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Subject: [Bug fortran/55197] Use statement for omp_lib causes ICE
Date: Sat, 03 Nov 2012 23:28:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55197

Tobias Burnus <burnus at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |ice-on-valid-code
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2012-11-03
                 CC|                            |burnus at gcc dot gnu.org
     Ever Confirmed|0                           |1

--- Comment #1 from Tobias Burnus <burnus at gcc dot gnu.org> 2012-11-03 23:28:00 UTC ---
Confirmed. The problem is that we do in module.c's gfc_use_modules:

      gfc_use_module (module_list);
      if (module_list->intrinsic)
        free_rename (module_list->rename);

But then in trans-decl.c's gfc_trans_use_stmts:

      for (rent = use_stmt->rename; rent; rent = rent->next)

While freeing the memory is probably fine for build-in intrinsic modules like
ISO_Fortran_env and ISO_C_Binding; however, doing so for intrinsic modules
which are loaded for a file is wrong. (Side note: We should free the rename
list in trans-decl.c to avoid mem leaks.)