>Number:         8879
>Category:       standards
>Synopsis:       _POSIX_SOURCE, fd_set, <unistd.h> etc.
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    standards-manager (NetBSD Standards Conformance bug manager)
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Nov 25 21:09:01 1999
>Last-Modified:
>Originator:     matthew green
>Organization:
people's front against (bozotic) www (softwar foundation)
>Release:        <NetBSD-current source date>today
>Environment:
	
System: NetBSD towers-of-dub.eterna.com.au 1.4M NetBSD 1.4M (_towers_) #32: Fri Nov 19 21:07:44 EST 1999 mrg@towers-of-dub.eterna.com.au:/orb/y/_towers_ alpha


>Description:

	while building GCC's `protoize' i noticed that it does this:

#define _POSIX_SOURCE
#include <sys/types.h>
#include <unistd.h>

	which leads to a compile-time error as <sys/types.h> does not
	include definitions for fd_set if _POSIX_SOURCE, however the
	prototype for select() is visible if _POSIX_SOURCE is set, and
	it uses fd_set.  <unistd.h> does not provide a select prototype
	for several cases, particularly when _POSIX_C_SOURCE is defined.

>How-To-Repeat:

	pass this code to a NetBSD compiler:

#define _POSIX_SOURCE
#include <sys/types.h>
#include <unistd.h>

>Fix:

	be consistent about what pre-processor macros do what wrt standards
	and what is visible.
>Audit-Trail:
>Unformatted: