Er in Microfocus Server Express 2.2 calling C functions

[Cyberkiks]

I am running a server express 2.2 run-time on a HPUX 11 O/S.
COBOL programs are linked with C functions, and in particular with OCI Oracle C functions.

I have execution problem when executing some of the C functions :
<<
error code: 114 Attempt to access item beyond bounds of memory (Signal 11)
>>

It seems that IF statements with null pointer in the C programs are the cause of this stop.
However, previous versions of Microfocus compilers were compliant with this syntax.

Do you know a run-time option or a compiler option to prevent this error ? Microfocus support is not very quick in finding something...

Thanks in advance for your help.