Index: ext/libicpf/src/conv.h
===================================================================
diff -u -N -re17c80d36eaa0430313e7d1058aa7a301d1510af -r338a33bbdb8c82416f0351408eea3243520784e5
--- ext/libicpf/src/conv.h	(.../conv.h)	(revision e17c80d36eaa0430313e7d1058aa7a301d1510af)
+++ ext/libicpf/src/conv.h	(.../conv.h)	(revision 338a33bbdb8c82416f0351408eea3243520784e5)
@@ -25,7 +25,7 @@
 
 BEGIN_ICPF_NAMESPACE
 
-LIBICPF_API void bin2hex(uchar_t *pbyIn, uint_t tInCount, char_t *pszOut);
+LIBICPF_API void bin2hex(const uchar_t *pbyIn, uint_t tInCount, char_t *pszOut);
 LIBICPF_API bool hex2bin(const char_t* pszIn, uint_t tInCount, uchar_t* pbyOut);
 
 END_ICPF_NAMESPACE