Panic entered unreachable code f-string: unexpected token 'TStringMiddle' at 6..7 in ruff_python_parser/src/parser/expression.rs #18860
Description
Summary
File content(at the bottom should be attached raw, not formatted file - github removes some non-printable characters, so copying from here may not work):
c('{\t"i}')
command
timeout -v 300 ruff check TEST___FILE.py --select ALL --preview --output-format concise --no-cache --fix --unsafe-fixes --isolated
cause this
All checks passed!
warning: `incorrect-blank-line-before-class` (D203) and `no-blank-line-before-class` (D211) are incompatible. Ignoring `incorrect-blank-line-before-class`.
warning: `multi-line-summary-first-line` (D212) and `multi-line-summary-second-line` (D213) are incompatible. Ignoring `multi-line-summary-second-line`.
error: Panicked while linting /opt/BROKEN_FILES_DIR/205_IDX_0_RAND_1805299505270516981735147_minimized_717.py: This indicates a bug in Ruff. If you could open an issue at:
https://github.com/astral-sh/ruff/issues/new?title=%5BLinter%20panic%5D
...with the relevant file contents, the `pyproject.toml` settings, and the following stack trace, we'd be very appreciative!
panicked at crates/ruff_python_parser/src/parser/expression.rs:1691:25:
internal error: entered unreachable code: f-string: unexpected token `TStringMiddle` at 6..7
Backtrace: 0: ruff_db::panic::install_hook::{{closure}}::{{closure}}
at ./ruff-main/crates/ruff_db/src/panic.rs:91:34
1: <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call
at /rustc/d4e1159b8c97478778b09a4cc1c7adce5653b8bf/library/alloc/src/boxed.rs:1980:9
2: std::panicking::rust_panic_with_hook
at /rustc/d4e1159b8c97478778b09a4cc1c7adce5653b8bf/library/std/src/panicking.rs:841:13
3: std::panicking::begin_panic_handler::{{closure}}
at /rustc/d4e1159b8c97478778b09a4cc1c7adce5653b8bf/library/std/src/panicking.rs:706:13
4: std::sys::backtrace::__rust_end_short_backtrace
at /rustc/d4e1159b8c97478778b09a4cc1c7adce5653b8bf/library/std/src/sys/backtrace.rs:168:18
5: __rustc::rust_begin_unwind
at /rustc/d4e1159b8c97478778b09a4cc1c7adce5653b8bf/library/std/src/panicking.rs:697:5
6: core::panicking::panic_fmt
at /rustc/d4e1159b8c97478778b09a4cc1c7adce5653b8bf/library/core/src/panicking.rs:75:14
7: ruff_python_parser::parser::expression::<impl ruff_python_parser::parser::Parser>::parse_interpolated_string_elements::{{closure}}
at ./ruff-main/crates/ruff_python_parser/src/parser/expression.rs:1691:25
8: ruff_python_parser::parser::Parser::parse_list
at ./ruff-main/crates/ruff_python_parser/src/parser/mod.rs:507:17
9: ruff_python_parser::parser::expression::<impl ruff_python_parser::parser::Parser>::parse_interpolated_string_elements
at ./ruff-main/crates/ruff_python_parser/src/parser/expression.rs:1648:14
10: ruff_python_parser::parser::expression::<impl ruff_python_parser::parser::Parser>::parse_interpolated_string
at ./ruff-main/crates/ruff_python_parser/src/parser/expression.rs:1528:29
11: ruff_python_parser::parser::expression::<impl ruff_python_parser::parser::Parser>::parse_strings
at ./ruff-main/crates/ruff_python_parser/src/parser/expression.rs:1249:26
12: ruff_python_parser::parser::expression::<impl ruff_python_parser::parser::Parser>::parse_atom
at ./ruff-main/crates/ruff_python_parser/src/parser/expression.rs:613:22
13: ruff_python_parser::parser::expression::<impl ruff_python_parser::parser::Parser>::parse_lhs_expression
at ./ruff-main/crates/ruff_python_parser/src/parser/expression.rs:414:24
14: ruff_python_parser::parser::expression::<impl ruff_python_parser::parser::Parser>::parse_binary_expression_or_higher
at ./ruff-main/crates/ruff_python_parser/src/parser/expression.rs:249:24
15: ruff_python_parser::parser::expression::<impl ruff_python_parser::parser::Parser>::parse_simple_expression
