Re: MinGW / Windows / printf format specifiers

On 19 February 2016 at 12:15, Chapman Flack <chap(at)anastigmatix(dot)net> wrote:

>
> The cause seems to be that Windows conventions have int = long = int32
> (even on 64-bit platforms) and only 'long long' = int64.

Yes, it's an LLP64 platform.

https://en.wikipedia.org/wiki/64-bit_computing

> The Java JNI
> headers of course know this, so they type jlong as 'long long', while
> jint they type as 'long' - curiously, because they could just call it
> int and get the same width. Maybe a habit from a 16-bit C environment?
>

They should be using the (u)int(nn)_t typedefs like int64_t, but some
compilers lag in their support for them.

> Have issues like this been dealt with in PostgreSQL code before, and did
> a favorite approach emerge?
> <http://www.postgresql.org/mailpref/pgsql-hackers>

INT64_FORMAT and UINT64_FORMAT

src/include/c.h

git grep INT64_FORMAT

--
Craig Ringer http://www.2ndQuadrant.com/
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