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-rw-r--r--include/wctype.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/wctype.h b/include/wctype.h
index 2acaabd5c4..a2d5e18f31 100644
--- a/include/wctype.h
+++ b/include/wctype.h
@@ -67,6 +67,7 @@ extern __typeof (iswxdigit_l) __iswxdigit_l;
 extern __typeof (towlower_l) __towlower_l;
 extern __typeof (towupper_l) __towupper_l;
 
+libc_hidden_proto (__towctrans)
 libc_hidden_proto (__iswctype)
 libc_hidden_proto (__iswalnum_l)
 libc_hidden_proto (__iswalpha_l)