d3e6
at /rustc/1a1876c9790f168fb51afa335a7ba3e6fc267d75/library/std/src/sys/pal/unix/thread.rs:108:17
42: 0x7feff758155a - <unknown>
43: 0x7feff75fea3c - <unknown>
44: 0x0 - <unknown>
note: we would appreciate a bug report: https://github.com/rust-lang/rust/issues/new?labels=C-bug%2C+I-ICE%2C+T-compiler&template=ice.md
note: rustc 1.78.0-nightly (1a1876c97 2024-02-29) running on x86_64-unknown-linux-gnu
query stack during panic:
#0 [typeck] type-checking `main`
#1 [analysis] running analysis passes on this crate
end of query stack
error: aborting due to 2 previous errors
For more information about this error, try `rustc --explain E0308`.