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ICE: None in compiler/rustc_parse/src/parser/attr_wrapper.rs, Zunpretty=ast-tree #105273

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matthiaskrgr opened this issue Dec 4, 2022 · 6 comments
Closed

ICE: None in compiler/rustc_parse/src/parser/attr_wrapper.rs, Zunpretty=ast-tree #105273

matthiaskrgr opened this issue Dec 4, 2022 · 6 comments
Labels
C-bug Category: This is a bug. E-needs-test Call for participation: An issue has been fixed and does not reproduce, but no test has been added. glacier ICE tracked in rust-lang/glacier. I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ requires-nightly This issue requires a nightly compiler in some way. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.

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@matthiaskrgr
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matthiaskrgr commented Dec 4, 2022 •
edited by rustbot
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Code

#![c = ({(while ""))();

Meta

rustc --version --verbose:

rustc 1.67.0-nightly (234151769 2022-12-03)
binary: rustc
commit-hash: 23415176968e81e0aac92d0218612a89c4e68a82
commit-date: 2022-12-03
host: x86_64-unknown-linux-gnu
release: 1.67.0-nightly
LLVM version: 15.0.4

Error output

rustc -Zunpretty=ast-tree

 --> 601109e5755a0079ced5ae51a466eeeddb90f965.rs:6:2
  |
1 | #![c = ({(while ""))();
  |   - unclosed delimiter
...
6 |
  |  ^

error: expected `{`, found `)`
 --> 601109e5755a0079ced5ae51a466eeeddb90f965.rs:1:19
  |
1 | #![c = ({(while ""))();
  |           ----- --^ expected `{`
  |           |     |
  |           |     this `while` condition successfully parsed
  |           while parsing the body of this `while` expression

error: expected expression, found `]`
 --> 601109e5755a0079ced5ae51a466eeeddb90f965.rs:6:2
  |
6 |
  |  ^ expected expression

error: expected one of `)`, `.`, `?`, `]`, `}`, or an operator, found `<eof>`
 --> 601109e5755a0079ced5ae51a466eeeddb90f965.rs:1:9
  |
1 | #![c = ({(while ""))();
  |         ^ unclosed delimiter
...
6 |
  |  ^ help: `}` may belong here
Backtrace 

