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From: "hj8758558 at gmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug fortran/101627] New: List-directed read with trailing
 characters after quotes
Date: Mon, 26 Jul 2021 17:08:29 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D101627

            Bug ID: 101627
           Summary: List-directed read with trailing characters after
                    quotes
           Product: gcc
           Version: 11.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: hj8758558 at gmail dot com
  Target Milestone: ---

When reading a string delimited by single quotes, but followed by a non-bla=
nk
character, gfortran takes the "err" branch. This is in contrast to ifort,
nagfor, and flang, which read the string within the quotes and ignore the
trailing character(s).

Is gfortran's behavior intended?



$ cat test.f90
program test=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20

   character(len=3D6) :: input_str =3D "'abc'a"
   character(len=3D6) :: output_str=20=20=20=20=20=20=20=20=20=20

   read (input_str, *, err=3D77) output_str=20=20

   stop 'No read error'=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20

77 continue=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20
   stop 'Read error'=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20

end program test=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20


$ gfortran test.f90 && ./a.out
STOP Read error=