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-rw-r--r--posix/fork.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/posix/fork.c b/posix/fork.c
index 01b5279199..4946a40b8b 100644
--- a/posix/fork.c
+++ b/posix/fork.c
@@ -23,7 +23,7 @@
    Return -1 for errors, 0 to the new process,
    and the process ID of the new process to the old process.  */
 int
-__fork ()
+__fork (void)
 {
   __set_errno (ENOSYS);
   return -1;