[Bug fortran/87851] [8/9 Regression] Wrong return type for len_trim

[dominiq at lps dot ens.fr]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87851

--- Comment #4 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> Yes, but the return type on the library side changed.

When and how do you see that?