https://gcc.gnu.org/bugzilla/show_bug.cgi?id=50551
--- Comment #3 from Vittorio Zecca <zeccav at gmail dot com> ---
Still in trunk.
The NAG nagfor and Intel ifort compilers detect the issue.
gfortran -S gfbug89.f
[vitti f95]$nagfor -S -w gfbug89.f
NAG Fortran Compiler Release 7.0(Yurakucho) Build 7042
Error: gfbug89.f, line 10: Argumentless NULL() cannot be used with
assumed-length dummy
[NAG Fortran Compiler error termination, 1 error]
[vitti f95]$ifort -S -w gfbug89.f
gfbug89.f(10): error #8613: Intrinsic NULL() must have the MOLD argument if it
is an actual argument corresponding to a dummy argument with assumed type
parameters.
call sub(null()) ! null() cannot be used with assumed length dummy
argument
---------------^
compilation aborted for gfbug89.f (code 1)
