Re: [PATCH 3/3] reftable tests: avoid "int" overflow, use "uint64_t"

Johannes Sixt [off-list ref] writes:

Am 11.01.22 um 21:18 schrieb Taylor Blau:

quoted

On Tue, Jan 11, 2022 at 09:08:46PM +0100, Johannes Sixt wrote:

quoted

Am 11.01.22 um 20:41 schrieb Taylor Blau:

quoted

On Tue, Jan 11, 2022 at 08:31:47PM +0100, Han-Wen Nienhuys wrote:

quoted

On Tue, Jan 11, 2022 at 8:28 PM Taylor Blau [off-list ref] wrote:

quoted

In any case, you're only setting the lower half of `min` high. Maybe:

    uint64_t min = ~0ul;

yeah, that works.

I'm pretty sure this is OK on 32-bit systems, too, but confirmation from
somebody more confident than I in this area would be welcome :).

It does not work on Windows: unsigned long is 32 bits wide. You have to
make it

   uint64_t min = ~(uint64_t)0;

Perfect; this is exactly what I was looking for. Thanks!

That sounds perfect.

Actually, on second thought, UINT64_MAX would be even better.

I wouldn't introduce use of UINT64_MAX, which "git grep" does not
produce any hits for.

Unless it is very early in a development cycle, that is, in which
case we have enough time to help platforms that are not quite POSIX.