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Overhaul Diagnostic and DiagnosticBuilder #120576

Merged
merged 2 commits into from
Feb 20, 2024
Merged

Overhaul Diagnostic and DiagnosticBuilder #120576

merged 2 commits into from
Feb 20, 2024

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nnethercote
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@nnethercote nnethercote commented Feb 2, 2024 •
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Implements the first part of rust-lang/compiler-team#722, which moves functionality and use away from Diagnostic, onto DiagnosticBuilder.

Likely follow-ups:

  • Move things around, because this PR was written to minimize diff size, so some things end up in sub-optimal places. E.g. DiagnosticBuilder has impls in both diagnostic.rs and diagnostic_builder.rs.
  • Rename Diagnostic as DiagInner and DiagnosticBuilder as Diag.

r? @davidtwco

@rustbot rustbot added A-translation Area: Translation infrastructure, and migrating existing diagnostics to SessionDiagnostic S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Feb 2, 2024
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rustbot commented Feb 2, 2024

rustc_macros::diagnostics was changed

cc @davidtwco, @compiler-errors, @TaKO8Ki

Some changes might have occurred in exhaustiveness checking

cc @Nadrieril

Some changes occurred in src/tools/clippy

cc @rust-lang/clippy

@rustbot rustbot added T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. T-rustdoc Relevant to the rustdoc team, which will review and decide on the PR/issue. labels Feb 2, 2024
@nnethercote nnethercote marked this pull request as draft February 2, 2024 06:51
@nnethercote nnethercote changed the title Merge diagnostic diagnostic builder Overhaul Diagnostic and DiagnosticBuilder Feb 2, 2024
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@nnethercote nnethercote force-pushed the merge-Diagnostic-DiagnosticBuilder branch from a9e8c80 to 76be22d Compare February 6, 2024 09:26
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@nnethercote nnethercote force-pushed the merge-Diagnostic-DiagnosticBuilder branch from 76be22d to 008e4b8 Compare February 6, 2024 10:27
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@nnethercote nnethercote force-pushed the merge-Diagnostic-DiagnosticBuilder branch from 008e4b8 to bbdf6fd Compare February 6, 2024 21:28
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@nnethercote nnethercote force-pushed the merge-Diagnostic-DiagnosticBuilder branch 2 times, most recently from 1cc4994 to 90f2b64 Compare February 6, 2024 22:23
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@nnethercote nnethercote force-pushed the merge-Diagnostic-DiagnosticBuilder branch 2 times, most recently from d4ae95d to 18e2e92 Compare February 7, 2024 06:28
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@fmease fmease mentioned this pull request Feb 7, 2024
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@nnethercote nnethercote force-pushed the merge-Diagnostic-DiagnosticBuilder branch from 18e2e92 to 40fb7d5 Compare February 8, 2024 03:16
@nnethercote nnethercote marked this pull request as ready for review February 8, 2024 03:19
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rustbot commented Feb 8, 2024

Some changes occurred to MIR optimizations

cc @rust-lang/wg-mir-opt

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@bors try

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bors commented Feb 8, 2024

⌛ Trying commit 40fb7d5 with merge dcb3508...

bors added a commit to rust-lang-ci/rust that referenced this pull request Feb 8, 2024
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Auto merge of rust-lang#120576 - nnethercote:merge-Diagnostic-Diagnos…
dcb3508 
…ticBuilder, r=<try>

Overhaul `Diagnostic` and `DiagnosticBuilder`

Implements the first part of rust-lang/compiler-team#722, which moves functionality and use away from `Diagnostic`, onto `DiagnosticBuilder`.

