[Bug tree-optimization/27882] [4.1/4.2 regression] segfault in ipa-inline.c, if (e->callee->local.disregard_inline_limits

["rguenth at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

------- Comment #22 from rguenth at gcc dot gnu dot org  2006-07-19 13:19 -------
I see what the problem is.  cgraph_postorder doesn't help us if we're having a
cycle like here, so

  nnodes = cgraph_postorder (order);
  for (i = nnodes - 1; i >= 0; i--)
    {
      node = order[i];
      if (node->analyzed && node->local.inlinable
          && (node->needed || node->reachable)
          && node->callers)
        {
          if (cgraph_decide_inlining_incrementally (node, true))
            ggc_collect ();
        }
    }

after inlining into foo, which we do first, bar is no longer referenced
and is collected.  We still reference it from order[0] though.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27882