[Bug fortran/64986] New: class_to_type_4.f90: valgrind error: Invalid read/write of size 8

[ubizjak at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64986

            Bug ID: 64986
           Summary: class_to_type_4.f90: valgrind error: Invalid
                    read/write of size 8
           Product: gcc
           Version: 5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: ubizjak at gmail dot com

/ssd/uros/gcc-build/gcc/gfortran -B /ssd/uros/gcc-build/gcc -B
/ssd/uros/gcc-build/x86_64-unknown-linux-gnu/libgfortran/ -L
/ssd/uros/gcc-build/x86_64-unknown-linux-gnu/libgfortran/.libs/ -L
/ssd/uros/gcc-build/x86_64-unknown-linux-gnu/libquadmath/.libs/ -O2 -g
class_to_type_4.f90

$ valgrind ./a.out
==991== Memcheck, a memory error detector
==991== Copyright (C) 2002-2013, and GNU GPL'd, by Julian Seward et al.
==991== Using Valgrind-3.10.1 and LibVEX; rerun with -h for copyright info
==991== Command: ./a.out
==991== 
==991== Invalid read of size 8
==991==    at 0x401F8F: MAIN__ (class_to_type_4.f90:58)
==991==    by 0x40076C: main (class_to_type_4.f90:63)
==991==  Address 0x51afcb8 is 8 bytes inside a block of size 104 free'd
==991==    at 0x4A07CE9: free (in
/usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==991==    by 0x401F8E: MAIN__ (class_to_type_4.f90:58)
==991==    by 0x40076C: main (class_to_type_4.f90:63)
==991== 
==991== Invalid write of size 8
==991==    at 0x401FAB: MAIN__ (class_to_type_4.f90:58)
==991==    by 0x40076C: main (class_to_type_4.f90:63)
==991==  Address 0x51afcb8 is 8 bytes inside a block of size 104 free'd
==991==    at 0x4A07CE9: free (in
/usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==991==    by 0x401F8E: MAIN__ (class_to_type_4.f90:58)
==991==    by 0x40076C: main (class_to_type_4.f90:63)
==991==