commit 3b566046c3e8cb252f4c0ab7b6041fef5098f1a5

Author: Siddhesh Poyarekar <siddhesh@redhat.com>

Date:   Mon Dec 29 17:39:30 2014 +0530

    Add _POSIX namespace SYSCONF macros to posix-conf-vars.list

    This fixes the remaining -Wundef warnings.  Tested on x86_64.

            * posix/posix-conf-vars.list: Add _POSIX sysconf namespace.

            * sysdeps/posix/sysconf.c: Include posix-conf-vars.h.

            (__sysconf): Use CONF_IS_* macros.

diff --git a/posix/posix-conf-vars.list b/posix/posix-conf-vars.list

index 8f308c216626c59c..3e7e7cdaa9c46c85 100644

--- a/posix/posix-conf-vars.list

+++ b/posix/posix-conf-vars.list

@@ -14,6 +14,96 @@ SPEC POSIX {

   V7_LPBIG_OFFBIG

 }

+SYSCONF POSIX {

+  ADVISORY_INFO

+  ARG_MAX

+  ASYNCHRONOUS_IO

+  BARRIERS

+  BASE

+  CHILD_MAX

+  C_LANG_SUPPORT

+  C_LANG_SUPPORT_R

+  CLOCK_SELECTION

+  CPUTIME

+  DEVICE_IO

+  DEVICE_SPECIFIC

+  DEVICE_SPECIFIC_R

+  FD_MGMT

+  FIFO

+  FILE_ATTRIBUTES

+  FILE_LOCKING

+  FILE_SYSTEM

+  FSYNC

+  JOB_CONTROL

+  MAPPED_FILES

+  MEMLOCK

+  MEMLOCK_RANGE

+  MEMORY_PROTECTION

+  MESSAGE_PASSING

+  MONOTONIC_CLOCK

+  MULTI_PROCESS

+  NETWORKING

+  NGROUPS_MAX

+  OPEN_MAX

+  PII

+  PII_INTERNET

+  PII_INTERNET_DGRAM

+  PII_INTERNET_STREAM

+  PII_OSI

+  PII_OSI_CLTS

+  PII_OSI_COTS

+  PII_OSI_M

+  PII_SOCKET

+  PII_XTI

+  PIPE

+  POLL

+  PRIORITIZED_IO

+  PRIORITY_SCHEDULING

+  READER_WRITER_LOCKS

+  REALTIME_SIGNALS

+  REGEXP

+  SAVED_IDS

+  SELECT

+  SEMAPHORES

+  SHARED_MEMORY_OBJECTS

+  SHELL

+  SIGNALS

+  SINGLE_PROCESS

+  SPAWN

+  SPIN_LOCKS

+  SPORADIC_SERVER

+  SSIZE_MAX

+  STREAM_MAX

+  SYNCHRONIZED_IO

+  SYSTEM_DATABASE

+  SYSTEM_DATABASE_R

+  THREAD_ATTR_STACKADDR

+  THREAD_ATTR_STACKSIZE

+  THREAD_CPUTIME

+  THREAD_PRIO_INHERIT

+  THREAD_PRIO_PROTECT

+  THREAD_PRIORITY_SCHEDULING

+  THREAD_PROCESS_SHARED

+  THREADS

+  THREAD_SAFE_FUNCTIONS

+  THREAD_SPORADIC_SERVER

+  TIMEOUTS

+  TIMERS

+  TRACE

+  TRACE_EVENT_FILTER

+  TRACE_INHERIT

+  TRACE_LOG

+  TYPED_MEMORY_OBJECTS

+  TZNAME_MAX

+  USER_GROUPS

+  USER_GROUPS_R

+  VERSION

+# Additional variables not in getconf.

+  THREAD_DESTRUCTOR_ITERATIONS

+  IPV6

+  RAW_SOCKETS

+}

+

 SPEC XBS5 {

   ILP32_OFF32

   ILP32_OFFBIG

diff --git a/sysdeps/posix/sysconf.c b/sysdeps/posix/sysconf.c

index cf4f8010097e309a..1e9d4e099e94981c 100644

--- a/sysdeps/posix/sysconf.c

+++ b/sysdeps/posix/sysconf.c

@@ -31,6 +31,8 @@

 #include <sys/types.h>

 #include <regex.h>

+#include <posix-conf-vars.h>

+

 #define NEED_CHECK_SPEC \

   (!defined _XBS5_ILP32_OFF32 || !defined _XBS5_ILP32_OFFBIG \

@@ -95,112 +97,112 @@ __sysconf (name)

       return MAX (__tzname_max (), _POSIX_TZNAME_MAX);

     case _SC_JOB_CONTROL:

