[Bug fortran/69554] [6 Regression] Multi-location diagnostics writes too many lines

[manu at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69554

--- Comment #10 from Manuel López-Ibáñez <manu at gcc dot gnu.org> ---
(In reply to Dominique d'Humieres from comment #8)
> This seems a lot of work for big patches. Note that this is not specific to
> gfortran: any one committing a patch should look at the Intel results!

If someone adds a diagnostic surely is because they can think at least one
testcase where the diagnostic would be needed. Adding such a testcase to the
testsuite is just an insurance for the future that the code will keep working
as intended. (I don't know what "Intel results" means)