[Bug fortran/64230] [4.9/5 Regression] Segmentation fault - invalid memory reference in a compiler-generated finalizer for a complicated type hierarchy when a polymorphic variable is allocated in an external procedure.

Mon Dec 8 21:45:00 GMT 2014

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64230

Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2014-12-08
                 CC|                            |Joost.VandeVondele at mat dot ethz
                   |                            |.ch
      Known to work|                            |4.8.3
   Target Milestone|---                         |4.9.3
            Summary|Segmentation fault -        |[4.9/5 Regression]
                   |invalid memory reference in |Segmentation fault -
                   |a compiler-generated        |invalid memory reference in
                   |finalizer for a complicated |a compiler-generated
                   |type hierarchy when a       |finalizer for a complicated
                   |polymorphic variable is     |type hierarchy when a
                   |allocated in an external    |polymorphic variable is
                   |procedure.                  |allocated in an external
                   |                            |procedure.
     Ever confirmed|0                           |1
      Known to fail|                            |4.9.2, 5.0

--- Comment #1 from Joost VandeVondele <Joost.VandeVondele at mat dot ethz.ch> ---
yes, confirmed, also with trunk (and -fsanitize=undefined)

> gfortran -g -fno-omit-frame-pointer -fsanitize=undefined t.f90 && ./a.out
t.f90:24: runtime error: member access within null pointer of type 'struct t6'