https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93733
--- Comment #8 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
The problem is deeper than expected. Consider
! { dg-options "-std=f2008" }
program g0d_ilc
character(4) :: fmt="(g0)"
character(6) :: fmt2="(g0.2)"
!F2008:
write(*, fmt) 23
write(*, fmt) .true.
write(*, fmt) 'hello'
!F2018:
write(*, fmt2) -23 ! { dg-error "Fortran 2018: .G0.d. in format" }
write(*, fmt2) .true. ! { dg-error "Fortran 2018: .G0.d. in format" }
write(*, fmt2) 'hello' ! { dg-error "Fortran 2018: .G0.d. in format" }
end
The test compiled with -std=f95 should give a run time error, but does not.