thread '<unnamed>' panicked at 'called `Option::unwrap()` on a `None` value', compiler/rustc_parse/src/parser/attr_wrapper.rs:415:45
stack backtrace:
   0:     0x7f6584f6625a - std::backtrace_rs::backtrace::libunwind::trace::h39c51bcedb139b44
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
   1:     0x7f6584f6625a - std::backtrace_rs::backtrace::trace_unsynchronized::h9cf890f6f509d0c3
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7f6584f6625a - std::sys_common::backtrace::_print_fmt::h4a0d7673c4689a86
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/std/src/sys_common/backtrace.rs:65:5
   3:     0x7f6584f6625a - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hed99d8097fd95926
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/std/src/sys_common/backtrace.rs:44:22
   4:     0x7f6584fc8e4e - core::fmt::write::hdab16ae0136a16af
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/core/src/fmt/mod.rs:1208:17
   5:     0x7f6584f56675 - std::io::Write::write_fmt::h9619f0289bf5af21
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/std/src/io/mod.rs:1682:15
   6:     0x7f6584f66025 - std::sys_common::backtrace::_print::h2fbe09348ca97657
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/std/src/sys_common/backtrace.rs:47:5
   7:     0x7f6584f66025 - std::sys_common::backtrace::print::h72058f5ceb813403
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/std/src/sys_common/backtrace.rs:34:9
   8:     0x7f6584f68d6f - std::panicking::default_hook::{{closure}}::h1542b395e584376b
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/std/src/panicking.rs:267:22
   9:     0x7f6584f68aab - std::panicking::default_hook::hf92492522bb6bc51
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/std/src/panicking.rs:286:9
  10:     0x7f6584f6958c - std::panicking::rust_panic_with_hook::h8e3ba576266d6126
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/std/src/panicking.rs:688:13
  11:     0x7f6584f692e2 - std::panicking::begin_panic_handler::{{closure}}::h5718d689762256a1
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/std/src/panicking.rs:577:13
  12:     0x7f6584f6670c - std::sys_common::backtrace::__rust_end_short_backtrace::hb4469c61f2390e29
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/std/src/sys_common/backtrace.rs:137:18
  13:     0x7f6584f69032 - rust_begin_unwind
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/std/src/panicking.rs:575:5
  14:     0x7f6584fc5863 - core::panicking::panic_fmt::h4dafe9d2577d7060
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/core/src/panicking.rs:64:14
  15:     0x7f6584fc593d - core::panicking::panic::h9c1c5c325ce19e28
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/core/src/panicking.rs:111:5
  16:     0x7f65877a8f8c - <rustc_parse[ca2e37bb52d9ff08]::parser::attr_wrapper::LazyAttrTokenStreamImpl as rustc_ast[56a23deec7d2f949]::tokenstream::ToAttrTokenStream>::to_attr_token_stream
  17:     0x7f6587f0a926 - <rustc_ast[56a23deec7d2f949]::tokenstream::LazyAttrTokenStream as core[ec9ef0a26f3cf28]::fmt::Debug>::fmt
  18:     0x7f6584fc63b5 - core::fmt::builders::DebugTuple::field::{{closure}}::h37a216a421c6a64f
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/core/src/fmt/builders.rs:317:17
  19:     0x7f6584fc63b5 - core::result::Result<T,E>::and_then::ha646669375a7cc05
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/core/src/result.rs:1372:22
  20:     0x7f6584fc63b5 - core::fmt::builders::DebugTuple::field::h3f0dc90ef92ed759
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/core/src/fmt/builders.rs:309:23
  21:     0x7f6584fca439 - core::fmt::Formatter::debug_tuple_field1_finish::ha3d740adf26beb14
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/core/src/fmt/mod.rs:2139:9
  22:     0x7f6587efbbaf - <&core[ec9ef0a26f3cf28]::option::Option<rustc_ast[56a23deec7d2f949]::tokenstream::LazyAttrTokenStream> as core[ec9ef0a26f3cf28]::fmt::Debug>::fmt
  23:     0x7f6584fc615f - core::fmt::builders::DebugStruct::field::{{closure}}::h57980c21e691a114
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/core/src/fmt/builders.rs:134:17
  24:     0x7f6584fc615f - core::result::Result<T,E>::and_then::h9421d61926c79c01
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/core/src/result.rs:1372:22
  25:     0x7f6584fc615f - core::fmt::builders::DebugStruct::field::h30227c010224fcf4
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/core/src/fmt/builders.rs:124:23
  26:     0x7f6584fca249 - core::fmt::Formatter::debug_struct_field5_finish::h76f021d50af8fbf6
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/core/src/fmt/mod.rs:2080:9
  27:     0x7f6587ef1f2c - <rustc_ast[56a23deec7d2f949]::ast::Expr as core[ec9ef0a26f3cf28]::fmt::Debug>::fmt
  28:     0x7f6584fc63b5 - core::fmt::builders::DebugTuple::field::{{closure}}::h37a216a421c6a64f
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/core/src/fmt/builders.rs:317:17
  29:     0x7f6584fc63b5 - core::result::Result<T,E>::and_then::ha646669375a7cc05
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/core/src/result.rs:1372:22
