[ANN][RFC] cygipc-1.11 at cygutils

[Horak Daniel]

> What does postgresql do if there is no system-wide union semun?

There is a check for union semun in configure and then if it does not
find a system wide union semun it defines its own as

#ifndef HAVE_UNION_SEMUN
union semun
{
        int                     val;
        struct semid_ds *buf;
        unsigned short *array;
};
#endif

The check is in configure for many years :-) So I it is required for
other platforms than Cygwin too.

			Dan

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