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Is there a real platform/compiler combo that defines int as 64 bits? Or is this just used to scare new programmers like myself into using int32_t where size matters (e.g. saving to a file) in order to make it “portable”?
There absolutely are such systems. There may be more in the future (or there may not). And do you want to take a bet on what
intwill be on a possible 128-bit architecture?Wikipedia has an incomplete-but-useful rundown: http://en.wikipedia.org/wiki/64-bit#64-bit_data_models