From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugzilla@gcc.gnu.org>
Received: by sourceware.org (Postfix, from userid 48)
	id 0BFB43858D37; Fri, 28 Apr 2023 08:20:05 +0000 (GMT)
DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 0BFB43858D37
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org;
	s=default; t=1682670005;
	bh=Wpftd496uqfxPktxu5ZY4f6wCmcxjsnWszw3N8ZB5u0=;
	h=From:To:Subject:Date:From;
	b=g8G260YTizPT3g4mGhh5prOzue3lEpKxgI1q5kIJEhqPYRCRngMhs3Y382F0I2iIx
	 74GSPiXzHobFEmAC4Mg/y6uy2bKEX0hAOOLcJZkUNbQVcmYwNyK8+TuFpAzSiNTe4k
	 5xKEpLc+vOQxDZhTcBN20iDqYGhXrXcxvmj1Ioc8=
From: "john.harper at vuw dot ac.nz" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/109662] New: bad namelist input but gfortran accepted
 it
Date: Fri, 28 Apr 2023 08:20:03 +0000
X-Bugzilla-Reason: CC
X-Bugzilla-Type: new
X-Bugzilla-Watch-Reason: None
X-Bugzilla-Product: gcc
X-Bugzilla-Component: fortran
X-Bugzilla-Version: 12.1.0
X-Bugzilla-Keywords: 
X-Bugzilla-Severity: normal
X-Bugzilla-Who: john.harper at vuw dot ac.nz
X-Bugzilla-Status: UNCONFIRMED
X-Bugzilla-Resolution: 
X-Bugzilla-Priority: P3
X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org
X-Bugzilla-Target-Milestone: ---
X-Bugzilla-Flags: 
X-Bugzilla-Changed-Fields: bug_id short_desc product version bug_status
 bug_severity priority component assigned_to reporter target_milestone
Message-ID: <bug-109662-4@http.gcc.gnu.org/bugzilla/>
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/
Auto-Submitted: auto-generated
MIME-Version: 1.0
List-Id: <gcc-bugs.sourceware.org>

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D109662

            Bug ID: 109662
           Summary: bad namelist input but gfortran accepted it
           Product: gcc
           Version: 12.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: john.harper at vuw dot ac.nz
  Target Milestone: ---

This program compiled and ran with the std=3Df2018 option though it has a c=
omma
between the namelist group name and the variable name, which I and ifort
believe is non-standard. The program:

program testnmlread
  use iso_fortran_env,only: compiler_version,compiler_options,output_unit
  implicit none
  character(16) :: list =3D '&stuff, n =3D 666/'
  integer       :: n
  namelist/stuff/n
  print *,'Compiler version =3D ',trim(compiler_version())
  print *,'Compiler options =3D ',trim(compiler_options())
  read(list,nml=3Dstuff)
  write(output_unit,nml=3Dstuff)
end program testnmlread

The output:

 Compiler version =3D GCC version 12.1.0
 Compiler options =3D -mtune=3Dgeneric -march=3Dx86-64 -g -std=3Df2018
-fpre-include=3D/usr/include/finclude/math-vector-fortran.h
&STUFF
 N=3D666        ,
 /

Result of gfortran -v :

Using built-in specs.
COLLECT_GCC=3Dgfortran-12
COLLECT_LTO_WRAPPER=3D/usr/lib/gcc/x86_64-linux-gnu/12/lto-wrapper
OFFLOAD_TARGET_NAMES=3Dnvptx-none:amdgcn-amdhsa
OFFLOAD_TARGET_DEFAULT=3D1
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion=3D'Ubuntu
12.1.0-2ubuntu1~22.04' --with-bugurl=3Dfile:///usr/share/doc/gcc-12/README.=
Bugs
--enable-languages=3Dc,ada,c++,go,d,fortran,objc,obj-c++,m2 --prefix=3D/usr
--with-gcc-major-version-only --program-suffix=3D-12
--program-prefix=3Dx86_64-linux-gnu- --enable-shared --enable-linker-build-=
id
--libexecdir=3D/usr/lib --without-included-gettext --enable-threads=3Dposix
--libdir=3D/usr/lib --enable-nls --enable-clocale=3Dgnu --enable-libstdcxx-=
debug
--enable-libstdcxx-time=3Dyes --with-default-libstdcxx-abi=3Dnew
--enable-gnu-unique-object --disable-vtable-verify --enable-plugin
--enable-default-pie --with-system-zlib --enable-libphobos-checking=3Drelea=
se
--with-target-system-zlib=3Dauto --enable-objc-gc=3Dauto --enable-multiarch
--disable-werror --enable-cet --with-arch-32=3Di686 --with-abi=3Dm64
--with-multilib-list=3Dm32,m64,mx32 --enable-multilib --with-tune=3Dgeneric
--enable-offload-targets=3Dnvptx-none=3D/build/gcc-12-sZcx2y/gcc-12-12.1.0/=
debian/tmp-nvptx/usr,amdgcn-amdhsa=3D/build/gcc-12-sZcx2y/gcc-12-12.1.0/deb=
ian/tmp-gcn/usr
--enable-offload-defaulted --without-cuda-driver --enable-checking=3Drelease
--build=3Dx86_64-linux-gnu --host=3Dx86_64-linux-gnu --target=3Dx86_64-linu=
x-gnu
Thread model: posix
Supported LTO compression algorithms: zlib zstd
gcc version 12.1.0 (Ubuntu 12.1.0-2ubuntu1~22.04)=