https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68765
Dominique d'Humieres <dominiq at lps dot ens.fr> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |WAITING Last reconfirmed| |2015-12-08 Ever confirmed|0 |1 --- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> --- > When compiling with -Wall, we do not warn for this: Without explicit interface and the main and subroutine in different files, IMO there is no way to give a warning. Even with the test in comment 0, giving a reliable warning will be difficult. I am in favor to close this PR as WONTFIX.