Likely follow-ups:
- Move things around, because this PR was written to minimize diff size, so some things end up in sub-optimal places. E.g. `DiagnosticBuilder` has impls in both `diagnostic.rs` and `diagnostic_builder.rs`.
- Rename `Diagnostic` as `DiagInner` and `DiagnosticBuilder` as `Diag`.

r? `@ghost`
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bors commented Feb 8, 2024

☀️ Try build successful - checks-actions
Build commit: dcb3508 (dcb3508f801971ecd3d274efc644c3f4229af03c)

@nnethercote nnethercote force-pushed the merge-Diagnostic-DiagnosticBuilder branch from 40fb7d5 to 670cb07 Compare February 12, 2024 21:21
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bors commented Feb 20, 2024

📌 Commit f6f8779 has been approved by davidtwco

It is now in the queue for this repository.

@bors bors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Feb 20, 2024
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bors commented Feb 20, 2024

⌛ Testing commit f6f8779 with merge 29f87ad...

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bors commented Feb 20, 2024

☀️ Test successful - checks-actions
Approved by: davidtwco
Pushing 29f87ad to master...

@bors bors added the merged-by-bors This PR was explicitly merged by bors. label Feb 20, 2024
@bors bors merged commit 29f87ad into rust-lang:master Feb 20, 2024
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@rustbot rustbot added this to the 1.78.0 milestone Feb 20, 2024
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Finished benchmarking commit (29f87ad): comparison URL.

Overall result: ✅ improvements - no action needed

@rustbot label: -perf-regression

Instruction count

This is a highly reliable metric that was used to determine the overall result at the top of this comment.

mean range count
Regressions ❌
(primary)		 - - 0
Regressions ❌
(secondary)		 - - 0
Improvements ✅
(primary)		 -0.3% [-0.3%, -0.3%] 1
Improvements ✅
(secondary)		 -3.6% [-5.2%, -1.9%] 2
All ❌✅ (primary) -0.3% [-0.3%, -0.3%] 1

Max RSS (memory usage)

Results

This is a less reliable metric that may be of interest but was not used to determine the overall result at the top of this comment.

mean range count
Regressions ❌
(primary)		 2.1% [2.1%, 2.1%] 1
Regressions ❌
(secondary)		 3.1% [3.0%, 3.2%] 2
Improvements ✅
(primary)		 - - 0
Improvements ✅
(secondary)		 -1.6% [-3.7%, -0.8%] 4
All ❌✅ (primary) 2.1% [2.1%, 2.1%] 1

Cycles

Results

This is a less reliable metric that may be of interest but was not used to determine the overall result at the top of this comment.

mean range count
Regressions ❌
(primary)		 - - 0
Regressions ❌
(secondary)		 - - 0
Improvements ✅
(primary)		 - - 0
Improvements ✅
(secondary)		 -3.3% [-3.7%, -2.9%] 2
All ❌✅ (primary) - - 0

Binary size

This benchmark run did not return any relevant results for this metric.

Bootstrap: 639.567s -> 640.822s (0.20%)
Artifact size: 310.63 MiB -> 308.66 MiB (-0.63%)

@nnethercote nnethercote deleted the merge-Diagnostic-DiagnosticBuilder branch February 20, 2024 21:10
@nnethercote nnethercote mentioned this pull request Feb 20, 2024
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fmease added a commit to fmease/rust that referenced this pull request Feb 21, 2024
@fmease
Rollup merge of rust-lang#121366 - nnethercote:rm-diagnostic_builder.…
ef14c17 
…rs, r=compiler-errors

Remove `diagnostic_builder.rs`

rust-lang#120576 moved a big chunk of `DiagnosticBuilder`'s functionality out of `diagnostic_builder.rs` into `diagnostic.rs`, which left `DiagnosticBuilder` spread across the two files.

This PR fixes that messiness by merging what remains of `diagnostic_builder.rs` into `diagnostic.rs`.

