glibc-2.0.94: <sys/sem.h> doesn't include union semun

[Ulrich Drepper]

Horst von Brand <vonbrand@sleipnir.valparaiso.cl> writes:

> This is what semctl(2) seems to specify, anyway. This makes util-linux-2.8b
> fail its build. Andries.Brouwer@cwi.nl told me <sys/sem_buf.h> (which
> contains the definition) is not mentioned by either SYSV or X/OPEN.

union semun must be specified by the application.  It was a bug that
former glibc versions defined it.

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