[Bug fortran/16485] New: Private subroutines from different modules collide during linking.

[olchansk at panix dot com]

gfortran version "gcc version 3.5.0 20040710 (experimental)" generates incorrect
names for private functions inside modules, causing link-time collisions between
same-named private functions from different modules: (this problem prevents this
example from even assembling):

[olchansk@tw15 gfortran_test]$ cat test_ldcollide.f90
module foo
  private
contains
  subroutine sub
  end subroutine sub
end module foo
module bar
  private
contains
  subroutine sub
  end subroutine sub
end module bar
[olchansk@tw15 gfortran_test]$ make test_ldcollide.o
/triumfcs/trshare/olchansk/gcc-tree-ssa/install/bin/gfortran -x f95 -c  -o
test_ldcollide.o -O2 -g -Wall -Waliasing -Wline-truncation -Wsurprising
-Wunused-labels -fPIC -ffixed-line-length-132 test_ldcollide.f90
/tmp/ccAzTdiq.s: Assembler messages:
/tmp/ccAzTdiq.s:30: Error: symbol `sub_' is already defined
make: *** [test_ldcollide.o] Error 1

K.O.

-- 
           Summary: Private subroutines from different modules collide
                    during linking.
           Product: gcc
           Version: 3.5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: fortran
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: olchansk at panix dot com
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16485