>Number:         5961
>Category:       lib
>Synopsis:       [dM] <unistd.h> missing types
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    lib-bug-people (Library Bug People)
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Aug 13 09:20:01 1998
>Last-Modified:
>Originator:     der Mouse
>Organization:
	Dis-
>Release:        1.3F
>Environment:

System: NetBSD Callisto.McRCIM.McGill.EDU 1.3F NetBSD 1.3F (GENERIC) #0: Tue Aug  4 14:43:07 EDT 1998     mouse@Callisto.McRCIM.McGill.EDU:/sources/working-usr-src/sys/arch/sparc/compile/GENERIC sparc
...or any with <unistd.h> 1.66 and <sys/types.h> 1.34 (code inspection
implies <sys/types.h> 1.35, ie, -current, as well)

>Description:
	Under certain conditions, <unistd.h> uses fd_set and u_long
	without ensuring they're defined.  I haven't followed the
	twisty little maze of include files fully, but I have two test
	cases (see below).  This actually arose when someone else was
	trying to build a certain X release (not the NetBSD one) and
	asked me for help with these errors.  The problem is not
	directly X-related, though.
>How-To-Repeat:
	% echo '#include <unistd.h>' > z.c
	% cc -D_XOPEN_SOURCE=500 -c z.c
	In file included from z.c:1:
	/usr/include/unistd.h:269: syntax error before `fd_set'
	% 

	% cat > zz.c
	/* This is a very stripped-down version of the
	   offending file from the attempted X build. */
	#include <stdio.h>
	#include <ctype.h>
	#define _POSIX_SOURCE
	#include <unistd.h>
	<EOF>
	% cc -ansi -c zz.c
	In file included from zz.c:4:
	/usr/include/unistd.h:269: syntax error before `fd_set'
	/usr/include/unistd.h:300: syntax error before `u_long'
	% 

>Fix:
	Something needs to be redone in the way <unistd.h> and
	<sys/types.h> play with the various test macros like
	_POSIX_SOURCE and __STRICT_ANSI__....

					der Mouse

			       mouse@rodents.montreal.qc.ca
		     7D C8 61 52 5D E7 2D 39  4E F1 31 3E E8 B3 27 4B
>Audit-Trail:
>Unformatted: