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-rw-r--r--libio/filedoalloc.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libio/filedoalloc.c b/libio/filedoalloc.c
index c2e849a736..3621e43073 100644
--- a/libio/filedoalloc.c
+++ b/libio/filedoalloc.c
@@ -95,7 +95,7 @@ _IO_file_doallocate (fp)
 	  /* Possibly a tty.  */
 	  if (
 #ifdef DEV_TTY_P
-	      DEV_TTY_P (st.st_rdev) ||
+	      DEV_TTY_P (&st) ||
 #endif
 	      isatty (fp->_fileno))
 	    fp->_flags |= _IO_LINE_BUF;