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-rw-r--r--libc/include/llvm-libc-macros/pthread-macros.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/libc/include/llvm-libc-macros/pthread-macros.h b/libc/include/llvm-libc-macros/pthread-macros.h
index fcc6ef9..ce467b7 100644
--- a/libc/include/llvm-libc-macros/pthread-macros.h
+++ b/libc/include/llvm-libc-macros/pthread-macros.h
@@ -22,6 +22,8 @@
#define PTHREAD_MUTEX_STALLED 0
#define PTHREAD_MUTEX_ROBUST 1
+#define PTHREAD_BARRIER_SERIAL_THREAD -1
+
#define PTHREAD_ONCE_INIT {0}
#define PTHREAD_PROCESS_PRIVATE 0