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-rw-r--r--include/unistd.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/unistd.h b/include/unistd.h
index 5bc7f798..cfd91279 100644
--- a/include/unistd.h
+++ b/include/unistd.h
@@ -427,6 +427,7 @@ pid_t gettid(void);
#define _SC_THREAD_ROBUST_PRIO_PROTECT 248
#define _SC_MINSIGSTKSZ 249
#define _SC_SIGSTKSZ 250
+#define _SC_XOPEN_UUCP 251
#define _CS_PATH 0
#define _CS_POSIX_V6_WIDTH_RESTRICTED_ENVS 1