http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58139
--- Comment #14 from Peter Bergner <bergner at gcc dot gnu.org> --- (In reply to Maciej W. Rozycki from comment #13) > This breaks Power SPE targets, at least the Linux OS, almost surely EABI > too. Seen in 4.8 powerpc-linux-gnu g++ and libstdc++ testing as some 700 > regressions e.g. with these compiler options: > > -mcpu=8540 -mfloat-gprs=single -mspe=yes -mabi=spe > > The cause is a DWARF2 unwinder abort triggered by: > > gcc_assert (size == sizeof(_Unwind_Word)); > > in _Unwind_SetSpColumn and the cause is with this change applied `size' > is 8 whereas `sizeof(_Unwind_Word)' is 4. Previously `size' was 4. > > For 4.8 please revert unless a better fix can be made within the > available time frame. Let me know if I can assist with testing. My guess is that the fix is correct and is just exposing a latent bug for SPE. Can you attach a preprocessed source file that exibits the ICE and I'll have a look.