  30:     0x7f6584fc63b5 - core::fmt::builders::DebugTuple::field::h3f0dc90ef92ed759
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/core/src/fmt/builders.rs:309:23
  31:     0x7f6584fca439 - core::fmt::Formatter::debug_tuple_field1_finish::ha3d740adf26beb14
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/core/src/fmt/mod.rs:2139:9
  32:     0x7f6587ef2e45 - <rustc_ast[56a23deec7d2f949]::ast::AttrArgsEq as core[ec9ef0a26f3cf28]::fmt::Debug>::fmt
  33:     0x7f6584fc63b5 - core::fmt::builders::DebugTuple::field::{{closure}}::h37a216a421c6a64f
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/core/src/fmt/builders.rs:317:17
  34:     0x7f6584fc63b5 - core::result::Result<T,E>::and_then::ha646669375a7cc05
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/core/src/result.rs:1372:22
  35:     0x7f6584fc63b5 - core::fmt::builders::DebugTuple::field::h3f0dc90ef92ed759
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/core/src/fmt/builders.rs:309:23
  36:     0x7f6584fca512 - core::fmt::Formatter::debug_tuple_field2_finish::habd6ca74075a4a8f
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/core/src/fmt/mod.rs:2155:9
  37:     0x7f6587ef2dee - <rustc_ast[56a23deec7d2f949]::ast::AttrArgs as core[ec9ef0a26f3cf28]::fmt::Debug>::fmt
  38:     0x7f6584fc615f - core::fmt::builders::DebugStruct::field::{{closure}}::h57980c21e691a114
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/core/src/fmt/builders.rs:134:17
  39:     0x7f6584fc615f - core::result::Result<T,E>::and_then::h9421d61926c79c01
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/core/src/result.rs:1372:22
  40:     0x7f6584fc615f - core::fmt::builders::DebugStruct::field::h30227c010224fcf4
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/core/src/fmt/builders.rs:124:23
  41:     0x7f6584fc9fda - core::fmt::Formatter::debug_struct_field3_finish::h0b088461cc839e4a
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/core/src/fmt/mod.rs:2028:9
  42:     0x7f6587eed50d - <&rustc_ast[56a23deec7d2f949]::ast::AttrItem as core[ec9ef0a26f3cf28]::fmt::Debug>::fmt
  43:     0x7f6584fc615f - core::fmt::builders::DebugStruct::field::{{closure}}::h57980c21e691a114
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/core/src/fmt/builders.rs:134:17
  44:     0x7f6584fc615f - core::result::Result<T,E>::and_then::h9421d61926c79c01
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/core/src/result.rs:1372:22
  45:     0x7f6584fc615f - core::fmt::builders::DebugStruct::field::h30227c010224fcf4
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/core/src/fmt/builders.rs:124:23
  46:     0x7f6584fc9ef4 - core::fmt::Formatter::debug_struct_field2_finish::he73c086eb7141c7a
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/core/src/fmt/mod.rs:2007:9
  47:     0x7f6587ef4f12 - <rustc_ast[56a23deec7d2f949]::ast::NormalAttr as core[ec9ef0a26f3cf28]::fmt::Debug>::fmt
  48:     0x7f6584fc63b5 - core::fmt::builders::DebugTuple::field::{{closure}}::h37a216a421c6a64f
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/core/src/fmt/builders.rs:317:17
  49:     0x7f6584fc63b5 - core::result::Result<T,E>::and_then::ha646669375a7cc05
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/core/src/result.rs:1372:22
  50:     0x7f6584fc63b5 - core::fmt::builders::DebugTuple::field::h3f0dc90ef92ed759
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/core/src/fmt/builders.rs:309:23
  51:     0x7f6584fca439 - core::fmt::Formatter::debug_tuple_field1_finish::ha3d740adf26beb14
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/core/src/fmt/mod.rs:2139:9
  52:     0x7f6587ef4ea8 - <rustc_ast[56a23deec7d2f949]::ast::AttrKind as core[ec9ef0a26f3cf28]::fmt::Debug>::fmt
  53:     0x7f6584fc615f - core::fmt::builders::DebugStruct::field::{{closure}}::h57980c21e691a114
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/core/src/fmt/builders.rs:134:17
  54:     0x7f6584fc615f - core::result::Result<T,E>::and_then::h9421d61926c79c01
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/core/src/result.rs:1372:22
  55:     0x7f6584fc615f - core::fmt::builders::DebugStruct::field::h30227c010224fcf4
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/core/src/fmt/builders.rs:124:23
  56:     0x7f6584fca0b1 - core::fmt::Formatter::debug_struct_field4_finish::h6299e00de25fac79
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/core/src/fmt/mod.rs:2050:9
  57:     0x7f6587ef4e1a - <rustc_ast[56a23deec7d2f949]::ast::Attribute as core[ec9ef0a26f3cf28]::fmt::Debug>::fmt
  58:     0x7f6584fc6550 - core::fmt::builders::DebugInner::entry::{{closure}}::h770fe7d30810a1aa
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/core/src/fmt/builders.rs:388:17
  59:     0x7f6584fc6550 - core::result::Result<T,E>::and_then::h89ad0f5adbf63705
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/core/src/result.rs:1372:22
  60:     0x7f6584fc6550 - core::fmt::builders::DebugInner::entry::h89e8f2f2f4f9debb
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/core/src/fmt/builders.rs:380:23
  61:     0x7f6584fc6589 - core::fmt::builders::DebugSet::entry::h495dd716c19b682e
