[Bug fortran/25087] better diagnostic needed

Tue Nov 29 12:00:00 GMT 2005

------- Comment #2 from eedelman at gcc dot gnu dot org  2005-11-29 12:00 -------
Reduced testcase:

SUBROUTINE s(n)
 CHARACTER(LEN=n), EXTERNAL :: a
 write(6,*) a(n)
END SUBROUTINE s

The problem, unless I'm missing something, is that the external function a
would need an explicit interface. From the draft F2003 standard, 12.3.1.1:

"A procedure [...] shall have an explicit interface if it is referenced and

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25087