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[Bug libc/284] New: POSIX.1-2001: code not compiling when -D_XOPEN_SOURCE=600 only defined


The attached code does not compile when compiled with just
c99 -c -D_XOPEN_SOURCE=600
but does when you add -D_POSIX_C_SOURCE=200112L,
i.e. 

 $ c99 -c  -D_XOPEN_SOURCE=600 -D_POSIX_C_SOURCE=200112L ts.c
-sh-2.05b$ c99 -c  -D_XOPEN_SOURCE=600  ts.c
In file included from ts.c:2:
/usr/include/pthread.h:651: error: syntax error before "clockid_t"
ts.c:28: error: syntax error before "siginfo_t"
ts.c: In function `dummy_rt_signal':
ts.c:36: error: structure has no member named `sa_sigaction'

POSIX 1003.1 volume System Interfaces Section 2.2.1 states:

Since this volume of IEEE Std 1003.1-2001 is aligned with the ISO C standard,
and since all functionality enabled by _POSIX_C_SOURCE set equal to 200112L is
enabled by _XOPEN_SOURCE set equal to 600, there should be no need to define
_POSIX_C_SOURCE if _XOPEN_SOURCE is so defined. Therefore, if _XOPEN_SOURCE is
set equal to 600 and _POSIX_C_SOURCE is set equal to 200112L, the behavior is
the same as if only _XOPEN_SOURCE is defined and set equal to 600. However,
should _POSIX_C_SOURCE be set to a value greater than 200112L, the behavior is
unspecified

-- 
           Summary: POSIX.1-2001: code not compiling when -
                    D_XOPEN_SOURCE=600 only defined
           Product: glibc
           Version: 2.3.3
            Status: NEW
          Severity: normal
          Priority: P2
         Component: libc
        AssignedTo: gotom at debian dot or dot jp
        ReportedBy: a dot josey at opengroup dot org
                CC: glibc-bugs at sources dot redhat dot com


http://sources.redhat.com/bugzilla/show_bug.cgi?id=284

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