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/core/src/fmt/builders.rs:469:9
  62:     0x7f6587f0d50d - <core[ec9ef0a26f3cf28]::fmt::builders::DebugList>::entries::<&rustc_ast[56a23deec7d2f949]::ast::Attribute, core[ec9ef0a26f3cf28]::slice::iter::Iter<rustc_ast[56a23deec7d2f949]::ast::Attribute>>
  63:     0x7f6587eee2f3 - <[rustc_ast[56a23deec7d2f949]::ast::Attribute] as core[ec9ef0a26f3cf28]::fmt::Debug>::fmt
  64:     0x7f6584fc615f - core::fmt::builders::DebugStruct::field::{{closure}}::h57980c21e691a114
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/core/src/fmt/builders.rs:134:17
  65:     0x7f6584fc615f - core::result::Result<T,E>::and_then::h9421d61926c79c01
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/core/src/result.rs:1372:22
  66:     0x7f6584fc615f - core::fmt::builders::DebugStruct::field::h30227c010224fcf4
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/core/src/fmt/builders.rs:124:23
  67:     0x7f6584fca1c4 - core::fmt::Formatter::debug_struct_field5_finish::h76f021d50af8fbf6
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/core/src/fmt/mod.rs:2076:9
  68:     0x7f6587ef0d3c - <rustc_ast[56a23deec7d2f949]::ast::Crate as core[ec9ef0a26f3cf28]::fmt::Debug>::fmt
  69:     0x7f6584fc8de2 - core::fmt::run::he4931553894777da
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/core/src/fmt/mod.rs:1256:5
  70:     0x7f6584fc8de2 - core::fmt::write::hdab16ae0136a16af
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/core/src/fmt/mod.rs:1224:26
  71:     0x7f6584fbae6f - core::fmt::Write::write_fmt::hbbb7900d3b190c17
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/core/src/fmt/mod.rs:192:9
  72:     0x7f6584fbae6f - alloc::fmt::format::format_inner::hfe803e253f8127ed
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/alloc/src/fmt.rs:612:9
  73:     0x7f65882ec74d - rustc_driver[d87acf87108c2deb]::pretty::print_after_parsing
  74:     0x7f6587443ea0 - <rustc_interface[c57545daadc3fa09]::interface::Compiler>::enter::<rustc_driver[d87acf87108c2deb]::run_compiler::{closure#1}::{closure#2}, core[ec9ef0a26f3cf28]::result::Result<core[ec9ef0a26f3cf28]::option::Option<rustc_interface[c57545daadc3fa09]::queries::Linker>, rustc_errors[57b9e96b8e7428c]::ErrorGuaranteed>>
  75:     0x7f658743e978 - rustc_span[653636119034ca50]::with_source_map::<core[ec9ef0a26f3cf28]::result::Result<(), rustc_errors[57b9e96b8e7428c]::ErrorGuaranteed>, rustc_interface[c57545daadc3fa09]::interface::run_compiler<core[ec9ef0a26f3cf28]::result::Result<(), rustc_errors[57b9e96b8e7428c]::ErrorGuaranteed>, rustc_driver[d87acf87108c2deb]::run_compiler::{closure#1}>::{closure#0}::{closure#0}>
  76:     0x7f658743e465 - <scoped_tls[2510ce566f7fd87d]::ScopedKey<rustc_span[653636119034ca50]::SessionGlobals>>::set::<rustc_interface[c57545daadc3fa09]::interface::run_compiler<core[ec9ef0a26f3cf28]::result::Result<(), rustc_errors[57b9e96b8e7428c]::ErrorGuaranteed>, rustc_driver[d87acf87108c2deb]::run_compiler::{closure#1}>::{closure#0}, core[ec9ef0a26f3cf28]::result::Result<(), rustc_errors[57b9e96b8e7428c]::ErrorGuaranteed>>
  77:     0x7f658743da52 - std[b988c8daa9554a2a]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[c57545daadc3fa09]::util::run_in_thread_pool_with_globals<rustc_interface[c57545daadc3fa09]::interface::run_compiler<core[ec9ef0a26f3cf28]::result::Result<(), rustc_errors[57b9e96b8e7428c]::ErrorGuaranteed>, rustc_driver[d87acf87108c2deb]::run_compiler::{closure#1}>::{closure#0}, core[ec9ef0a26f3cf28]::result::Result<(), rustc_errors[57b9e96b8e7428c]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[ec9ef0a26f3cf28]::result::Result<(), rustc_errors[57b9e96b8e7428c]::ErrorGuaranteed>>
  78:     0x7f6587ba6848 - <<std[b988c8daa9554a2a]::thread::Builder>::spawn_unchecked_<rustc_interface[c57545daadc3fa09]::util::run_in_thread_pool_with_globals<rustc_interface[c57545daadc3fa09]::interface::run_compiler<core[ec9ef0a26f3cf28]::result::Result<(), rustc_errors[57b9e96b8e7428c]::ErrorGuaranteed>, rustc_driver[d87acf87108c2deb]::run_compiler::{closure#1}>::{closure#0}, core[ec9ef0a26f3cf28]::result::Result<(), rustc_errors[57b9e96b8e7428c]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[ec9ef0a26f3cf28]::result::Result<(), rustc_errors[57b9e96b8e7428c]::ErrorGuaranteed>>::{closure#1} as core[ec9ef0a26f3cf28]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
  79:     0x7f65890b07f3 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::hd24e4095bea58fc3
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/alloc/src/boxed.rs:2000:9
  80:     0x7f65890b07f3 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h7c7f47af88aff778
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/alloc/src/boxed.rs:2000:9
  81:     0x7f65890b07f3 - std::sys::unix::thread::Thread::new::thread_start::h8d5de08b8b3f2cac
                               at /rustc/23415176968e81e0aac92d0218612a89c4e68a82/library/std/src/sys/unix/thread.rs:108:17
  82:     0x7f6584d068fd - <unknown>
  83:     0x7f6584d88a60 - <unknown>
  84:                0x0 - <unknown>
error: aborting due to 4 previous errors

