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-rw-r--r--termios/termios.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/termios/termios.h b/termios/termios.h
index 0306d8fb8d..809cb2c208 100644
--- a/termios/termios.h
+++ b/termios/termios.h
@@ -27,9 +27,9 @@
#ifdef __USE_UNIX98
/* We need `pid_t'. */
# include <bits/types.h>
-# ifndef pid_t
+# ifndef __pid_t_defined
typedef __pid_t pid_t;
-# define pid_t pid_t
+# define __pid_t_defined
# endif
#endif