https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65925
Bug ID: 65925
Summary: Memory leak with source allocation nested inside the
source of another source allocation
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: damian at sourceryinstitute dot org
Target Milestone: ---
Valgrind reports a memory leak with the code below for gfortran 6.0.0 (and 4.10
and 5.0.0):
$ cat reduced-gforLeak.f90
type IndexSpace
end type
type,extends(IndexSpace) :: OuterProductSpace
end type
type base
class(IndexSpace),allocatable :: b
end type
type,extends(base) :: subdata
endtype
class(base),allocatable :: d
allocate(d,source = newData())
contains
type(subdata) function newData()
allocate(newData%base%b,source = OuterProductSpace())
end function
end
$ gfortran reduced-gforLeak.f90
$ valgrind ./a.out
==3960== Memcheck, a memory error detector
==3960== Copyright (C) 2002-2011, and GNU GPL'd, by Julian Seward et al.
==3960== Using Valgrind-3.7.0 and LibVEX; rerun with -h for copyright info
==3960== Command: ./a.out
==3960==
==3960==
==3960== HEAP SUMMARY:
==3960== in use at exit: 17 bytes in 3 blocks
==3960== total heap usage: 28 allocs, 25 frees, 12,692 bytes allocated
==3960==
==3960== LEAK SUMMARY:
==3960== definitely lost: 17 bytes in 2 blocks
==3960== indirectly lost: 0 bytes in 1 blocks
==3960== possibly lost: 0 bytes in 0 blocks
==3960== still reachable: 0 bytes in 0 blocks
==3960== suppressed: 0 bytes in 0 blocks
==3960== Rerun with --leak-check=full to see details of leaked memory
==3960==
==3960== For counts of detected and suppressed errors, rerun with: -v
==3960== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 2 from 2)
$ gfortran --version
GNU Fortran (GCC) 6.0.0 20150422 (experimental)
