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-rw-r--r--libc/sysdeps/linux/common/fdatasync.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libc/sysdeps/linux/common/fdatasync.c b/libc/sysdeps/linux/common/fdatasync.c
index 07433bc77..a40f3e00c 100644
--- a/libc/sysdeps/linux/common/fdatasync.c
+++ b/libc/sysdeps/linux/common/fdatasync.c
@@ -10,7 +10,7 @@
#include <sys/syscall.h>
#include <unistd.h>
-#if defined __NR_osf_fdatasync
+#if !defined __NR_fdatasync && defined __NR_osf_fdatasync
# define __NR_fdatasync __NR_osf_fdatasync
#endif