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-rw-r--r--libobjc/thr.c5
1 files changed, 0 insertions, 5 deletions
diff --git a/libobjc/thr.c b/libobjc/thr.c
index f45a752afb3..4b16d4b059c 100644
--- a/libobjc/thr.c
+++ b/libobjc/thr.c
@@ -25,11 +25,6 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
#include "objc-private/common.h"
#include "objc-private/error.h"
#define _LIBOBJC
-/* The line below is needed for declarations of functions such as
- pthread_mutexattr_settype, without which gthr-posix.h may fail to
- compile within libobjc. While we only need XPG5 for this, Solaris
- requires XPG6 for C99 and later. */
-#define _XOPEN_SOURCE 600
#include "config.h"
#include "tconfig.h"
#include "coretypes.h"