[Bug c/81342] LTO: lto1: internal compiler error: Segmentation fault

[anatol.pomozov at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81342

--- Comment #3 from Anatol <anatol.pomozov at gmail dot com> ---
Hi

I indeed observe the issue in a kernel project. It is a custom x86 kernel that
is not published yet.

I tried to narrow down use case and I think I found how to reproduce the issue
easily. It looks like a trigger pattern is:

1) compile one file as 32bit code (-m32)
2) convert it to 64bit elf object using objcopy
3) link the object above with regular 64bit elf

If "-flto" is not used then linking works fine otherwise I have the crash
above.

Here is an attached repo case for your convenience.