at ./ruff-main/crates/ruff_python_parser/src/parser/expression.rs:237:14
16: ruff_python_parser::parser::expression::<impl ruff_python_parser::parser::Parser>::parse_conditional_expression_or_higher_impl
at ./ruff-main/crates/ruff_python_parser/src/parser/expression.rs:214:36
17: ruff_python_parser::parser::expression::<impl ruff_python_parser::parser::Parser>::parse_expression_list
at ./ruff-main/crates/ruff_python_parser/src/parser/expression.rs:152:32
18: ruff_python_parser::parser::Parser::parse_single_expression
at ./ruff-main/crates/ruff_python_parser/src/parser/mod.rs:108:32
19: ruff_python_parser::parser::Parser::parse
at ./ruff-main/crates/ruff_python_parser/src/parser/mod.rs:90:38
20: ruff_python_parser::parse_expression
at ./ruff-main/crates/ruff_python_parser/src/lib.rs:141:10
21: ruff_linter::rules::ruff::rules::missing_fstring_syntax::should_be_fstring
at ./ruff-main/crates/ruff_linter/src/rules/ruff/rules/missing_fstring_syntax.rs:188:22
22: ruff_linter::rules::ruff::rules::missing_fstring_syntax::missing_fstring_syntax
at ./ruff-main/crates/ruff_linter/src/rules/ruff/rules/missing_fstring_syntax.rs:118:8
23: ruff_linter::checkers::ast::analyze::expression::expression
at ./ruff-main/crates/ruff_linter/src/checkers/ast/analyze/expression.rs:1582:21
24: <ruff_linter::checkers::ast::Checker as ruff_python_ast::visitor::Visitor>::visit_expr
at ./ruff-main/crates/ruff_linter/src/checkers/ast/mod.rs:1998:9
25: ruff_linter::checkers::ast::Checker::visit_non_type_definition
at ./ruff-main/crates/ruff_linter/src/checkers/ast/mod.rs:2356:14
26: <ruff_linter::checkers::ast::Checker as ruff_python_ast::visitor::Visitor>::visit_expr
at ./ruff-main/crates/ruff_linter/src/checkers/ast/mod.rs:1840:34
27: ruff_python_ast::visitor::walk_stmt
28: <ruff_linter::checkers::ast::Checker as ruff_python_ast::visitor::Visitor>::visit_stmt
at ./ruff-main/crates/ruff_linter/src/checkers/ast/mod.rs:1362:18
29: <ruff_linter::checkers::ast::Checker as ruff_python_ast::visitor::Visitor>::visit_body
at ./ruff-main/crates/ruff_linter/src/checkers/ast/mod.rs:2112:18
30: ruff_linter::checkers::ast::check_ast
at ./ruff-main/crates/ruff_linter/src/checkers/ast/mod.rs:3083:13
31: ruff_linter::linter::check_path
at ./ruff-main/crates/ruff_linter/src/linter.rs:229:39
32: ruff_linter::linter::lint_fix
at ./ruff-main/crates/ruff_linter/src/linter.rs:639:27
33: ruff::diagnostics::lint_path
at ./ruff-main/crates/ruff/src/diagnostics.rs:268:18
34: ruff::commands::check::lint_path::{{closure}}
at ./ruff-main/crates/ruff/src/commands/check.rs:192:9
35: std::panicking::catch_unwind::do_call
at /home/runner/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/std/src/panicking.rs:589:40
36: __rust_try
37: std::panicking::catch_unwind
at /home/runner/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/std/src/panicking.rs:552:19
38: std::panic::catch_unwind
at /home/runner/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/std/src/panic.rs:359:14
39: ruff_db::panic::catch_unwind
at ./ruff-main/crates/ruff_db/src/panic.rs:122:18
40: ruff::commands::check::lint_path
at ./ruff-main/crates/ruff/src/commands/check.rs:191:18
41: ruff::commands::check::check::{{closure}}
at ./ruff-main/crates/ruff/src/commands/check.rs:94:17
42: <rayon::iter::filter_map::FilterMapFolder<C,P> as rayon::iter::plumbing::Folder<T>>::consume
at /home/runner/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/rayon-1.10.0/src/iter/filter_map.rs:123:36
43: rayon::iter::plumbing::Folder::consume_iter
at /home/runner/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/rayon-1.10.0/src/iter/plumbing/mod.rs:178:25
44: rayon::iter::plumbing::Producer::fold_with
at /home/runner/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/rayon-1.10.0/src/iter/plumbing/mod.rs:109:16
