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20 hours ago •
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rust-lang
ice: `failed: failed in format_file visitor.buffer`
!!! REQUIRES DEBUG ASSERTIONS !!!
#[no_mangle]
static FOO: () = ();
fn main() {
extern "fail
" {
fn FOO();
}
unsafe { FOO() } //~ ERROR: attempt to call an exported symbol that is not defined as a function
}
thread 'main' panicked at /home/matthias/vcs/github/rust_debug_assertions/src/tools/rustfmt/src/formatting.rs:227:9:
assertion `left == right` failed: failed in format_file visitor.buffer:
"#[no_mangle]\nstatic FOO: () = ();\n\nfn main() {\n extern \"fail\n\" {\n fn FOO();\n }\n unsafe { FOO() } //~ ERROR: attempt to call an exported symbol that is not defined as a function\n}\n"
left: 9
right: 10
stack backtrace:
0: 0x7fd18dd7ca5d - std::backtrace_rs::backtrace::libunwind::trace::hb28aaf5f3549701f
at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
1: 0x7fd18dd7ca5d - std::backtrace_rs::backtrace::trace_unsynchronized::he4f17ec88b61fea5
at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
2: 0x7fd18dd7ca5d - std::sys_common::backtrace::_print_fmt::h5a82a3e85aa2fae5
at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/sys_common/backtrace.rs:68:5
3: 0x7fd18dd7ca5d - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hb03764486a25b659
at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/sys_common/backtrace.rs:44:22
4: 0x7fd18ddc55cf - core::fmt::rt::Argument::fmt::h67bfbe6caf20ecda
at /home/matthias/vcs/github/rust_debug_assertions/library/core/src/fmt/rt.rs:142:9
5: 0x7fd18ddc55cf - core::fmt::write::h2b3e0bd86bdfc209
at /home/matthias/vcs/github/rust_debug_assertions/library/core/src/fmt/mod.rs:1120:17
6: 0x7fd18dd64285 - std::io::Write::write_fmt::hcf7284dad3d07738
at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/io/mod.rs:1854:15
7: 0x7fd18dd7c824 - std::sys_common::backtrace::_print::h1988031c6b9fcf4a
at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/sys_common/backtrace.rs:47:5
8: 0x7fd18dd7c824 - std::sys_common::backtrace::print::h81809c76434159ce
at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/sys_common/backtrace.rs:34:9
9: 0x7fd18dd4022c - std::panicking::default_hook::{{closure}}::he3de9259d121bac5
10: 0x7fd18dd3ff00 - std::panicking::default_hook::hcde334a568bf04a2
at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/panicking.rs:292:9
11: 0x7fd1908ffe47 - rustc_driver_impl[8889ac64fe77a2fe]::install_ice_hook::{closure#0}
at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_driver_impl/src/lib.rs:1340:17
12: 0x7fd1908ffe47 - <alloc[3b5cf733b6b27210]::boxed::Box<rustc_driver_impl[8889ac64fe77a2fe]::install_ice_hook::{closure#0}> as core[aa444211b5f41879]::ops::function::Fn<(&dyn for<'a, 'b> core[aa444211b5f41879]::ops::function::Fn<(&'a core[aa444211b5f41879]::panic::panic_info::PanicInfo<'b>,), Output = ()> + core[aa444211b5f41879]::marker::Sync + core[aa444211b5f41879]::marker::Send, &core[aa444211b5f41879]::panic::panic_info::PanicInfo)>>::call
at /home/matthias/vcs/github/rust_debug_assertions/library/alloc/src/boxed.rs:2029:9
13: 0x7fd18dd40ae3 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h65cf345775a09bb6
at /home/matthias/vcs/github/rust_debug_assertions/library/alloc/src/boxed.rs:2029:9
14: 0x7fd18dd40ae3 - std::panicking::rust_panic_with_hook::hb041b1849b056e6a
at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/panicking.rs:785:13
15: 0x7fd18dd7cf1a - std::panicking::begin_panic_handler::{{closure}}::hae61001f490e889a
at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/panicking.rs:659:13
16: 0x7fd18dd7cd26 - std::sys_common::backtrace::__rust_end_short_backtrace::h07aab78c7d5e7b18
at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/sys_common/backtrace.rs:171:18
17: 0x7fd18dd40654 - rust_begin_unwind
