port to PDOS (especially mainframe)

[Terry Reedy]

On 4/16/2021 4:02 PM, Paul Edwards wrote:
> On Saturday, April 17, 2021 at 5:13:31 AM UTC+10, Paul Rubin wrote:
>> Paul Edwards <muta... at gmail.com> writes:
>>> I have succeeded in producing a Python 3.3 executable despite being
>>> built with a C library that only supports C90.

Not surprising. CPython was restricted to C90 until fairly recently to 
be portable across major systems, including Windows with MS Visual C. 
At least some C99 features are used now and more are being comtemplated.

-- 
Terry Jan Reedy