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-rw-r--r--newlib/libc/include/reent.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/newlib/libc/include/reent.h b/newlib/libc/include/reent.h
index 639789e71..4f3d6a9bf 100644
--- a/newlib/libc/include/reent.h
+++ b/newlib/libc/include/reent.h
@@ -67,6 +67,7 @@ extern int _fcntl_r _PARAMS ((struct _reent *, int, int, int));
extern int _fork_r _PARAMS ((struct _reent *));
extern int _fstat_r _PARAMS ((struct _reent *, int, struct stat *));
extern int _getpid_r _PARAMS ((struct _reent *));
+extern int _isatty_r _PARAMS ((struct _reent *, int));
extern int _kill_r _PARAMS ((struct _reent *, int, int));
extern int _link_r _PARAMS ((struct _reent *, const char *, const char *));
extern _off_t _lseek_r _PARAMS ((struct _reent *, int, _off_t, int));