Problem compiling some 4GL sources with -a option after change Digitial Unix V4.0 1229/7.20.UE3 -> V5.1B (SP2) 2650/7.32.FC2

Hello, we're updating our hardware to some new alpha cluster. With the update there will be also a change of the OS version and the 4gl developement tools being used. In use: Digital Unix V4.0 1229 4GL 7.20.UE3 Informix 7.31.FD3 New environment: Digital Unix V5.1B (SP2) 4GL 7.32.FC2 Informix 9.40.FC3 there are some 4GL sources which doesn't compile in the new environment when using the -a flag (array bound checking). The last pass (i4glc3) which converts the "ec" file to "c" code crashes which core dump. The sources compile fine without the -a flag. We have Case 395078 open at IBM/Informix with this problem but they have problems to reproduce our testcase (it's because they haven't exactly the same environment). When trying to compile our source they seem to got into some kind of memory leak. The OS is complaining about "cannot optain swap space". But this is probably the same reason why our compile is crashing. Greetings, Joerg