>> apps/enc.c:568:54: error: format specifies type 'uintmax_t' (aka
>> 'unsigned long') but the argument has type 'uint64_t' (aka 'unsigned
>> long long') [-Werror,-Wformat]
>> BIO_printf(bio_err, "bytes written: %8ju\n",
>> ~~~~ ^~~~~~~~~~~~~~~~~~~~~~~
>> 2 errors generated.
>> The thing is though this is *our* BIO_printf, and we do seem to expect a
>> uint64_t for a "%ju". So I'm not sure how to fix that.
> I'd suggest -Wno-format. With rationale that a) Xcode is arguably
> somewhat unreasonable, b) we can rely on Linux builds to catch warnings
> that actually matter.
Another possibility *could* be suppressing corresponding __attribute__
in bio.h, but it's public header, so question would be if change can be
justified in minor release. Just in case, suppress specifically for
Xcode [which would cover even iOS].
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