45: rayon::iter::plumbing::bridge_producer_consumer::helper
at /home/runner/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/rayon-1.10.0/src/iter/plumbing/mod.rs:437:22
46: rayon::iter::plumbing::bridge_producer_consumer
at /home/runner/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/rayon-1.10.0/src/iter/plumbing/mod.rs:396:12
47: <rayon::iter::plumbing::bridge::Callback<C> as rayon::iter::plumbing::ProducerCallback<I>>::callback
at /home/runner/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/rayon-1.10.0/src/iter/plumbing/mod.rs:372:13
48: <rayon::slice::Iter<T> as rayon::iter::IndexedParallelIterator>::with_producer
at /home/runner/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/rayon-1.10.0/src/slice/mod.rs:826:18
49: rayon::iter::plumbing::bridge
at /home/runner/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/rayon-1.10.0/src/iter/plumbing/mod.rs:356:21
50: <rayon::slice::Iter<T> as rayon::iter::ParallelIterator>::drive_unindexed
at /home/runner/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/rayon-1.10.0/src/slice/mod.rs:802:9
51: <rayon::iter::filter_map::FilterMap<I,P> as rayon::iter::ParallelIterator>::drive_unindexed
at /home/runner/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/rayon-1.10.0/src/iter/filter_map.rs:46:19
52: <rayon::iter::fold::Fold<I,ID,F> as rayon::iter::ParallelIterator>::drive_unindexed
at /home/runner/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/rayon-1.10.0/src/iter/fold.rs:59:19
53: rayon::iter::reduce::reduce
at /home/runner/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/rayon-1.10.0/src/iter/reduce.rs:15:8
54: rayon::iter::ParallelIterator::reduce
at /home/runner/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/rayon-1.10.0/src/iter/mod.rs:998:9
55: ruff::commands::check::check
at ./ruff-main/crates/ruff/src/commands/check.rs:164:10
56: ruff::check
at ./ruff-main/crates/ruff/src/lib.rs:420:13
57: ruff::run
at ./ruff-main/crates/ruff/src/lib.rs:198:33
58: ruff::main
at ./ruff-main/crates/ruff/src/main.rs:45:11
59: core::ops::function::FnOnce::call_once
at /home/runner/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/ops/function.rs:250:5
60: std::sys::backtrace::__rust_begin_short_backtrace
at /home/runner/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/std/src/sys/backtrace.rs:152:18
61: std::rt::lang_start::{{closure}}
at /home/runner/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/std/src/rt.rs:206:18
62: core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once
at /rustc/d4e1159b8c97478778b09a4cc1c7adce5653b8bf/library/core/src/ops/function.rs:284:21
63: std::panicking::catch_unwind::do_call
at /rustc/d4e1159b8c97478778b09a4cc1c7adce5653b8bf/library/std/src/panicking.rs:589:40
64: std::panicking::catch_unwind
at /rustc/d4e1159b8c97478778b09a4cc1c7adce5653b8bf/library/std/src/panicking.rs:552:19
65: std::panic::catch_unwind
at /rustc/d4e1159b8c97478778b09a4cc1c7adce5653b8bf/library/std/src/panic.rs:359:14
66: std::rt::lang_start_internal::{{closure}}
at /rustc/d4e1159b8c97478778b09a4cc1c7adce5653b8bf/library/std/src/rt.rs:175:24
67: std::panicking::catch_unwind::do_call
at /rustc/d4e1159b8c97478778b09a4cc1c7adce5653b8bf/library/std/src/panicking.rs:589:40
68: std::panicking::catch_unwind
at /rustc/d4e1159b8c97478778b09a4cc1c7adce5653b8bf/library/std/src/panicking.rs:552:19
69: std::panic::catch_unwind
at /rustc/d4e1159b8c97478778b09a4cc1c7adce5653b8bf/library/std/src/panic.rs:359:14
70: std::rt::lang_start_internal
at /rustc/d4e1159b8c97478778b09a4cc1c7adce5653b8bf/library/std/src/rt.rs:171:5
71: std::rt::lang_start
at /home/runner/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/std/src/rt.rs:205:5
72: <unknown>
73: __libc_start_main
74: _start
##### Automatic Fuzzer note, output status "Some(0)", output signal "None"