This is part of rust-lang/compiler-team#722.

r? `@davidtwco`
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I believe this has broken Rocket on nightly. Here's the ICE:

thread 'rustc' panicked at compiler/rustc_errors/src/diagnostic_builder.rs:117:9:
invalid diagnostic level (Warning)
stack backtrace:
   0:     0x7ff40f98caf6 - std::backtrace_rs::backtrace::libunwind::trace::h1eedb42239d9af6b
                               at /rustc/bb594538fc6e84213a6b8d5e165442570aa48923/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
   1:     0x7ff40f98caf6 - std::backtrace_rs::backtrace::trace_unsynchronized::hf37e37075d32c152
                               at /rustc/bb594538fc6e84213a6b8d5e165442570aa48923/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7ff40f98caf6 - std::sys_common::backtrace::_print_fmt::h089ff4e21712e78d
                               at /rustc/bb594538fc6e84213a6b8d5e165442570aa48923/library/std/src/sys_common/backtrace.rs:68:5
   3:     0x7ff40f98caf6 - ::fmt::h249f2f40a85530bd
                               at /rustc/bb594538fc6e84213a6b8d5e165442570aa48923/library/std/src/sys_common/backtrace.rs:44:22
   4:     0x7ff40f9dda7c - core::fmt::rt::Argument::fmt::h0aeed2b676ebf5da
                               at /rustc/bb594538fc6e84213a6b8d5e165442570aa48923/library/core/src/fmt/rt.rs:142:9
   5:     0x7ff40f9dda7c - core::fmt::write::h25b3f5340152b6c4
                               at /rustc/bb594538fc6e84213a6b8d5e165442570aa48923/library/core/src/fmt/mod.rs:1120:17
   6:     0x7ff40f98142f - std::io::Write::write_fmt::h8746a81e0adfe285
                               at /rustc/bb594538fc6e84213a6b8d5e165442570aa48923/library/std/src/io/mod.rs:1846:15
   7:     0x7ff40f98c8a4 - std::sys_common::backtrace::_print::hcf22409f3667d346
                               at /rustc/bb594538fc6e84213a6b8d5e165442570aa48923/library/std/src/sys_common/backtrace.rs:47:5
   8:     0x7ff40f98c8a4 - std::sys_common::backtrace::print::h7d3fd33863df24d3
                               at /rustc/bb594538fc6e84213a6b8d5e165442570aa48923/library/std/src/sys_common/backtrace.rs:34:9
   9:     0x7ff40f98f5eb - std::panicking::default_hook::{{closure}}::h69f3f4f5b3bceec1
  10:     0x7ff40f98f339 - std::panicking::default_hook::hf73563d650f0e118
                               at /rustc/bb594538fc6e84213a6b8d5e165442570aa48923/library/std/src/panicking.rs:292:9
  11:     0x7ff41281a63c - std[38a2ac7f7aa65357]::panicking::update_hook::>::{closure#0}
  12:     0x7ff40f98fd50 -  as core::ops::function::Fn>::call::h0f1d4fd9cb21869d
                               at /rustc/bb594538fc6e84213a6b8d5e165442570aa48923/library/alloc/src/boxed.rs:2030:9
  13:     0x7ff40f98fd50 - std::panicking::rust_panic_with_hook::h55549baaf7aa2e9c
                               at /rustc/bb594538fc6e84213a6b8d5e165442570aa48923/library/std/src/panicking.rs:786:13
  14:     0x7ff40f98fa92 - std::panicking::begin_panic_handler::{{closure}}::ha0f2b022514542bd
                               at /rustc/bb594538fc6e84213a6b8d5e165442570aa48923/library/std/src/panicking.rs:660:13
