library/718: soundcard.h defines _POSIX_SOURCE which may prevent compiles.

[Marc Milgram <milgram@openbsd.ucx.lkg.dec.com>]

>Number:         718
>Category:       library
>Synopsis:       soundcard.h defines _POSIX_SOURCE which may prevent compiles.
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    bugs
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Feb 16 15:20:01 MST 1999
>Last-Modified:
>Originator:     Marc Milgram
>Organization:
net
>Release:        2.4
>Environment:
	
	System      : OpenBSD 2.4
	Architecture: OpenBSD.i386
	Machine     : i386
>Description:
	soundcard.h defines _POSIX_SOURCE.  If soundcard.h is included
	before sys/types.h, u_char will not be defined.  If cdio.h is then
	included, the compile will not succeed as u_char is not defined.
>How-To-Repeat:
	Compile a file with the following three lines (in order):
		#include <soundcard.h>
		#include <sys/types.h>
		#include <sys/cdio.h>
>Fix:
	Remove the #define _POSIX_SOURCE from soundcard.h; or, after using
	_POSIX_SOURCE, undefine _POSIX_SOURCE if it was not previously
	defined.

>Audit-Trail:
>Unformatted: