Aleksander Alekseev wrote:
> Please note that these changes:
>
> ```
> -#define LARGE_OFF_T (((off_t) 1 << 62) - 1 + ((off_t) 1 << 62))
> +#define LARGE_OFF_T ((((off_t) 1 << 31) << 31) - 1 + (((off_t) 1 <<
> 31) << 31))
> ```
>
> ... were generated but `autoreconf -iv`. I was not sure what to do
> about them. Eventually I decided to keep them. Still these changes could
> be safely discarded.
I have noticed these while messing with configure.in too. These are
generated by an autoconf as patched by Debian; see
http://bugs.debian.org/742780
This is said to fix undefined behavior when off_t is 32 bits.
They are not present in stock GNU autoconf 2.69 nor are in autoconf's
git repo. I think we should continue to use the output of stock,
unpatched autoconf.
--
Álvaro Herrera http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
