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From: "burnus at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/115553] New: Memory leak in openmp.cc's
 gfc_free_expr_list - gfc_expr not freed
Date: Wed, 19 Jun 2024 20:08:38 +0000
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X-Bugzilla-Version: 15.0
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D115553

            Bug ID: 115553
           Summary: Memory leak in openmp.cc's gfc_free_expr_list -
                    gfc_expr not freed
           Product: gcc
           Version: 15.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: burnus at gcc dot gnu.org
                CC: jakub at gcc dot gnu.org
  Target Milestone: ---

It looks as if a 'gfc_free_expr (list->expr)' is missing before the 'free' =
call
in:

However, I have not checked whether there are cases where only the list nee=
ds
to be removed and the gfc_expr is used (and later freed elsewhere).

* * *

/* Free expression list. */
void
gfc_free_expr_list (gfc_expr_list *list)
{
  gfc_expr_list *n;

  for (; list; list =3D n)
    {
      n =3D list->next;
      free (list);
    }
}=