A small test program works fine as long as you don't specify registers for local variables via asm("rn"). If registers are specified a segmentation fauft occurs (with electric fence).
-- Summary: segmentation fault when specifying registers for local variables Product: gcc Version: 3.3.3 Status: UNCONFIRMED Severity: normal Priority: P2 Component: c AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: micis at gmx dot de CC: gcc-bugs at gcc dot gnu dot org GCC host triplet: powerpc-linux GCC target triplet: powerpc-linux http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14485