https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87000
--- Comment #2 from Gavin Ridley <gavin.keith.ridley at gmail dot com> ---
OK, I see, thank you. I believe you're right on that. When I tried to make this
example, I cut out an important part that seems to cause the difference between
gcc compiler versions. This code:
program asdf
use iso_fortran_env
implicit none
real(real64), dimension(:), allocatable :: arr
allocate(arr(-5:10))
print *, 'lbound = ', lbound(arr)
print *, 'ubound = ', ubound(arr)
call boundprinter(arr)
contains
subroutine boundprinter(x)
class(*), intent(in), dimension(:) :: x
print *, 'lbound = ', lbound(x)
print *, 'ubound = ', ubound(x)
endsubroutine boundprinter
endprogram asdf
Gives the difference I'm looking to illustrate. Insteady of specifying the type
of the array, this instead has the polymorphic class(*) which gives lbound=-5
on gcc 4.9.3 but gives lbound=1 on gcc 7.3.1. Which gcc is correct?
