ICE on "index out of bounds: the len is 0 but the index is 1"
dwrensha opened this issue · 3 comments
dwrensha commented
When I try to run rustc on this program (found by fuzz-rustc)
fn f() -> isize { fn f() -> isize {} pub f<it crashes with this error:
error: this file contains an un-closed delimiter
--> main.rs:1:45
|
1 | fn f() -> isize { fn f() -> isize {} pub f<
| - un-closed delimiter ^
thread 'rustc' panicked at 'index out of bounds: the len is 0 but the index is 1', /rustc/273f42b5964c29dda2c5a349dd4655529767b07f/src/libcore/slice/mod.rs:2687:14
stack backtrace:
0: std::panicking::default_hook::{{closure}}
1: std::panicking::default_hook
2: rustc::util::common::panic_hook
3: std::panicking::rust_panic_with_hook
4: std::panicking::continue_panic_fmt
5: rust_begin_unwind
6: core::panicking::panic_fmt
7: core::panicking::panic_bounds_check
8: syntax::parse::parser::Parser::parse_item_
9: syntax::parse::parser::Parser::parse_stmt_without_recovery
10: syntax::parse::parser::Parser::parse_full_stmt
11: syntax::parse::parser::Parser::parse_block_tail
12: syntax::parse::parser::Parser::parse_inner_attrs_and_block
13: syntax::parse::parser::Parser::parse_item_fn
14: syntax::parse::parser::Parser::parse_item_implementation
15: syntax::parse::parser::Parser::parse_item_
16: syntax::parse::parser::Parser::parse_item
17: syntax::parse::parser::Parser::parse_mod_items
18: syntax::parse::parser::Parser::parse_crate_mod
19: syntax::parse::parse_crate_from_file
20: rustc_interface::passes::parse::{{closure}}
21: rustc::util::common::time
22: rustc_interface::passes::parse
23: rustc_interface::queries::Query<T>::compute
24: rustc_interface::queries::<impl rustc_interface::interface::Compiler>::parse
25: rustc_interface::interface::run_compiler_in_existing_thread_pool
26: std::thread::local::LocalKey<T>::with
27: syntax::with_globals
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.
query stack during panic:
end of query stack
error: aborting due to previous error
error: internal compiler error: unexpected panic
note: the compiler unexpectedly panicked. this is a bug.
note: we would appreciate a bug report: https://github.com/rust-lang/rust/blob/master/CONTRIBUTING.md#bug-reports
note: rustc 1.38.0-nightly (273f42b59 2019-07-21) running on x86_64-apple-darwin
The error happens on stable, beta, and nightly.
estebank commented
Introduced in 1.33.
dwrensha commented