[Bug tree-optimization/44964] [4.6 Regression] ICE: SIGSEGV in gimple_default_def (tree-dfa.c:539) with -fkeep-inline-functions

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44964

--- Comment #6 from Richard Guenther <rguenth at gcc dot gnu.org> 2010-11-10 
14:06:04 UTC ---
It is caused by breaking edges to callees for always-inline functions when
topologically sorting the cgraph.  And cgraph_flatten misses a check
for matching SSA form like other inliners have.

I have a patch.