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-rw-r--r--newlib/libc/posix/isatty.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/newlib/libc/posix/isatty.c b/newlib/libc/posix/isatty.c
index 3c64647a9..2732ca2a0 100644
--- a/newlib/libc/posix/isatty.c
+++ b/newlib/libc/posix/isatty.c
@@ -5,7 +5,7 @@
#include <sys/stat.h>
int
-isatty (int fd)
+_DEFUN(isatty, (fd), int fd)
{
struct stat buf;