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-rw-r--r--include/termios.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/termios.h b/include/termios.h
index e10a7e3af3..e2b369feb1 100644
--- a/include/termios.h
+++ b/include/termios.h
@@ -3,4 +3,7 @@
 
 /* Now define the internal interfaces.  */
 extern int __tcgetattr (int __fd, struct termios *__termios_p);
+
+extern int __libc_tcdrain (int __fd);
+
 #endif