https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80467
Dominique d'Humieres <dominiq at lps dot ens.fr> changed: What |Removed |Added ---------------------------------------------------------------------------- Priority|P3 |P5 Status|UNCONFIRMED |NEW Last reconfirmed| |2017-05-01 Ever confirmed|0 |1 Severity|normal |enhancement --- Comment #1 from Dominique d'Humieres <dominiq at lps dot ens.fr> --- If the compiler is configures with --enable-checking=yes I get pr80467.f90:10:0: Subroutine TestArgs ^ Error: invalid types in conversion to floating point real(kind=4) real(kind=4) (*<T8cd>) (void) compareto = (real(kind=4)) getvalue; pr80467.f90:10:0: internal compiler error: verify_gimple failed Per R1221 function-reference is procedure-designator ( [ actual-arg-spec-list ] ) the code is invalid and it's the user's responsibility to provide the parentheses. If I remove the Function GetValue, I get the expected error compareTo = GetValue 1 Error: Symbol 'getvalue' at (1) has no IMPLICIT type It would probably more user friendly to get this error with the original test.