@matthiaskrgr matthiaskrgr added I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. C-bug Category: This is a bug. requires-nightly This issue requires a nightly compiler in some way. labels Dec 4, 2022
@ThePuzzlemaker
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@rustbot claim
Gonna try to look into this, will release assignment if I can't find anything that can help me make a PR (but I'll share anything interesting, ofc)

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This problem appears to occur because when -Zunpretty=ast-tree is enabled, make_token_stream is called.
For a valid parse, such as #![no_std], all the tokens are included in the iterator passed to make_token_stream
However, for some invalid parses, such as #![c = {(while ""}); (I minimized this just so there's not so much debug input), the only tokens included are {(while ""});

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I'm unsure if the root of this problem occurs in the operation of parsing this input (e.g. error recovery?) or within the code that eventually calls this function with -Zunpretty=ast-tree. I'll look more into this tomorrow.

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ThePuzzlemaker commented Dec 6, 2022 •
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@rustbot release-assignment
I don't have enough knowledge of the parser to solve this.

@JohnTitor JohnTitor mentioned this issue Dec 20, 2022
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@rust-lang-glacier-bot rust-lang-glacier-bot added the glacier ICE tracked in rust-lang/glacier. label Dec 20, 2022
@github-actions github-actions bot mentioned this issue Mar 2, 2023
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Triage: Fixed on the latest nightly (possibly related to #108297), marking as E-needs-test.

@JohnTitor JohnTitor added the E-needs-test Call for participation: An issue has been fixed and does not reproduce, but no test has been added. label Mar 3, 2023
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Fixed by #108297, and we already have similar UI for it.

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C-bug Category: This is a bug. E-needs-test Call for participation: An issue has been fixed and does not reproduce, but no test has been added. glacier ICE tracked in rust-lang/glacier. I-ICE Issue: The compiler panicked, giving an Internal Compilation Error (ICE) ❄️ requires-nightly This issue requires a nightly compiler in some way. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
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