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-rw-r--r--src/internal/futex.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/internal/futex.h b/src/internal/futex.h
index d7bf2b7d..cf4c7951 100644
--- a/src/internal/futex.h
+++ b/src/internal/futex.h
@@ -12,6 +12,8 @@
 #define FUTEX_TRYLOCK_PI	8
 #define FUTEX_WAIT_BITSET	9
 
+#define FUTEX_PRIVATE 128
+
 #define FUTEX_CLOCK_REALTIME 256
 
 int __futex(volatile int *, int, int, void *);