seen with the 4.3 branch and trunk 20080711 on i486-linux-gnu, the following preprocessed source doesn't finish to build after 120 cpu minutes. works with 4.2.4, or with -O2.
-- Summary: [4.3/4.4 regression] endless (?) loop building with -O3 Product: gcc Version: 4.3.1 Status: UNCONFIRMED Severity: normal Priority: P3 Component: regression AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: doko at ubuntu dot com http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36811