The fix for PR14784 causes misscompilation of gcc in spec2006, at -O2. Some discussion of the problem is in PR14784, I am moving it to a separate bug report.
-- Summary: Misscompilation of spec2006 gcc Product: gcc Version: 4.3.0 Status: UNCONFIRMED Keywords: wrong-code, alias Severity: normal Priority: P3 Component: tree-optimization AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: rakdver at gcc dot gnu dot org GCC host triplet: i686-pc-linux,x86_64-pc-linux http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29680