[Bug lto/117166] [15 regression] ICE when building lxml-5.3.0 with LTO (linemap_line_start, at libcpp/line-map.cc:949)

[sjames at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117166

--- Comment #1 from Sam James <sjames at gcc dot gnu.org> ---
It's very sensitive even if e.g. copying all the headers locally. Rather than
faff more, I'll try reduce it by hand first.