[Bug c++/101241] Internal compiler error from MathFunctions.h in the eigen library

[r.langer at itv dot rwth-aachen.de via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101241

--- Comment #5 from Raymond Langer <r.langer at itv dot rwth-aachen.de> ---
Using only -Ofast doesn't work either:
g++ -c a-eigen_bug.ii -Ofast