Building kdebase 4 with current gcc 4.3 snapshots causes several important applications (e.g. plasma, konsole) to crash on startup.
Several files are involved; rebuilding the workspace/libs/plasma directory with an older gcc 4.3 snapshot (or gcc 4.2.x) fixes plasma startup. Last known good gcc 4.3 snapshot: SVN rev. 129944 No simple testcase found yet. -- Summary: [4.3 regression] recent gcc 4.3 snapshots miscompile KDE 4 Product: gcc Version: 4.3.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: middle-end AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: bero at arklinux dot org GCC build triplet: i686-pc-linux-gnu GCC host triplet: i686-pc-linux-gnu GCC target triplet: i686-pc-linux-gnu http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34570