[Bug target/124137] [16 Regression] build doesn't finish after 4h+

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=124137

--- Comment #8 from Richard Biener <rguenth at gcc dot gnu.org> ---
(In reply to Richard Biener from comment #7)
> Created attachment 63705 [details]
> unincluded first testcase
> 
> This works with both GCC 15 and trunk, is fast (few seconds) with GCC 15.

-std=c++17 -O2 -fPIC

is enough to reproduce.