[Bug fortran/57965] New: Allocation of derived type containing an allocatable character component segfaults

[Bug fortran/57965] New: Allocation of derived type containing an allocatable character component segfaults

[ole.schuett at mat dot ethz.ch]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57965

            Bug ID: 57965
           Summary: Allocation of derived type containing an allocatable
                    character component segfaults
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: ole.schuett at mat dot ethz.ch

The following program compiles fine with gfortran 4.7.2, but when executed it
segfaults.

program crash
 TYPE mytype
   CHARACTER(LEN=42), ALLOCATABLE     :: str_value
 END TYPE mytype
 TYPE(mytype), POINTER :: a => Null()
 ALLOCATE(a)
end program crash

[Bug fortran/57965] Allocation of derived type containing an allocatable character component segfaults

[burnus at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57965

Tobias Burnus <burnus at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |wrong-code
                 CC|                            |burnus at gcc dot gnu.org
         Depends on|                            |57959
      Known to fail|                            |4.5.3, 4.8.1, 4.9.0

--- Comment #1 from Tobias Burnus <burnus at gcc dot gnu.org> ---
Instead of nullifying (internally) the "str_value", the compiler tries to set
the unallocated string to the value 0 followed by space padding.

The call path is: gfc_trans_structure_assign -> gfc_trans_subcomponent_assign
-> gfc_trans_scalar_assign -> gfc_trans_string_copy.

I think the issue is effectively the same as PR57959

[Bug fortran/57965] Allocation of derived type containing an allocatable character component segfaults

[dominiq at lps dot ens.fr]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57965

Dominique d'Humieres <dominiq at lps dot ens.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2014-01-07
     Ever confirmed|0                           |1
      Known to fail|4.5.3, 4.8.1                |4.7.3, 4.8.2

--- Comment #2 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
Still present at r206385.

[Bug fortran/57965] Allocation of derived type containing an allocatable character component segfaults

[janus at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57965

Bug 57965 depends on bug 57959, which changed state.

Bug 57959 Summary: [F03] ICE with structure constructor with scalar allocatable components
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57959

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |DUPLICATE

[Bug fortran/57965] [F03] Allocation of derived type containing an allocatable character component segfaults

[dominiq at lps dot ens.fr]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=57965
Bug 57965 depends on bug 55932, which changed state.

Bug 55932 Summary: [F03] ICE for structure constructor with scalar allocatable component
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55932

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED