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

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

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

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
  linemap_assert (SOURCE_LINE (map, r) == to_line);

maybe some overflow somewhere that's not catched.