  15:     0x7ff40f98cfd6 - std::sys_common::backtrace::__rust_end_short_backtrace::h710104fb518da581
                               at /rustc/bb594538fc6e84213a6b8d5e165442570aa48923/library/std/src/sys_common/backtrace.rs:171:18
  16:     0x7ff40f98f7c4 - rust_begin_unwind
                               at /rustc/bb594538fc6e84213a6b8d5e165442570aa48923/library/std/src/panicking.rs:648:5
  17:     0x7ff40f9d9f95 - core::panicking::panic_fmt::h98f81ca1314e2b14
                               at /rustc/bb594538fc6e84213a6b8d5e165442570aa48923/library/core/src/panicking.rs:72:14
  18:     0x7ff414aee592 - ::emit_producing_guarantee
  19:     0x7ff413f0b2a4 - > as proc_macro[478832a3ff351ddb]::bridge::server::DispatcherTrait>::dispatch
  20:     0x7ff413f08376 -  as core[9082f35584c4c405]::convert::From<&mut _>>::from::call::::run_bridge_and_client>>::{closure#0}>
  21:     0x7ff3ecde306f - proc_macro::bridge::closure::Closure::call::h98a90dd4c3bd18d9
                               at /rustc/bb594538fc6e84213a6b8d5e165442570aa48923/library/proc_macro/src/bridge/closure.rs:30:18
  22:     0x7ff3ecde306f - proc_macro::bridge::client::FreeFunctions::emit_diagnostic::{{closure}}::h02a3b7ffb0337edf
                               at /rustc/bb594538fc6e84213a6b8d5e165442570aa48923/library/proc_macro/src/bridge/client.rs:238:43
  23:     0x7ff3ecde306f - proc_macro::bridge::client::Bridge::with::{{closure}}::h4a7782b669169a4e
                               at /rustc/bb594538fc6e84213a6b8d5e165442570aa48923/library/proc_macro/src/bridge/client.rs:312:47
  24:     0x7ff3ecde306f - proc_macro::bridge::scoped_cell::ScopedCell::replace::h71fa0068b5643e5f
                               at /rustc/bb594538fc6e84213a6b8d5e165442570aa48923/library/proc_macro/src/bridge/scoped_cell.rs:56:9
  25:     0x7ff3ecde306f - proc_macro::bridge::client::BridgeState::with::{{closure}}::ha67dc0[569](https://github.com/rwf2/Rocket/actions/runs/7985532655/job/21804162579#step:11:570)336188c
                               at /rustc/bb594538fc6e84213a6b8d5e165442[570](https://github.com/rwf2/Rocket/actions/runs/7985532655/job/21804162579#step:11:571)aa48923/library/proc_macro/src/bridge/client.rs:299:35
  26:     0x7ff3ecde306f - std::thread::local::LocalKey::try_with::hf59b7c62c02da428
                               at /rustc/bb594538fc6e84213a6b8d5e165442570aa48923/library/std/src/thread/local.rs:286:16
  27:     0x7ff3ecde306f - std::thread::local::LocalKey::with::h4a285a6948869979
                               at /rustc/bb594538fc6e84213a6b8d5e165442570aa48923/library/std/src/thread/local.rs:262:9
  28:     0x7ff3ecde306f - proc_macro::bridge::client::BridgeState::with::h7efcfe9838a80494
                               at /rustc/bb594538fc6e84213a6b8d5e165442570aa48923/library/proc_macro/src/bridge/client.rs:299:22
  29:     0x7ff3ecde306f - proc_macro::bridge::client::Bridge::with::h1aa91c3ee1cfd06f
                               at /rustc/bb594538fc6e84213a6b8d5e165442570aa48923/library/proc_macro/src/bridge/client.rs:305:9
