Hello everyone, I'm trying to get my head around PyPy (hoping maybe to participate in the PyPy sprint at EuroPython), and following the getting-started guide on the Web site. Translating pypy with the C backend worked with no problems on my machine, but neither the JVM nor CLI backends work. (I tried both the pypy-dist version and the SVN trunk.) The stacktrace for the error is: Traceback (most recent call last): File "translate.py", line 273, in main drv.proceed(goals) File "C:\Src\pypy\pypy\translator\driver.py", line 704, in proceed return self._execute(goals, task_skip = self._maybe_skip()) File "C:\Src\pypy\pypy\translator\tool\taskengine.py", line 116, in _execute res = self._do(goal, taskcallable, *args, **kwds) File "C:\Src\pypy\pypy\translator\driver.py", line 267, in _do res = func() File "C:\Src\pypy\pypy\translator\driver.py", line 395, in task_backendopt_ootype backend_optimizations(self.translator) File "C:\Src\pypy\pypy\translator\backendopt\all.py", line 80, in backend_optimizations inline_heuristic=heuristic) File "C:\Src\pypy\pypy\translator\backendopt\all.py", line 156, in inline_malloc_removal_phase call_count_pred=call_count_pred) File "C:\Src\pypy\pypy\translator\backendopt\inline.py", line 779, in auto_inline_graphs call_count_pred=call_count_pred) File "C:\Src\pypy\pypy\translator\backendopt\inline.py", line 750, in auto_inlining call_count_pred, cleanup=False) File "C:\Src\pypy\pypy\translator\backendopt\inline.py", line 108, in inline_function return inliner.inline_all() File "C:\Src\pypy\pypy\translator\backendopt\inline.py", line 217, in inline_all self.inline_once(block, index_operation) File "C:\Src\pypy\pypy\translator\backendopt\inline.py", line 244, in inline_once self.translator, self.raise_analyzer): File "C:\Src\pypy\pypy\translator\backendopt\inline.py", line 160, in any_call_to_raising_graphs if does_raise_directly(graph_or_something, raise_analyzer): File "C:\Src\pypy\pypy\translator\backendopt\inline.py", line 153, in does_raise_directly if raise_analyzer.can_raise(op): File "C:\Src\pypy\pypy\translator\backendopt\canraise.py", line 33, in can_raise return self.analyze(op, seen) File "C:\Src\pypy\pypy\translator\backendopt\graphanalyze.py", line 38, in analyze return self.analyze_external_call(op) File "C:\Src\pypy\pypy\translator\backendopt\canraise.py", line 21, in analyze_external_call fnobj = deref(op.args[0].value) File "C:\Src\pypy\pypy\rpython\typesystem.py", line 153, in deref assert isinstance(ootype.typeOf(obj), ootype.OOType) AssertionError When I evaluate 'obj' with the pdb, I get: (Pdb+) p obj <* fn CryptGenRandom> As far as I understand, the problem happens because the 'posix' module under Win32 implements 'urandom' by calling the native CryptGetRandom function through rffi, but there is no mapping for this call under the JVM and CLI backends. What would be the proper way to fix this problem? (Or maybe I'm doing something that's not supposed to work at all at this stage of the project?) (Looks like my question should be at least partly answered by the "OO backends" section of the document at http://codespeak.net/pypy/dist/pypy/doc/rffi.html but unfortunately all it says is "XXX to be written".) Thanks in advance for your help! Dmitry