is there a table or another source which version of the ILE C compiler is supposed to adhere to which ANSI C standard? I browsed through the various ILE C/C++ PDF documents but I either found nothing or there is nothing.

The compiler coming with OS/400 V4R5 is V4R4. According to https://wiki.midrange.com/index.php/History_of_OS/400#Release_history_and_life_cycle V4R4 GA was in May 1999, so there could be either no (complete) adherence to any ANSI standard, or to standards C89 or C95. I don't think C99 was adopted, because of the small time frame between standard release and OS GA.

A hint to C95 could be the existence of a reference to "long long" in sys/types.h but there is no mentioning of it in limits.h. I wasn't able to find a stdint.h in QSYSINC.

Does anybody know?

:wq! PoC

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