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-rw-r--r--include/stdio.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/stdio.h b/include/stdio.h
index e4ae35333d..4fe3bb03eb 100644
--- a/include/stdio.h
+++ b/include/stdio.h
@@ -66,7 +66,9 @@ extern void __funlockfile (FILE *__stream);
 extern int __ftrylockfile (FILE *__stream);
 
 extern int __getc_unlocked (FILE *__fp);
+#  ifdef USE_IN_LIBIO
 extern wint_t __getwc_unlocked (FILE *__fp);
+#  endif
 
 
 # endif