I think this issue was already raised by you in June month. The threadid in the forum is:-- 75585, and it looks same . Could you verify so that we do not duplicate the bug in the record. It also has to do with -std=c99 disabling the use of _Decimal FP types. Well, it works without the c99 option, but should work with that too, being a part of ISO C standard.
That issue is already escalated to developer team by the engineer. Please let me know.