[Bug fortran/106065] New: Crash when reading extended derived type array in namelist

[Bug fortran/106065] New: Crash when reading extended derived type array in namelist

[philippe.wautelet at aero dot obs-mip.fr]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106065

            Bug ID: 106065
           Summary: Crash when reading extended derived type array in
                    namelist
           Product: gcc
           Version: 12.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: philippe.wautelet at aero dot obs-mip.fr
  Target Milestone: ---

Created attachment 53195
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=53195&action=edit
Reproducer

I get a crash when using an array of extended derived types.
If I define an other type containing the same information but not extended, the
problem disappears.

See the attached source:
> gfortran type_extends_nml.f90 ;./a.out

&NAM_BAL_NE
 DATE_TIME_NE(1)%NYEAR=       2022,
 DATE_TIME_NE(1)%NMONTH=          0,
 DATE_TIME_NE(1)%NDAY=          0,
 DATE_TIME_NE(1)%XTIME=  0.00000000    ,
 DATE_TIME_NE(2)%NYEAR=          0,
 DATE_TIME_NE(2)%NMONTH=          0,
 DATE_TIME_NE(2)%NDAY=          0,
 DATE_TIME_NE(2)%XTIME=  1.23399997    ,
 /
At line 36 of file type_extends_nml.f90
Fortran runtime error: Cannot match namelist object name 2022

I tested with several versions of gfortran from version 5.5.0 to 12.1.0. All
failed.

[Bug fortran/106065] Crash when reading extended derived type array in namelist

[jvdelisle at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106065

Jerry DeLisle <jvdelisle at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2022-06-24
                 CC|                            |jvdelisle at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #1 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
Well, its not really a 'crash', but certainly not correct.

Comment out the READ statements and look at the result:

$ ./a.out 
&NAM_BAL_NE
 DATE_TIME_NE(1)%NYEAR=0          ,
 DATE_TIME_NE(1)%NMONTH=0          ,
 DATE_TIME_NE(1)%NDAY=0          ,
 DATE_TIME_NE(1)%XTIME=  0.00000000    ,
 DATE_TIME_NE(2)%NYEAR=0          ,
 DATE_TIME_NE(2)%NMONTH=0          ,
 DATE_TIME_NE(2)%NDAY=0          ,
 DATE_TIME_NE(2)%XTIME=  0.00000000    ,
 /
&NAM_BAL_E
 DATE_TIME_E%TDATE%NYEAR=0          ,
 DATE_TIME_E%TDATE%NMONTH=0          ,
 DATE_TIME_E%TDATE%NDAY=0          ,
 DATE_TIME_E%YTIME=  0.00000000    ,
 /

The extended type is not even being seen as an array

[Bug fortran/106065] Crash when reading extended derived type array in namelist

[jvdelisle at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106065

--- Comment #2 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
I was a bit curious to see what flang would do with the test case.  It gives
the exact same error message as gfortran, word for word.

[Bug fortran/106065] Crash when reading extended derived type array in namelist

[philippe.wautelet at aero dot obs-mip.fr]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106065

philippe.wautelet at aero dot obs-mip.fr changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Version|12.1.0                      |13.2.0

--- Comment #3 from philippe.wautelet at aero dot obs-mip.fr ---
Hello,

The problem is still there in the 13.2.0 version. Any update?

Thanks,