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-rw-r--r--src/tests/threads/profread.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/tests/threads/profread.c b/src/tests/threads/profread.c
index be28ba4..69bdb05 100644
--- a/src/tests/threads/profread.c
+++ b/src/tests/threads/profread.c
@@ -59,7 +59,7 @@ static int do_pause;
static void usage (void) __attribute__((noreturn));
static void
-usage ()
+usage (void)
{
fprintf (stderr, "usage: %s [ options ]\n", prog);
fprintf (stderr, "options:\n");