[Bug fortran/35064] New: gfortran internal write leaks windows handles & memory

["jpr at csc dot fi" <gcc-bugzilla@gcc.gnu.org>]

Hi,

We have a somewhat serious problem with gfortran on x86/mingw32 system:

program test
  implicit none
  character(len=10) :: string
  integer :: m,n

  do m = 1,1000
     do n = 1,10000
        write(string,*) 'nice'
     end do
     print *,'Check memory and handles and press ENTER...'
     call flush
     read(*,*)
  end do
end program test

Start the task manager and run the small program above to see memory and
windows handle usage (1 / internal write) to skyrocket.

The fortran versions i see this include the latest 4.3 & the mingw 4.2_sjlj
versions at least:

$ gfortran -v
Using built-in specs.
Target: i386-pc-mingw32
Configured with: ../trunk/configure --prefix=/mingw
--enable-languages=c,fortran --with-gmp=/home/FX/local --with-ld=/mingw/bin/ld
--with-as=/mingw/bin/as --disable-werror --enable-bootstrap --enable-threads
--disable-nls --build=i386-pc-mingw32 --enable-libgomp --disable-shared
Thread model: win32
gcc version 4.3.0 20080127 (experimental) [trunk revision 131883] (GCC) 


Regards, Juha


-- 
           Summary: gfortran internal write leaks windows handles & memory
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Severity: major
          Priority: P3
         Component: fortran
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: jpr at csc dot fi
  GCC host triplet: i386-mingw32


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35064