  30:     0x7ff3ecde306f - proc_macro::bridge::client::FreeFunctions::emit_diagnostic::h1e0a8325d6884b21
                               at /rustc/bb594538fc6e84213a6b8d5e165442570aa48923/library/proc_macro/src/bridge/client.rs:231:17
  31:     0x7ff3ecde306f - proc_macro::diagnostic::Diagnostic::emit::h4d32195130f72312
                               at /rustc/bb594538fc6e84213a6b8d5e165442570aa48923/library/proc_macro/src/diagnostic.rs:173:9
  32:     0x7ff3ecc0cb8c - proc_macro2_diagnostics::diagnostic::Diagnostic::emit_as_tokens::h7376933de7600d53
                               at /home/runner/.cargo/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-diagnostics-0.10.1/src/diagnostic.rs:185:9
  33:     0x7ff3ecc0cc7e - proc_macro2_diagnostics::diagnostic::Diagnostic::emit_as_item_tokens::hdefbf272558007fd
                               at /home/runner/.cargo/registry/src/index.crates.io-6f17d22bba15001f/proc-macro2-diagnostics-0.10.1/src/diagnostic.rs:193:9
  34:     0x7ff3ecafd3e6 - ::from_meta::h7686f3e587a6c6bc
  35:     0x7ff3ecb53efa -  as devise_core::from_meta::FromMeta>::from_meta::h0aab5359903e7f4d
  36:     0x7ff3ecb78556 - rocket_codegen::attribute::route::parse::_::::from_meta::h44442893fb49c605
  37:     0x7ff3ecb728a3 - rocket_codegen::attribute::route::incomplete_route::h71b825bdcb5b45d4
  38:     0x7ff3ecb7365c - rocket_codegen::attribute::route::route_attribute::hb228309f02baa254
  39:     0x7ff3ecaec0bf - rocket_codegen::put::h9ddfe8d1e9c1b876
  40:     0x7ff3ecadd7b4 - core::ops::function::Fn::call::hb0b2d304bd8ba2ba
  41:     0x7ff3eca86737 - proc_macro::bridge::client::Client<(proc_macro::TokenStream,proc_macro::TokenStream),proc_macro::TokenStream>::expand2::{{closure}}::{{closure}}::h939fd429ff3286cb
  42:     0x7ff3eca817da - proc_macro::bridge::client::run_client::{{closure}}::{{closure}}::{{closure}}::hd4e8941be918b5db
  43:     0x7ff3ecac33f5 - proc_macro::bridge::scoped_cell::ScopedCell::set::{{closure}}::hf03972e6461bce0f
  44:     0x7ff3ecac902e - proc_macro::bridge::scoped_cell::ScopedCell::replace::hce4c1096696e01bb
  45:     0x7ff3eca7f4a9 - proc_macro::bridge::client::run_client::{{closure}}::{{closure}}::h043cd408ee94a581
  46:     0x7ff3ecb03d7f - std::thread::local::LocalKey::try_with::h543e6d9cce3dc718
  47:     0x7ff3eca7e287 - proc_macro::bridge::client::run_client::{{closure}}::hced0a0af3245c14b
  48:     0x7ff3ecad50a0 -  as core::ops::function::FnOnce<()>>::call_once::h0bbe229a4e3be272
  49:     0x7ff3ecb0751c - std::panicking::try::do_call::hdeb2794ce764b7fd
  50:     0x7ff3ecb0fb9b - __rust_try
  51:     0x7ff3ecb069f2 - std::panicking::try::h52b9394acec22072
  52:     0x7ff3eca788da - proc_macro::bridge::client::run_client::h8d2ee80dfdd540c0
  53:     0x7ff3eca86396 - proc_macro::bridge::client::Client<(proc_macro::TokenStream,proc_macro::TokenStream),proc_macro::TokenStream>::expand2::{{closure}}::h6a7d2511[574](https://github.com/rwf2/Rocket/actions/runs/7985532655/job/21804162579#step:11:575)dcc92
