1 files changed, 3 insertions, 4 deletions
diff --git a/libio/fileops.c b/libio/fileops.c
index 79ad15351f..c9c5cbcc3c 100644
--- a/libio/fileops.c
+++ b/libio/fileops.c
@@ -468,11 +468,10 @@ int
 _IO_new_file_underflow (FILE *fp)
 {
   ssize_t count;
-#if 0
-  /* SysV does not make this test; take it out for compatibility */
+
+  /* C99 requires EOF to be "sticky".  */
   if (fp->_flags & _IO_EOF_SEEN)
-    return (EOF);
-#endif
+    return EOF;
 
   if (fp->_flags & _IO_NO_READS)
     {