Alternate-return arguments in argument lists are represented by a null symbol
or expression pointer. In intrinsic.c, remove_nullargs() simply removes
null-pointer symbols from the argument list handled by an intrinsic function or
subroutine. Ergo, an alternate-return actual argument in an intrinsic
subroutine call will simply be skipped over and ignored. The following code
demonstrates this:
-------------------------------------------------------------------
debian-gfortran:~/test> cat ar1.f90
program ar1
real t1
call cpu_time(*20, t1)
20 write(*,*) t1
end
debian-gfortran:~/test> ../bin-trunk/bin/gfortran ar1.f90
debian-gfortran:~/test> ./a.out
1.2997000E-02
debian-gfortran:~/test> ../bin-trunk/bin/gfortran --version
GNU Fortran 95 (GCC) 4.3.0 20061128 (experimental)
Copyright (C) 2006 Free Software Foundation, Inc.
--
Summary: Alternate return arguments in intrinsic subroutine calls
are ignored
Product: gcc
Version: 4.3.0
Status: UNCONFIRMED
Keywords: accepts-invalid
Severity: normal
Priority: P3
Component: fortran
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: brooks at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30237
