Ok, I have a stage2 compiler built with the new codegen all the way, and here are the new failing cases: 1372(normal) 2047(normal) 4030(normal) OldException001(normal) async001(normal) bug1465(normal) cabal01(normal) cabal03(normal) cgrun016(normal) cgrun045(normal) copyFile002(normal) dsrun005(normal) dsrun008(normal) exceptionsrun002(normal) ffi008(normal) getDirContents002(normal) hGetLine002(normal) hSeek004(normal) hTell002(normal) hash001(normal) ioeGetHandle001(normal) openFile002(normal) process003(normal) readwrite002(normal) simplrun010(optc) strun002(optc) Based on the composition of these bugs, my guess is that maybe the foreign function call part of the generator is still a little mushy. Cheers, Edward