vrl_parser::parse - 'begin <= end (1 <= 0) when slicing

[stasos24]

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Problem

vrl_parser::parser function panics when receive a crash_slice.file input
Steps to reproduce:
Download a repo with fuzz harness: https://github.com/stasos24/vector/tree/master/lib/vrl/parser/fuzzing

cargo build --bin covbuild
target/debug/covbuild < crash_escape.file

Configuration

No response

Version

v0.23.0

Debug Output

thread 'main' panicked at 'begin <= end (1 <= 0) when slicing `"`', library/core/src/str/mod.rs:111:5
stack backtrace:
   0: rust_begin_unwind
             at /rustc/38b72154ded23847cd08a796d0c6708b5efac265/library/std/src/panicking.rs:584:5
   1: core::panicking::panic_fmt
             at /rustc/38b72154ded23847cd08a796d0c6708b5efac265/library/core/src/panicking.rs:142:14
   2: core::str::slice_error_fail_rt
   3: core::ops::function::FnOnce::call_once
             at /rustc/38b72154ded23847cd08a796d0c6708b5efac265/library/core/src/ops/function.rs:248:5
   4: core::intrinsics::const_eval_select
             at /rustc/38b72154ded23847cd08a796d0c6708b5efac265/library/core/src/intrinsics.rs:2695:5
   5: core::str::slice_error_fail
             at /rustc/38b72154ded23847cd08a796d0c6708b5efac265/library/core/src/str/mod.rs:86:9
   6: <lookup::lookup_buf::segmentbuf::FieldBuf as core::convert::From<alloc::string::String>>::from
   7: vrl_parser::parser::__action78
   8: vrl_parser::parser::__parse__Program::__reduce245
   9: vrl_parser::parser::__parse__Program::__reduce
  10: <vrl_parser::parser::__parse__Program::__StateMachine as lalrpop_util::state_machine::ParserDefinition>::reduce
  11: covbuild::main

Example Data

crash_file

VRL source:
.s"Ws{g+ AB_3.""\"_3.""\""""

Additional Context

No response

References

No response

[StephenWakely]

The vrl source can be simplified to this and it still panics:

."""\""\""