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-rw-r--r--include/sys/socket.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/sys/socket.h b/include/sys/socket.h
index 83e1fcaa2..c8df3057f 100644
--- a/include/sys/socket.h
+++ b/include/sys/socket.h
@@ -281,7 +281,7 @@ libc_hidden_proto(accept4)
extern int shutdown (int __fd, int __how) __THROW;
-#if 0 /*def __USE_XOPEN2K*/
+#ifdef __USE_XOPEN2K
/* Determine wheter socket is at a out-of-band mark. */
extern int sockatmark (int __fd) __THROW;
#endif