http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53174
H.J. Lu <hjl.tools at gmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2012-05-01 CC| |jakub at gcc dot gnu.org Ever Confirmed|0 |1 --- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> 2012-05-01 00:53:34 UTC --- It is very likely caused by tree-predcom.c change in revision 170050: http://gcc.gnu.org/ml/gcc-cvs/2011-02/msg00595.html