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-rw-r--r--include/wctype.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/wctype.h b/include/wctype.h
index 9382f32ea8..f52f0a3f30 100644
--- a/include/wctype.h
+++ b/include/wctype.h
@@ -17,6 +17,7 @@ typedef unsigned int wint_t;
    these as macros and thus we couldn't add libc_hidden_proto.  */
 
 extern int iswalpha (wint_t __wc);
+extern int iswalnum (wint_t __wc);
 extern int iswdigit (wint_t __wc);
 extern int iswlower (wint_t __wc);
 extern int iswspace (wint_t __wc);
@@ -25,6 +26,7 @@ extern wint_t towlower (wint_t __wc);
 extern wint_t towupper (wint_t __wc);
 
 libc_hidden_proto (iswalpha)
+libc_hidden_proto (iswalnum)
 libc_hidden_proto (iswdigit)
 libc_hidden_proto (iswlower)
 libc_hidden_proto (iswspace)