internal compiler error on 'assertion failed: bpos.to_u32() >= mbc.pos.to_u32() + mbc.bytes as u32'
dwrensha opened this issue · 3 comments
dwrensha commented
I'm seeing an internal compiler error on the following input (found by fuzz-rustc):
$ echo ICPNiAAAAAAAAAAAAAAAAAAAAAAAAAoLHTYdAAA= | base64 --decode > main.rs
$ rustc main.rs
error: unknown start of token: \u{348}
--> main.rs:1:3
|
1 | #͈
| ^
...
error: unknown start of token: \u{0}
--> main.rs:2:6
|
2 |
6
| ^
thread 'rustc' panicked at 'assertion failed: bpos.to_u32() >= mbc.pos.to_u32() + mbc.bytes as u32', src/libsyntax/source_map.rs:867:17
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace.
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 1.41.0-nightly (1bd30ce2a 2019-11-15) running on x86_64-apple-darwin
error: aborting due to 23 previous errors
Note that a similar issue (#58094) was recently closed. The fix for that (#66054 it seems) apparently does not prevent this crash.
This issue has been assigned to @CosineP via this comment.
JohnTitor commented
It seems the ICE has been fixed in latest nightly.