[Bug middle-end/89303] [7/8/9 Regression] memory leak with shared_ptr and enable_shared_from_this

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89303

--- Comment #22 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
--- gcc/tree-ssa-structalias.c.jj       2019-01-01 12:37:18.738949011 +0100
+++ gcc/tree-ssa-structalias.c  2019-02-13 12:28:54.592256591 +0100
@@ -6412,7 +6412,7 @@ set_uids_in_ptset (bitmap into, bitmap f
              && bitmap_bit_p (escaped_vi->solution, i)))
        {
          pt->vars_contains_escaped = true;
-         pt->vars_contains_escaped_heap = vi->is_heap_var;
+         pt->vars_contains_escaped_heap |= vi->is_heap_var;
        }

       if (vi->is_restrict_var)

fixes this for me (though, no idea what is that other variable in the points-to
set of _16).