[patch, libfortran] PR33672 Additional runtime checks needed for namelist reads

[Jerry DeLisle]

Ping please.

Jerry DeLisle wrote:
> :ADDPATCH fortran:
> 
> Hi all,
> 
> The attached patch provides additional run-time checks to namelist 
> reading to assure that namelist file contents comply with the F95 standard.
> 
> Since gfortran was permitting bogus qualifiers, this could affect users 
> who may have been doing things incorrectly.  However, gfortran does 
> WRITE namelists correctly so files generated using gfortran to write 
> them will work fine.
> 
> New test case provided.
> 
> Regression tested on x86-64.
> 
> OK to commit.
> 
> Regards,
> 
> Jerry
> 
> 2007-10-07  Jerry DeLisle  <jvdelisle@gcc.gnu.org>
> 
>     PR libfortran/33672
>     * io/list_read.c (nml_parse_qualifier): Add character specific error
>     messages.  Check for proper form of sub-string qualifiers.  Return the
>     parsed_rank flag indicating a non-zero rank qualifier.
>     (nml_get_obj_data):  Count the instances of non-zero rank qualifiers.
>     Issue an error if more that one non-zero rank qualifier is found.
>