http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60922
Bug ID: 60922
Summary: [4.9 regression] Memory leak with INTENT(OUT) CLASS
argument w/ allocatable CLASS components
Product: gcc
Version: 4.10.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: sfilippone at uniroma2 dot it
Created attachment 32653
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=32653&action=edit
test case
Attached code runs fine with 4.8.2, but generates a memory leak with current
trunk, unless I explicitly add FINAL subroutines, which should not be necessary
for this simple case. Possibly 4.9.0 is affected as well.
Symptoms similar to PR 47637.
------------ fails with trunk -------------------
[sfilippo@epsilon IMAGING]$ gfortran -v
Using built-in specs.
COLLECT_GCC=gfortran
COLLECT_LTO_WRAPPER=/opt/gnu/4.9/libexec/gcc/x86_64-unknown-linux-gnu/4.10.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: ../gcc/configure --prefix=/opt/gnu/4.9
--enable-languages=c,c++,fortran --with-gmp=/usr/local/travel/GNU/gmp
--with-mpfr=/usr/local/travel/GNU/mpfr --with-mpc=/usr/local/travel/GNU/mpc
--with-cloog=/usr/local/travel/GNU/cloog : (reconfigured) ../gcc/configure
--prefix=/opt/gnu/4.9 --with-gmp=/usr/local/travel/GNU/gmp
--with-mpfr=/usr/local/travel/GNU/mpfr --with-mpc=/usr/local/travel/GNU/mpc
--with-cloog=/usr/local/travel/GNU/cloog --enable-languages=c,c++,fortran,lto
--no-create --no-recursion
Thread model: posix
gcc version 4.10.0 20140422 (experimental) (GCC)
[sfilippo@epsilon IMAGING]$ gfortran -o test_leak_410 -O3 test_leak.f90
[sfilippo@epsilon IMAGING]$ valgrind ./test_leak_410
==2140== Memcheck, a memory error detector
==2140== Copyright (C) 2002-2012, and GNU GPL'd, by Julian Seward et al.
==2140== Using Valgrind-3.8.1 and LibVEX; rerun with -h for copyright info
==2140== Command: ./test_leak_410
==2140==
Iteration 1
Iteration 2
==2140==
==2140== HEAP SUMMARY:
==2140== in use at exit: 6,291,552 bytes in 5 blocks
==2140== total heap usage: 32 allocs, 27 frees, 10,497,741 bytes allocated
==2140==
==2140== LEAK SUMMARY:
==2140== definitely lost: 48 bytes in 1 blocks
==2140== indirectly lost: 2,097,152 bytes in 1 blocks
==2140== possibly lost: 0 bytes in 0 blocks
==2140== still reachable: 4,194,352 bytes in 3 blocks
==2140== suppressed: 0 bytes in 0 blocks
==2140== Rerun with --leak-check=full to see details of leaked memory
==2140==
==2140== For counts of detected and suppressed errors, rerun with: -v
==2140== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 6 from 6)
--------Works with 4.8.2-----------
[sfilippo@epsilon IMAGING]$ gfortran -v
Using built-in specs.
COLLECT_GCC=gfortran
COLLECT_LTO_WRAPPER=/opt/gnu/4.8.2/libexec/gcc/x86_64-unknown-linux-gnu/4.8.2/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: ../gcc-4.8.2/configure --prefix=/opt/gnu/4.8.2
--enable-languages=c,c++,fortran --with-gmp=/usr/local/travel/GNU/gmp
--with-mpfr=/usr/local/travel/GNU/mpfr --with-mpc=/usr/local/travel/GNU/mpc
--with-cloog=/usr/local/travel/GNU/cloog
Thread model: posix
gcc version 4.8.2 (GCC)
[sfilippo@epsilon IMAGING]$ gfortran -o test_leak_482 -O3 test_leak.f90
[sfilippo@epsilon IMAGING]$ valgrind ./test_leak_482
==2122== Memcheck, a memory error detector
==2122== Copyright (C) 2002-2012, and GNU GPL'd, by Julian Seward et al.
==2122== Using Valgrind-3.8.1 and LibVEX; rerun with -h for copyright info
==2122== Command: ./test_leak_482
==2122==
Iteration 1
Iteration 2
==2122==
==2122== HEAP SUMMARY:
==2122== in use at exit: 4,194,352 bytes in 3 blocks
==2122== total heap usage: 28 allocs, 25 frees, 10,497,699 bytes allocated
==2122==
==2122== LEAK SUMMARY:
==2122== definitely lost: 0 bytes in 0 blocks
==2122== indirectly lost: 0 bytes in 0 blocks
==2122== possibly lost: 0 bytes in 0 blocks
==2122== still reachable: 4,194,352 bytes in 3 blocks
==2122== suppressed: 0 bytes in 0 blocks
==2122== Rerun with --leak-check=full to see details of leaked memory
==2122==
==2122== For counts of detected and suppressed errors, rerun with: -v
==2122== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 6 from 6)
