[Bug fortran/48700] New: [OOP] memory leak with MOVE_ALLOC of polymorphic variables

["sfilippone at uniroma2 dot it" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48700

           Summary: [OOP] memory leak with  MOVE_ALLOC  of polymorphic
                    variables
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: sfilippone@uniroma2.it


Created attachment 24058
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=24058
test-case

Running the attached test case through valgrind gives memory leak warnings,
both with current trunk and 4.6.0

----------------------------------------------------------------------------
[sfilippo@donald bug31]$ gfortran -v
Using built-in specs.
COLLECT_GCC=gfortran
COLLECT_LTO_WRAPPER=/usr/local/gnu47/libexec/gcc/x86_64-unknown-linux-gnu/4.7.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: ../gcc/configure --prefix=/usr/local/gnu47
--enable-languages=c,c++,fortran --with-gmp=/home/travel/GNUBUILD/gmp
--with-mpfr=/home/travel/GNUBUILD/mpfr --with-mpc=/home/travel/GNUBUILD/mpc :
(reconfigured) ../gcc/configure --prefix=/usr/local/gnu47
--enable-languages=c,c++,fortran --with-gmp=/home/travel/GNUBUILD/gmp
--with-mpfr=/home/travel/GNUBUILD/mpfr --with-mpc=/home/travel/GNUBUILD/mpc :
(reconfigured) ../gcc/configure --prefix=/usr/local/gnu47
--enable-languages=c,c++,fortran --with-gmp=/home/travel/GNUBUILD/gmp
--with-mpfr=/home/travel/GNUBUILD/mpfr --with-mpc=/home/travel/GNUBUILD/mpc
Thread model: posix
gcc version 4.7.0 20110418 (experimental) (GCC) 
[sfilippo@donald bug31]$ gfortran -o testmv3 testmv3.f90 -ggdb 
[sfilippo@donald bug31]$ valgrind --leak-check=full ./testmv3
==25909== Memcheck, a memory error detector
==25909== Copyright (C) 2002-2009, and GNU GPL'd, by Julian Seward et al.
==25909== Using Valgrind-3.5.0 and LibVEX; rerun with -h for copyright info
==25909== Command: ./testmv3
==25909== 
==25909== 
==25909== HEAP SUMMARY:
==25909==     in use at exit: 216 bytes in 4 blocks
==25909==   total heap usage: 26 allocs, 22 frees, 12,368 bytes allocated
==25909== 
==25909== 40 bytes in 1 blocks are definitely lost in loss record 3 of 4
==25909==    at 0x4A05E46: malloc (vg_replace_malloc.c:195)
==25909==    by 0x401425: MAIN__ (testmv3.f90:37)
==25909==    by 0x401729: main (testmv3.f90:22)
==25909== 
==25909== 176 (96 direct, 80 indirect) bytes in 1 blocks are definitely lost in
loss record 4 of 4
==25909==    at 0x4A05E46: malloc (vg_replace_malloc.c:195)
==25909==    by 0x400DCF: MAIN__ (testmv3.f90:30)
==25909==    by 0x401729: main (testmv3.f90:22)
==25909== 
==25909== LEAK SUMMARY:
==25909==    definitely lost: 136 bytes in 2 blocks
==25909==    indirectly lost: 80 bytes in 2 blocks
==25909==      possibly lost: 0 bytes in 0 blocks
==25909==    still reachable: 0 bytes in 0 blocks
==25909==         suppressed: 0 bytes in 0 blocks
==25909== 
==25909== For counts of detected and suppressed errors, rerun with: -v
==25909== ERROR SUMMARY: 2 errors from 2 contexts (suppressed: 6 from 6)