1 files changed, 8 insertions, 0 deletions
diff --git a/lib/btowc.c b/lib/btowc.c
index caadbd7608..4defbdda72 100644
--- a/lib/btowc.c
+++ b/lib/btowc.c
@@ -22,6 +22,7 @@
 
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 
 wint_t
 btowc (int c)
@@ -32,7 +33,14 @@ btowc (int c)
       wchar_t wc;
 
       buf[0] = c;
+#if HAVE_MBRTOWC
+      mbstate_t state;
+      memset (&state, 0, sizeof (mbstate_t));
+      size_t ret = mbrtowc (&wc, buf, 1, &state);
+      if (!(ret == (size_t)(-1) || ret == (size_t)(-2)))
+#else
       if (mbtowc (&wc, buf, 1) >= 0)
+#endif
         return wc;
     }
   return WEOF;