Anto,
./pypy-c --jit enable_opts=intbounds:rewrite:virtualize:string:heap:ffi:unroll
the line above is equivalent of a plain pypy-c, because it enables all optimizations. Try to remove some of them and see if you still get the crash.
there are several combinations that work with the pre-built pypy but not with my local version (except one: if only intbounds is selected, neither works). The largest set of combinations that does work is: intbounds:rewrite:virtualize:ffi Several others don't crash, but raise (and again, not in the pre-built): RPython traceback: File "implement_18.c", line 205492, in optimize_loop File "implement_19.c", line 86345, in _optimize_loop File "implement_19.c", line 202071, in UnrollOptimizer_propagate_all_forward File "implement_19.c", line 248573, in Optimizer_reconstruct_for_next_iteration File "implement_19.c", line 247560, in Optimization_reconstruct_for_next_iteration Fatal RPython error: NotImplementedError Does any of that ring a bell? Changing gcc didn't work. For now, I'll live with it with the lower set of options. It may after all still be something specific to my box which I intend to replace sometime soon. Thanks, Wim -- WLavrijsen@lbl.gov -- +1 (510) 486 6411 -- www.lavrijsen.net