-#if _POSIX_JOB_CONTROL > 0

+#if CONF_IS_DEFINED_SET (_POSIX_JOB_CONTROL)

       return _POSIX_JOB_CONTROL;

 #else

       return -1;

 #endif

     case _SC_SAVED_IDS:

-#if _POSIX_SAVED_IDS > 0

+#if CONF_IS_DEFINED_SET (_POSIX_SAVED_IDS)

       return 1;

 #else

       return -1;

 #endif

     case _SC_REALTIME_SIGNALS:

-#if _POSIX_REALTIME_SIGNALS > 0

+#if CONF_IS_DEFINED_SET (_POSIX_REALTIME_SIGNALS)

       return _POSIX_REALTIME_SIGNALS;

 #else

       return -1;

 #endif

     case _SC_PRIORITY_SCHEDULING:

-#if _POSIX_PRIORITY_SCHEDULING > 0

+#if CONF_IS_DEFINED_SET (_POSIX_PRIORITY_SCHEDULING)

       return _POSIX_PRIORITY_SCHEDULING;

 #else

       return -1;

 #endif

     case _SC_TIMERS:

-#if _POSIX_TIMERS > 0

+#if CONF_IS_DEFINED_SET (_POSIX_TIMERS)

       return _POSIX_TIMERS;

 #else

       return -1;

 #endif

     case _SC_ASYNCHRONOUS_IO:

-#if _POSIX_ASYNCHRONOUS_IO > 0

+#if CONF_IS_DEFINED_SET (_POSIX_ASYNCHRONOUS_IO)

       return _POSIX_ASYNCHRONOUS_IO;

 #else

       return -1;

 #endif

     case _SC_PRIORITIZED_IO:

-#if _POSIX_PRIORITIZED_IO > 0

+#if CONF_IS_DEFINED_SET (_POSIX_PRIORITIZED_IO)

       return _POSIX_PRIORITIZED_IO;

 #else

       return -1;

 #endif

     case _SC_SYNCHRONIZED_IO:

-#if _POSIX_SYNCHRONIZED_IO > 0

+#if CONF_IS_DEFINED_SET (_POSIX_SYNCHRONIZED_IO)

       return _POSIX_SYNCHRONIZED_IO;

 #else

       return -1;

 #endif

     case _SC_FSYNC:

-#if _POSIX_FSYNC > 0

+#if CONF_IS_DEFINED_SET (_POSIX_FSYNC)

       return _POSIX_FSYNC;

 #else

       return -1;

 #endif

     case _SC_MAPPED_FILES:

-#if _POSIX_MAPPED_FILES > 0

+#if CONF_IS_DEFINED_SET (_POSIX_MAPPED_FILES)

       return _POSIX_MAPPED_FILES;

 #else

       return -1;

 #endif

     case _SC_MEMLOCK:

-#if _POSIX_MEMLOCK > 0

+#if CONF_IS_DEFINED_SET (_POSIX_MEMLOCK)

       return _POSIX_MEMLOCK;

 #else

       return -1;

 #endif

     case _SC_MEMLOCK_RANGE:

-#if _POSIX_MEMLOCK_RANGE > 0

+#if CONF_IS_DEFINED_SET (_POSIX_MEMLOCK_RANGE)

       return _POSIX_MEMLOCK_RANGE;

 #else

       return -1;

 #endif

     case _SC_MEMORY_PROTECTION:

-#if _POSIX_MEMORY_PROTECTION > 0

+#if CONF_IS_DEFINED_SET (_POSIX_MEMORY_PROTECTION)

       return _POSIX_MEMORY_PROTECTION;

 #else

       return -1;

 #endif

     case _SC_MESSAGE_PASSING:

-#if _POSIX_MESSAGE_PASSING > 0

+#if CONF_IS_DEFINED_SET (_POSIX_MESSAGE_PASSING)

       return _POSIX_MESSAGE_PASSING;

 #else

       return -1;

 #endif

     case _SC_SEMAPHORES:

-#if _POSIX_SEMAPHORES > 0

+#if CONF_IS_DEFINED_SET (_POSIX_SEMAPHORES)

       return _POSIX_SEMAPHORES;