  54:     0x7ff3ecb01304 - proc_macro::bridge::selfless_reify::reify_to_extern_c_fn_hrt_bridge::wrapper::h917564c63114f6bb
  55:     0x7ff4142f976b - > as proc_macro[478832a3ff351ddb]::bridge::server::ExecutionStrategy>::run_bridge_and_client::>>
  56:     0x7ff4128a3970 - ::expand
  57:     0x7ff4144df997 - ::fully_expand_fragment
  58:     0x7ff4144d9bb7 - ::expand_crate
  59:     0x7ff4149b0d92 - rustc_interface[d43ea88de449c898]::passes::resolver_for_lowering
  60:     0x7ff4149b0267 - rustc_query_impl[72e671e77ccdc0fd]::plumbing::__rust_begin_short_backtrace::>
  61:     0x7ff4147176ce - rustc_query_system[eb6d0acd22a0ff82]::query::plumbing::try_execute_query::>, false, false, false>, rustc_query_impl[72e671e77ccdc0fd]::plumbing::QueryCtxt, false>
  62:     0x7ff414716e4b - rustc_query_impl[72e671e77ccdc0fd]::query_impl::resolver_for_lowering::get_query_non_incr::__rust_end_short_backtrace
  63:     0x7ff414764697 - rustc_interface[d43ea88de449c898]::interface::run_compiler::, rustc_driver_impl[98bdfcf9c8fb7ba2]::run_compiler::{closure#0}>::{closure#0}
  64:     0x7ff4149c1c05 - std[38a2ac7f7aa65357]::sys_common::backtrace::__rust_begin_short_backtrace::, rustc_driver_impl[98bdfcf9c8fb7ba2]::run_compiler::{closure#0}>::{closure#0}, core[9082f35584c4c405]::result::Result<(), rustc_span[39701832932d6f53]::ErrorGuaranteed>>::{closure#0}, core[9082f35584c4c405]::result::Result<(), rustc_span[39701832932d6f53]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[9082f35584c4c405]::result::Result<(), rustc_span[39701832932d6f53]::ErrorGuaranteed>>
  65:     0x7ff4149c1a32 - <::spawn_unchecked_, rustc_driver_impl[98bdfcf9c8fb7ba2]::run_compiler::{closure#0}>::{closure#0}, core[9082f35584c4c405]::result::Result<(), rustc_span[39701832932d6f53]::ErrorGuaranteed>>::{closure#0}, core[9082f35584c4c405]::result::Result<(), rustc_span[39701832932d6f53]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[9082f35584c4c405]::result::Result<(), rustc_span[39701832932d6f53]::ErrorGuaranteed>>::{closure#1} as core[9082f35584c4c405]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  66:     0x7ff40f999725 -  as core::ops::function::FnOnce>::call_once::h8e2928e2096a726d
                               at /rustc/bb[594](https://github.com/rwf2/Rocket/actions/runs/7985532655/job/21804162579#step:11:595)538fc6e84213a6b8d5e165442570aa48923/library/alloc/src/boxed.rs:2016:9
  67:     0x7ff40f999725 -  as core::ops::function::FnOnce>::call_once::h4f25e5317edfd[617](https://github.com/rwf2/Rocket/actions/runs/7985532655/job/21804162579#step:11:618)
                               at /rustc/bb594538fc6e84213a6b8d5e1[654](https://github.com/rwf2/Rocket/actions/runs/7985532655/job/21804162579#step:11:655)42570aa48923/library/alloc/src/boxed.rs:2016:9
  68:     0x7ff40f999725 - std::sys::pal::unix::thread::Thread::new::thread_start::hc7193b55f6b48c9a
                               at /rustc/bb594538fc6e84213a6b8d5e165442570aa48923/library/std/src/sys/pal/unix/thread.rs:108:17
  69:     0x7ff40f694ac3 - 
  70:     0x7ff40f726850 - 
  71:                0x0 - 

