ICE with -Zmir-opt-level=3

[oli-obk]

trying to build aho-corasick v0.5.3 with -C opt-level=3 -Zmir-opt-level=3 ICEs:

thread 'main' panicked at 'assertion failed: lo >= filemap.original_start_pos && lo <= filemap.original_end_pos', librustc_metadata/decoder.rs:345:9

[leonardo-m]

Dupe of #50411 ?

[oli-obk]

different ICE

[osa1]

I'm unable to reproduce this with nightly. In case I did something wrong here's the steps I took:

• Unpack aho-corasick-0.5.3 crate
• cargo +stage1 rustc --lib -- -Copt-level=3 -Zmir-opt-level=3 -- no panic
• rm -rf target, add --release to the previous command -- no panic
• rm -rf target
• cargo +stage1 rustc --bin aho-corasick-dot -- -Copt-level=3 -Zmir-opt-level=3
• rm -rf target, add --release to the previous command

stage 1 build with debug = true and debug_assertions = true.

[oli-obk]

I'm not even remotely sure how to write a regression test for this. It was probably fixed by one of the debuginfo PRs, which have a lot of their own tests already