 #else

       return -1;

 #endif

     case _SC_SHARED_MEMORY_OBJECTS:

-#if _POSIX_SHARED_MEMORY_OBJECTS > 0

+#if CONF_IS_DEFINED_SET (_POSIX_SHARED_MEMORY_OBJECTS)

       return _POSIX_SHARED_MEMORY_OBJECTS;

 #else

       return -1;

@@ -353,49 +355,49 @@ __sysconf (name)

 #endif

     case _SC_PII:

-#if _POSIX_PII > 0

+#if CONF_IS_DEFINED_SET (_POSIX_PII)

       return 1;

 #else

       return -1;

 #endif

     case _SC_PII_XTI:

-#if _POSIX_PII_XTI > 0

+#if CONF_IS_DEFINED_SET (_POSIX_PII_XTI)

       return 1;

 #else

       return -1;

 #endif

     case _SC_PII_SOCKET:

-#if _POSIX_PII_SOCKET > 0

+#if CONF_IS_DEFINED_SET (_POSIX_PII_SOCKET)

       return 1;

 #else

       return -1;

 #endif

     case _SC_PII_INTERNET:

-#if _POSIX_PII_INTERNET > 0

+#if CONF_IS_DEFINED_SET (_POSIX_PII_INTERNET)

       return 1;

 #else

       return -1;

 #endif

     case _SC_PII_OSI:

-#if _POSIX_PII_OSI > 0

+#if CONF_IS_DEFINED_SET (_POSIX_PII_OSI)

       return 1;

 #else

       return -1;

 #endif

     case _SC_POLL:

-#if _POSIX_POLL > 0

+#if CONF_IS_DEFINED_SET (_POSIX_POLL)

       return 1;

 #else

       return -1;

 #endif

     case _SC_SELECT:

-#if _POSIX_SELECT > 0

+#if CONF_IS_DEFINED_SET (_POSIX_SELECT)

       return 1;

 #else

       return -1;

@@ -410,35 +412,35 @@ __sysconf (name)

 #endif

     case _SC_PII_INTERNET_STREAM:

-#if _POSIX_PII_INTERNET_STREAM > 0

+#if CONF_IS_DEFINED_SET (_POSIX_PII_INTERNET_STREAM)

       return 1;

 #else

       return -1;

 #endif

     case _SC_PII_INTERNET_DGRAM:

-#if _POSIX_PII_INTERNET_DGRAM > 0

+#if CONF_IS_DEFINED_SET (_POSIX_PII_INTERNET_DGRAM)

       return 1;

 #else

       return -1;

 #endif

     case _SC_PII_OSI_COTS:

-#if _POSIX_PII_OSI_COTS > 0

+#if CONF_IS_DEFINED_SET (_POSIX_PII_OSI_COTS)

       return 1;

 #else

       return -1;

 #endif

     case _SC_PII_OSI_CLTS:

-#if _POSIX_PII_OSI_CLTS > 0

+#if CONF_IS_DEFINED_SET (_POSIX_PII_OSI_CLTS)

       return 1;

 #else

       return -1;

 #endif

     case _SC_PII_OSI_M:

-#if _POSIX_PII_OSI_M > 0

+#if CONF_IS_DEFINED_SET (_POSIX_PII_OSI_M)

       return 1;

 #else

       return -1;

@@ -519,14 +521,14 @@ __sysconf (name)

       /* POSIX 1003.1c (POSIX Threads).  */

     case _SC_THREADS:

-#if _POSIX_THREADS > 0

+#if CONF_IS_DEFINED_SET (_POSIX_THREADS)

       return _POSIX_THREADS;

 #else

       return -1;

 #endif

     case _SC_THREAD_SAFE_FUNCTIONS:

-#if _POSIX_THREAD_SAFE_FUNCTIONS > 0

+#if CONF_IS_DEFINED_SET (_POSIX_THREAD_SAFE_FUNCTIONS)

       return _POSIX_THREAD_SAFE_FUNCTIONS;

 #else

       return -1;

@@ -553,7 +555,7 @@ __sysconf (name)

 #endif

     case _SC_THREAD_DESTRUCTOR_ITERATIONS:

-#if _POSIX_THREAD_DESTRUCTOR_ITERATIONS > 0

+#if CONF_IS_DEFINED_SET (_POSIX_THREAD_DESTRUCTOR_ITERATIONS)

       return _POSIX_THREAD_DESTRUCTOR_ITERATIONS;

 #else

       return -1;

@@ -581,42 +583,42 @@ __sysconf (name)

 #endif

     case _SC_THREAD_ATTR_STACKADDR:

-#if _POSIX_THREAD_ATTR_STACKADDR > 0

+#if CONF_IS_DEFINED_SET (_POSIX_THREAD_ATTR_STACKADDR)

       return _POSIX_THREAD_ATTR_STACKADDR;

 #else

       return -1;

 #endif

     case _SC_THREAD_ATTR_STACKSIZE:

-#if _POSIX_THREAD_ATTR_STACKSIZE > 0

+#if CONF_IS_DEFINED_SET (_POSIX_THREAD_ATTR_STACKSIZE)

       return _POSIX_THREAD_ATTR_STACKSIZE;

 #else

       return -1;

 #endif

     case _SC_THREAD_PRIORITY_SCHEDULING:

-#if _POSIX_THREAD_PRIORITY_SCHEDULING > 0

+#if CONF_IS_DEFINED_SET (_POSIX_THREAD_PRIORITY_SCHEDULING)

       return _POSIX_THREAD_PRIORITY_SCHEDULING;

 #else

       return -1;

 #endif

     case _SC_THREAD_PRIO_INHERIT:

-#if _POSIX_THREAD_PRIO_INHERIT > 0

+#if CONF_IS_DEFINED_SET (_POSIX_THREAD_PRIO_INHERIT)

       return _POSIX_THREAD_PRIO_INHERIT;

 #else

       return -1;

 #endif

     case _SC_THREAD_PRIO_PROTECT:

-#if _POSIX_THREAD_PRIO_PROTECT > 0

+#if CONF_IS_DEFINED_SET (_POSIX_THREAD_PRIO_PROTECT)

       return _POSIX_THREAD_PRIO_PROTECT;

 #else

       return -1;

 #endif

     case _SC_THREAD_PROCESS_SHARED:

-#if _POSIX_THREAD_PROCESS_SHARED > 0

+#if CONF_IS_DEFINED_SET (_POSIX_THREAD_PROCESS_SHARED)

       return _POSIX_THREAD_PROCESS_SHARED;

 #else

       return -1;

@@ -833,152 +835,152 @@ __sysconf (name)

 #endif

     case _SC_ADVISORY_INFO:

-#if _POSIX_ADVISORY_INFO > 0

+#if CONF_IS_DEFINED_SET (_POSIX_ADVISORY_INFO)

       return _POSIX_ADVISORY_INFO;

 #else

       return -1;

 #endif

     case _SC_BARRIERS:

-#if _POSIX_BARRIERS > 0

+#if CONF_IS_DEFINED_SET (_POSIX_BARRIERS)

       return _POSIX_BARRIERS;

 #else

       return -1;

 #endif

     case _SC_BASE:

-#if _POSIX_BASE > 0

+#if CONF_IS_DEFINED_SET (_POSIX_BASE)

       return _POSIX_BASE;

 #else

       return -1;

 #endif

     case _SC_C_LANG_SUPPORT:

-#if _POSIX_C_LANG_SUPPORT > 0

+#if CONF_IS_DEFINED_SET (_POSIX_C_LANG_SUPPORT)

       return _POSIX_C_LANG_SUPPORT;

 #else

       return -1;

 #endif

     case _SC_C_LANG_SUPPORT_R:

-#if _POSIX_C_LANG_SUPPORT_R > 0

+#if CONF_IS_DEFINED_SET (_POSIX_C_LANG_SUPPORT_R)

       return _POSIX_C_LANG_SUPPORT_R;

 #else

       return -1;

 #endif

     case _SC_CLOCK_SELECTION:

-#if _POSIX_CLOCK_SELECTION > 0

+#if CONF_IS_DEFINED_SET (_POSIX_CLOCK_SELECTION)

       return _POSIX_CLOCK_SELECTION;

 #else

       return -1;

 #endif

     case _SC_CPUTIME:

-#if _POSIX_CPUTIME > 0

+#if CONF_IS_DEFINED_SET (_POSIX_CPUTIME)

       return _POSIX_CPUTIME;

 #else

       return -1;

 #endif

     case _SC_DEVICE_IO:

-#if _POSIX_DEVICE_IO > 0

+#if CONF_IS_DEFINED_SET (_POSIX_DEVICE_IO)

       return _POSIX_DEVICE_IO;

 #else

       return -1;

 #endif

     case _SC_DEVICE_SPECIFIC:

-#if _POSIX_DEVICE_SPECIFIC > 0

+#if CONF_IS_DEFINED_SET (_POSIX_DEVICE_SPECIFIC)

       return _POSIX_DEVICE_SPECIFIC;

 #else

       return -1;

 #endif

     case _SC_DEVICE_SPECIFIC_R:

-#if _POSIX_DEVICE_SPECIFIC_R > 0

+#if CONF_IS_DEFINED_SET (_POSIX_DEVICE_SPECIFIC_R)

       return _POSIX_DEVICE_SPECIFIC_R;

 #else

       return -1;

 #endif

     case _SC_FD_MGMT:

-#if _POSIX_FD_MGMT > 0

+#if CONF_IS_DEFINED_SET (_POSIX_FD_MGMT)

       return _POSIX_FD_MGMT;

 #else

       return -1;

 #endif

     case _SC_FIFO:

-#if _POSIX_FIFO > 0

+#if CONF_IS_DEFINED_SET (_POSIX_FIFO)

       return _POSIX_FIFO;

 #else

       return -1;

 #endif

     case _SC_PIPE:

-#if _POSIX_PIPE > 0

+#if CONF_IS_DEFINED_SET (_POSIX_PIPE)

       return _POSIX_PIPE;

 #else

       return -1;

 #endif

     case _SC_FILE_ATTRIBUTES:

-#if _POSIX_FILE_ATTRIBUTES > 0

+#if CONF_IS_DEFINED_SET (_POSIX_FILE_ATTRIBUTES)

       return _POSIX_FILE_ATTRIBUTES;

 #else

       return -1;

 #endif

     case _SC_FILE_LOCKING:

-#if _POSIX_FILE_LOCKING > 0

+#if CONF_IS_DEFINED_SET (_POSIX_FILE_LOCKING)

       return _POSIX_FILE_LOCKING;

 #else

       return -1;

 #endif

     case _SC_FILE_SYSTEM:

-#if _POSIX_FILE_SYSTEM > 0

+#if CONF_IS_DEFINED_SET (_POSIX_FILE_SYSTEM)

       return _POSIX_FILE_SYSTEM;

 #else

       return -1;

 #endif

     case _SC_MONOTONIC_CLOCK:

-#if _POSIX_MONOTONIC_CLOCK

+#if CONF_IS_DEFINED_SET (_POSIX_MONOTONIC_CLOCK)

       return _POSIX_MONOTONIC_CLOCK;

 #else

       return -1;

 #endif

     case _SC_MULTI_PROCESS:

-#if _POSIX_MULTI_PROCESS > 0

+#if CONF_IS_DEFINED_SET (_POSIX_MULTI_PROCESS)

       return _POSIX_MULTI_PROCESS;

 #else

       return -1;

 #endif

     case _SC_SINGLE_PROCESS:

-#if _POSIX_SINGLE_PROCESS > 0

+#if CONF_IS_DEFINED_SET (_POSIX_SINGLE_PROCESS)

       return _POSIX_SINGLE_PROCESS;

 #else

       return -1;

 #endif

     case _SC_NETWORKING:

-#if _POSIX_NETWORKING > 0

+#if CONF_IS_DEFINED_SET (_POSIX_NETWORKING)

       return _POSIX_NETWORKING;

 #else

       return -1;

 #endif

     case _SC_READER_WRITER_LOCKS:

-#if _POSIX_READER_WRITER_LOCKS > 0

+#if CONF_IS_DEFINED_SET (_POSIX_READER_WRITER_LOCKS)

       return _POSIX_READER_WRITER_LOCKS;

 #else

       return -1;

 #endif

     case _SC_SPIN_LOCKS:

-#if _POSIX_SPIN_LOCKS > 0

+#if CONF_IS_DEFINED_SET (_POSIX_SPIN_LOCKS)

       return _POSIX_SPIN_LOCKS;

 #else

       return -1;

 #endif

     case _SC_REGEXP:

-#if _POSIX_REGEXP > 0

+#if CONF_IS_DEFINED_SET (_POSIX_REGEXP)

       return _POSIX_REGEXP;

 #else

       return -1;

