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-rw-r--r--libio/getchar_u.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libio/getchar_u.c b/libio/getchar_u.c
index 9f22aa5299..c01d957154 100644
--- a/libio/getchar_u.c
+++ b/libio/getchar_u.c
@@ -30,7 +30,7 @@
 #undef getchar_unlocked
 
 int
-getchar_unlocked ()
+getchar_unlocked (void)
 {
   return _IO_getc_unlocked (_IO_stdin);
 }