I have verified that this patch http://gcc.gnu.org/ml/gcc-patches/2007-04/msg01333.html
causes bug 31666 and bug 31681. -- Summary: [4.3 regression]: Gcc miscompiles C/C++ on Linux/x86-64 Product: gcc Version: 4.3.0 Status: UNCONFIRMED Severity: major Priority: P3 Component: target AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: hjl at lucon dot org GCC target triplet: x86_64-unknown-linux-gnu OtherBugsDependingO 31666,31681 nThis: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31989