@@ -989,81 +991,81 @@ __sysconf (name)

       return -1;

     case _SC_SHELL:

-#if _POSIX_SHELL > 0

+#if CONF_IS_DEFINED_SET (_POSIX_SHELL)

       return _POSIX_SHELL;

 #else

       return -1;

 #endif

     case _SC_SIGNALS:

-#ifdef _POSIX_SIGNALS

+#if CONF_IS_DEFINED (_POSIX_SIGNALS)

       return _POSIX_SIGNALS;

 #else

       return -1;

 #endif

     case _SC_SPAWN:

-#if _POSIX_SPAWN > 0

+#if CONF_IS_DEFINED_SET (_POSIX_SPAWN)

       return _POSIX_SPAWN;

 #else

       return -1;

 #endif

     case _SC_SPORADIC_SERVER:

-#if _POSIX_SPORADIC_SERVER > 0

+#if CONF_IS_DEFINED_SET (_POSIX_SPORADIC_SERVER)

       return _POSIX_SPORADIC_SERVER;

 #else

       return -1;

 #endif

     case _SC_THREAD_SPORADIC_SERVER:

-#if _POSIX_THREAD_SPORADIC_SERVER > 0

+#if CONF_IS_DEFINED_SET (_POSIX_THREAD_SPORADIC_SERVER)

       return _POSIX_THREAD_SPORADIC_SERVER;

 #else

       return -1;

 #endif

     case _SC_SYSTEM_DATABASE:

-#if _POSIX_SYSTEM_DATABASE > 0

+#if CONF_IS_DEFINED_SET (_POSIX_SYSTEM_DATABASE)

       return _POSIX_SYSTEM_DATABASE;

 #else

       return -1;

 #endif

     case _SC_SYSTEM_DATABASE_R:

-#if _POSIX_SYSTEM_DATABASE_R > 0

+#if CONF_IS_DEFINED_SET (_POSIX_SYSTEM_DATABASE_R)

       return _POSIX_SYSTEM_DATABASE_R;

 #else

       return -1;

 #endif

     case _SC_THREAD_CPUTIME:

-#if _POSIX_THREAD_CPUTIME > 0

+#if CONF_IS_DEFINED_SET (_POSIX_THREAD_CPUTIME)

       return _POSIX_THREAD_CPUTIME;

 #else

       return -1;

 #endif

     case _SC_TIMEOUTS:

-#if _POSIX_TIMEOUTS > 0

+#if CONF_IS_DEFINED_SET (_POSIX_TIMEOUTS)

       return _POSIX_TIMEOUTS;

 #else

       return -1;

 #endif

     case _SC_TYPED_MEMORY_OBJECTS:

-#if _POSIX_TYPED_MEMORY_OBJECTS > 0

+#if CONF_IS_DEFINED_SET (_POSIX_TYPED_MEMORY_OBJECTS)

       return _POSIX_TYPED_MEMORY_OBJECTS;

 #else

       return -1;

 #endif

     case _SC_USER_GROUPS:

-#if _POSIX_USER_GROUPS > 0

+#if CONF_IS_DEFINED_SET (_POSIX_USER_GROUPS)

       return _POSIX_USER_GROUPS;

 #else

       return -1;

 #endif

     case _SC_USER_GROUPS_R:

-#if _POSIX_USER_GROUPS_R > 0

+#if CONF_IS_DEFINED_SET (_POSIX_USER_GROUPS_R)

       return _POSIX_USER_GROUPS_R;

 #else

       return -1;

@@ -1128,25 +1130,25 @@ __sysconf (name)

 #endif

     case _SC_TRACE:

-#if _POSIX_TRACE > 0

+#if CONF_IS_DEFINED_SET (_POSIX_TRACE)

       return _POSIX_TRACE;

 #else

       return -1;

 #endif

     case _SC_TRACE_EVENT_FILTER:

-#if _POSIX_TRACE_EVENT_FILTER > 0

+#if CONF_IS_DEFINED_SET (_POSIX_TRACE_EVENT_FILTER)

       return _POSIX_TRACE_EVENT_FILTER;

 #else

       return -1;

 #endif

     case _SC_TRACE_INHERIT:

-#if _POSIX_TRACE_INHERIT > 0

+#if CONF_IS_DEFINED_SET (_POSIX_TRACE_INHERIT)

       return _POSIX_TRACE_INHERIT;

 #else