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-rw-r--r--io/fcntl.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/io/fcntl.c b/io/fcntl.c
index 996a0d5863..8bfda94a77 100644
--- a/io/fcntl.c
+++ b/io/fcntl.c
@@ -20,7 +20,7 @@
 
 /* Perform file control operations on FD.  */
 int
-__fcntl (int fd, int cmd)
+__fcntl (int fd, int cmd, ...)
 {
   if (fd < 0)
     {