[Bug tree-optimization/46535] [4.6 Regression] Endless loop during inlining

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=46535

--- Comment #3 from Richard Guenther <rguenth at gcc dot gnu.org> 2010-11-19 
10:17:03 UTC ---
Created attachment 22455
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=22455
reduced testcase

Reduced with

Index: gcc/ipa-inline.c
===================================================================
--- gcc/ipa-inline.c    (revision 166907)
+++ gcc/ipa-inline.c    (working copy)
@@ -1175,6 +1175,7 @@ cgraph_decide_inlining_of_small_function
            {
              if (where->decl == edge->callee->decl)
                break;
+             gcc_assert (where != where->callers->caller);
              where = where->callers->caller;
            }
          if (where->global.inlined_to)