[Bug fortran/32795] New: Leaking memory (generated prog) with type constructor & allocatable components

[burnus at gcc dot gnu dot org]

Taken from my remark to PR31320,
http://gcc.gnu.org/ml/gcc-patches/2007-07/msg01457.html

The generated executable leaks memory:

 96 bytes in 1 blocks are definitely lost in loss record 1 of 2
    at 0x4C22D06: malloc (in
/usr/lib64/valgrind/amd64-linux/vgpreload_memcheck.so)
    by 0x40122B: MAIN__ (alloc_comp_assign_2.f90:11)
    by 0x401EEB: main (fmain.c:22)

 96 bytes in 1 blocks are definitely lost in loss record 2 of 2
    at 0x4C22D06: malloc (in
/usr/lib64/valgrind/amd64-linux/vgpreload_memcheck.so)
    by 0x400BCA: MAIN__ (alloc_comp_assign_2.f90:10)
    by 0x401EEB: main (fmain.c:22)


for this stripped down test case

  type :: a
    integer, allocatable :: i(:)
  end type a
  type :: b
    type (a), allocatable :: at(:)
  end type b
  type(a) :: x(2)
  type(b) :: y(2)
  integer i
  y(1) = b ((/x(1),x(2)/))
  y(2) = b ((/x(2),x(1)/))
  forall (i=1:2) y(i) = b ((/x(i)/))
end

Paul remarked:
The testcase that you sent me breaks gfortran in other places and probably
should have a PR all of its very own.  (try the FORALL part separately).


-- 
           Summary: Leaking memory (generated prog) with type constructor &
                    allocatable components
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Keywords: wrong-code
          Severity: normal
          Priority: P3
         Component: fortran
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: burnus at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32795