https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102368
Bug ID: 102368
Summary: Failure to compile program using the C_SIZEOF function
in ISO_C_BINDING
Product: gcc
Version: 11.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: longb at cray dot com
Target Milestone: ---
> cat test.f90
program main
use,intrinsic :: iso_c_binding
implicit none
character(kind=c_char, len=*), parameter :: blergh = 'abc'
print *, c_sizeof(blergh)
print *, c_sizeof(.true.)
print *, c_sizeof(5)
print *, c_sizeof(5.0)
print *, c_sizeof(5.0d0)
end program main
> gfortran test.f90
test.f90:7:18:
7 | print *, c_sizeof(blergh)
| 1
Error: 'x' argument of 'c_sizeof' intrinsic at (1) must be an interoperable
data entity: Type shall have a character length of 1
> ifort test.f90
> ./a.out
3
4
4
4
8
gfortran appears to be using pre-F08 rules for C_SIZEOF.
