https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65079
Dominique d'Humieres <dominiq at lps dot ens.fr> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |WAITING Last reconfirmed| |2015-02-16 Ever confirmed|0 |1 --- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> --- Confirmed on 4.9. It works with trunk (5.0). pr65079.f90:6:22: call bim() 1 Error: Procedure 'bim' called at (1) is not explicitly declared [-Werror=implicit-procedure] pr65079.f90:11:12: use bar 1 Fatal Error: Can't open module file 'bar.mod' for reading at (1): No such file or directory f951: some warnings being treated as errors compilation terminated. I doubt this will be back ported to 4.9.