On 12/05/2011 04:05 PM, Joern Rennecke wrote: > I find that exception handling doesn't work properly for the epiphany with > recent gcc sources (it worked in the pre-merged port with sources from July). > I suppose that is related to the change mentioned in: > http://gcc.gnu.org/ml/gcc-patches/2011-11/msg01926.html > > Looking at the cleanup-5.c failure, I see that _Unwind_ForcedUnwind > calls _Unwind_SjLj_Register, thus we never unwind to where we are supposed > to unwind. > > I can fix this in libgcc/config/epiphany/t-epiphany with: > > unwind-sjlj.o : CFLAGS += -fno-exceptions > unwind-sjlj.o : c_flags := $(filter-out -fexceptions,$(cflags)) > > Is that the right way to do it? Or should we more generally remove > -fexceptions > from the build rules for the exception handling runtime?
No. In general removing -fexceptions from the unwind routines will cause the unwind routines to fail. Both problems are almost certainly problems with Matz' scope clobbers vs exception regions. r~