at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/panicking.rs:647:5
18: 0x7fd18dddf965 - core::panicking::panic_fmt::h7cdaca6ac7987f65
at /home/matthias/vcs/github/rust_debug_assertions/library/core/src/panicking.rs:72:14
19: 0x7fd18dde0019 - core::panicking::assert_failed_inner::heed625da7882381e
at /home/matthias/vcs/github/rust_debug_assertions/library/core/src/panicking.rs:337:23
20: 0x55a6e03f112f - core[aa444211b5f41879]::panicking::assert_failed::<usize, usize>
at /home/matthias/vcs/github/rust_debug_assertions/library/core/src/panicking.rs:297:5
21: 0x55a6e03f2227 - <rustfmt_nightly[fe4bb6d079290361]::formatting::FormatContext<rustfmt_nightly[fe4bb6d079290361]::Session<std[1ba472e493b6ecda]::io::stdio::Stdout>>>::format_file
at /home/matthias/vcs/github/rust_debug_assertions/src/tools/rustfmt/src/formatting.rs:227:9
22: 0x55a6e03f2227 - rustfmt_nightly[fe4bb6d079290361]::formatting::format_project::<rustfmt_nightly[fe4bb6d079290361]::Session<std[1ba472e493b6ecda]::io::stdio::Stdout>>
at /home/matthias/vcs/github/rust_debug_assertions/src/tools/rustfmt/src/formatting.rs:162:9
23: 0x55a6e03e0955 - <rustfmt_nightly[fe4bb6d079290361]::Session<std[1ba472e493b6ecda]::io::stdio::Stdout>>::format_input_inner::{closure#0}
at /home/matthias/vcs/github/rust_debug_assertions/src/tools/rustfmt/src/formatting.rs:48:33
24: 0x55a6e03e0955 - <scoped_tls[af7c8664e9f149d3]::ScopedKey<rustc_span[9066a7c1991c4c44]::SessionGlobals>>::with::<<rustfmt_nightly[fe4bb6d079290361]::Session<std[1ba472e493b6ecda]::io::stdio::Stdout>>::format_input_inner::{closure#0}, core[aa444211b5f41879]::result::Result<rustfmt_nightly[fe4bb6d079290361]::FormatReport, rustfmt_nightly[fe4bb6d079290361]::ErrorKind>>
at /home/matthias/.cargo/registry/src/index.crates.io-6f17d22bba15001f/scoped-tls-1.0.1/src/lib.rs:171:13
25: 0x55a6e03ddf74 - rustc_span[9066a7c1991c4c44]::create_session_if_not_set_then::<core[aa444211b5f41879]::result::Result<rustfmt_nightly[fe4bb6d079290361]::FormatReport, rustfmt_nightly[fe4bb6d079290361]::ErrorKind>, <rustfmt_nightly[fe4bb6d079290361]::Session<std[1ba472e493b6ecda]::io::stdio::Stdout>>::format_input_inner::{closure#0}>::{closure#0}
at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_span/src/lib.rs:151:50
26: 0x55a6e03ddf74 - <scoped_tls[af7c8664e9f149d3]::ScopedKey<rustc_span[9066a7c1991c4c44]::SessionGlobals>>::set::<rustc_span[9066a7c1991c4c44]::create_session_if_not_set_then<core[aa444211b5f41879]::result::Result<rustfmt_nightly[fe4bb6d079290361]::FormatReport, rustfmt_nightly[fe4bb6d079290361]::ErrorKind>, <rustfmt_nightly[fe4bb6d079290361]::Session<std[1ba472e493b6ecda]::io::stdio::Stdout>>::format_input_inner::{closure#0}>::{closure#0}, core[aa444211b5f41879]::result::Result<rustfmt_nightly[fe4bb6d079290361]::FormatReport, rustfmt_nightly[fe4bb6d079290361]::ErrorKind>>
at /home/matthias/.cargo/registry/src/index.crates.io-6f17d22bba15001f/scoped-tls-1.0.1/src/lib.rs:137:9
27: 0x55a6e03ec8af - rustc_span[9066a7c1991c4c44]::create_session_if_not_set_then::<core[aa444211b5f41879]::result::Result<rustfmt_nightly[fe4bb6d079290361]::FormatReport, rustfmt_nightly[fe4bb6d079290361]::ErrorKind>, <rustfmt_nightly[fe4bb6d079290361]::Session<std[1ba472e493b6ecda]::io::stdio::Stdout>>::format_input_inner::{closure#0}>
at /home/matthias/vcs/github/rust_debug_assertions/compiler/rustc_span/src/lib.rs:151:9
28: 0x55a6e03e14c9 - <rustfmt_nightly[fe4bb6d079290361]::Session<std[1ba472e493b6ecda]::io::stdio::Stdout>>::format_input_inner
at /home/matthias/vcs/github/rust_debug_assertions/src/tools/rustfmt/src/formatting.rs:38:9
29: 0x55a6e03cec97 - <rustfmt_nightly[fe4bb6d079290361]::Session<std[1ba472e493b6ecda]::io::stdio::Stdout>>::format
at /home/matthias/vcs/github/rust_debug_assertions/src/tools/rustfmt/src/lib.rs:465:9
30: 0x55a6e03cec97 - rustfmt[9b0bb1331446777d]::format_and_emit_report::<std[1ba472e493b6ecda]::io::stdio::Stdout>