error: the compiler unexpectedly panicked. this is a bug.


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: please attach the file at /home/runner/work/Rocket/Rocket/rustc-ice-2024-02-21T07_39_46-10723.txt to your bug report


note: compiler flags: -C embed-bitcode=no -C debuginfo=2


note: some of the compiler flags provided by cargo are hidden


query stack during panic:

#0 [resolver_for_lowering] getting the resolver for lowering

end of query stack

error: custom attribute panicked

--> core/codegen/tests/route-format.rs:82:1

|

82 | #[put("/", format = "bar/baz")]

| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

|

= help: message: invalid diagnostic level (Warning)

rust-timer added a commit to rust-lang-ci/rust that referenced this pull request Feb 21, 2024
@rust-timer
Unrolled build for rust-lang#121366
96c750e 
Rollup merge of rust-lang#121366 - nnethercote:rm-diagnostic_builder.rs, r=compiler-errors

Remove `diagnostic_builder.rs`

rust-lang#120576 moved a big chunk of `DiagnosticBuilder`'s functionality out of `diagnostic_builder.rs` into `diagnostic.rs`, which left `DiagnosticBuilder` spread across the two files.

This PR fixes that messiness by merging what remains of `diagnostic_builder.rs` into `diagnostic.rs`.

This is part of rust-lang/compiler-team#722.

r? `@davidtwco`
nnethercote added a commit to nnethercote/rust that referenced this pull request Feb 22, 2024
@nnethercote
Fix panic when compiling Rocket.
326b44e 
`Rustc::emit_diagnostic` reconstructs a diagnostic passed in from the
macro machinery. Currently it uses the type `DiagnosticBuilder<'_,
ErrorGuaranteed>`, which is incorrect, because the diagnostic might be a
warning. And if it is a warning, because of the `ErrorGuaranteed` we end
up calling into `emit_producing_error_guaranteed` and the assertion
within that function (correctly) fails because the level is not an error
level.

The fix is simple: change the type to `DiagnosticBuilder<'_, ()>`. Using
`()` works no matter what the diagnostic level is, and we don't need an
`ErrorGuaranteed` here.

The panic was reported in rust-lang#120576.
@nnethercote nnethercote mentioned this pull request Feb 22, 2024
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I believe this has broken Rocket on nightly.

Thanks for the report, #121427 should fix it.

matthiaskrgr added a commit to matthiaskrgr/rust that referenced this pull request Feb 22, 2024
@matthiaskrgr
Rollup merge of rust-lang#121427 - nnethercote:fix-Rocket, r=oli-obk
f9aeaa6 
Fix panic when compiling `Rocket`.

This panic was reported [here](rust-lang#120576 (comment)).

r? `@oli-obk`
matthiaskrgr added a commit to matthiaskrgr/rust that referenced this pull request Feb 22, 2024
@matthiaskrgr
Rollup merge of rust-lang#121427 - nnethercote:fix-Rocket, r=oli-obk
01ec4eb 
Fix panic when compiling `Rocket`.

This panic was reported [here](rust-lang#120576 (comment)).

r? ``@oli-obk``
rust-timer added a commit to rust-lang-ci/rust that referenced this pull request Feb 22, 2024
@rust-timer
Unrolled build for rust-lang#121427
13754ed 
Rollup merge of rust-lang#121427 - nnethercote:fix-Rocket, r=oli-obk

Fix panic when compiling `Rocket`.

This panic was reported [here](rust-lang#120576 (comment)).

r? ``@oli-obk``
@SergioBenitez
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Sure did! Thank you!

flip1995 pushed a commit to flip1995/rust that referenced this pull request Feb 26, 2024
@bors
Auto merge of rust-lang#120576 - nnethercote:merge-Diagnostic-Diagnos…
31b551f 
…ticBuilder, r=davidtwco

Overhaul `Diagnostic` and `DiagnosticBuilder`

Implements the first part of rust-lang/compiler-team#722, which moves functionality and use away from `Diagnostic`, onto `DiagnosticBuilder`.

Likely follow-ups:
- Move things around, because this PR was written to minimize diff size, so some things end up in sub-optimal places. E.g. `DiagnosticBuilder` has impls in both `diagnostic.rs` and `diagnostic_builder.rs`.
- Rename `Diagnostic` as `DiagInner` and `DiagnosticBuilder` as `Diag`.

r? `@davidtwco`
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A-translation Area: Translation infrastructure, and migrating existing diagnostics to SessionDiagnostic merged-by-bors This PR was explicitly merged by bors. S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. T-rustdoc Relevant to the rustdoc team, which will review and decide on the PR/issue.
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