at /home/matthias/vcs/github/rust_debug_assertions/src/tools/rustfmt/src/bin/main.rs:371:19
31: 0x55a6e03ddb76 - rustfmt[9b0bb1331446777d]::format::{closure#0}
at /home/matthias/vcs/github/rust_debug_assertions/src/tools/rustfmt/src/bin/main.rs:343:21
32: 0x55a6e03ddb76 - <rustfmt_nightly[fe4bb6d079290361]::Session<std[1ba472e493b6ecda]::io::stdio::Stdout>>::override_config::<rustfmt[9b0bb1331446777d]::format::{closure#0}, ()>
at /home/matthias/vcs/github/rust_debug_assertions/src/tools/rustfmt/src/lib.rs:473:22
33: 0x55a6e03cda17 - rustfmt[9b0bb1331446777d]::format
at /home/matthias/vcs/github/rust_debug_assertions/src/tools/rustfmt/src/bin/main.rs:342:17
34: 0x55a6e03cda17 - rustfmt[9b0bb1331446777d]::execute
at /home/matthias/vcs/github/rust_debug_assertions/src/tools/rustfmt/src/bin/main.rs:257:14
35: 0x55a6e03cb01a - rustfmt[9b0bb1331446777d]::main
at /home/matthias/vcs/github/rust_debug_assertions/src/tools/rustfmt/src/bin/main.rs:38:27
36: 0x55a6e03e2dd3 - <fn() as core[aa444211b5f41879]::ops::function::FnOnce<()>>::call_once
at /home/matthias/vcs/github/rust_debug_assertions/library/core/src/ops/function.rs:250:5
37: 0x55a6e03e2dd3 - std[1ba472e493b6ecda]::sys_common::backtrace::__rust_begin_short_backtrace::<fn(), ()>
at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/sys_common/backtrace.rs:155:18
38: 0x55a6e03ee189 - std[1ba472e493b6ecda]::rt::lang_start::<()>::{closure#0}
at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/rt.rs:166:18
39: 0x7fd18dd402c7 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h297db2377758e0cf
at /home/matthias/vcs/github/rust_debug_assertions/library/core/src/ops/function.rs:284:13
40: 0x7fd18dd402c7 - std::panicking::try::do_call::hae59afb433bdb921
at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/panicking.rs:554:40
41: 0x7fd18dd402c7 - std::panicking::try::h35e373fc7666cc2e
at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/panicking.rs:518:19
42: 0x7fd18dd402c7 - std::panic::catch_unwind::h46e79a28bdb63479
at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/panic.rs:142:14
43: 0x7fd18dd402c7 - std::rt::lang_start_internal::{{closure}}::hf3e58066b1096274
at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/rt.rs:148:48
44: 0x7fd18dd402c7 - std::panicking::try::do_call::h100385e03aa55f9a
at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/panicking.rs:554:40
45: 0x7fd18dd402c7 - std::panicking::try::h89b6326347797a0c
at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/panicking.rs:518:19
46: 0x7fd18dd54ddb - std::panic::catch_unwind::h230c430ad70c1500
at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/panic.rs:142:14
47: 0x7fd18dd54ddb - std::rt::lang_start_internal::h2a6bfb497173e897
at /home/matthias/vcs/github/rust_debug_assertions/library/std/src/rt.rs:148:20
48: 0x55a6e03cf8bc - main
49: 0x7fd18dabacd0 - <unknown>
50: 0x7fd18dabad8a - __libc_start_main
51: 0x55a6e03b1cd5 - _start
52: 0x0 - <unknown>
error: the compiler unexpectedly panicked. this is a bug.
note: we would appreciate a bug report: https://github.com/rust-lang/rustfmt/issues/new?labels=bug
note: please attach the file at `/tmp/im/rustc-ice-2024-02-07T19_30_52-3961474.txt` to your bug report
query stack during panic:
end of query stack
!!! REQUIRES DEBUG ASSERTIONS !!!
@matthiaskrgr what version of rustfmt were you using and how can this be reproduced?
I bootstrap my own rustc toolchain (from git repo) with debug assertions and use the resulting rustfmt binary :sweat_smile:
commit of the rustc tree was d6c46a23ce19e910225abacc33bcca9d0f549148
Thanks for the info! I haven't had a chance to see why this is failing, but for now here's the location of where the issue is:
https://github.com/rust-lang/rustfmt/blob/ead0fc9529ef787bc0e3f7f1b92dccd00cf45915/src/formatting.rs#L227-L232